/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=DEEPEST --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/array-lopstr16/break-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:47:32,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:47:32,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:47:32,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:47:32,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:47:32,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:47:32,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:47:32,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:47:32,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:47:32,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:47:32,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:47:32,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:47:32,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:47:32,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:47:32,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:47:32,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:47:32,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:47:32,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:47:32,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:47:32,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:47:32,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:47:32,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:47:32,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:47:32,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:47:32,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:47:32,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:47:32,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:47:32,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:47:32,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:47:32,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:47:32,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:47:32,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:47:32,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:47:32,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:47:32,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:47:32,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:47:32,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:47:32,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:47:32,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:47:32,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:47:32,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:47:32,187 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 [2020-10-27 14:47:32,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:47:32,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:47:32,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:47:32,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:47:32,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:47:32,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:47:32,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:47:32,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:47:32,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:47:32,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:47:32,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:47:32,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:47:32,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:47:32,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:47:32,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:47:32,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:47:32,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:47:32,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:47:32,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:47:32,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:47:32,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:47:32,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:47:32,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:47:32,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:47:32,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:47:32,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:47:32,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:47:32,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:47:32,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:47:32,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:47:32,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:47:32,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:47:32,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:47:32,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:47:32,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:47:32,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/break-1.i [2020-10-27 14:47:32,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fc5f2cb/88810d8895164d4faf040aa90216af53/FLAG40177acdc [2020-10-27 14:47:33,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:47:33,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/break-1.i [2020-10-27 14:47:33,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fc5f2cb/88810d8895164d4faf040aa90216af53/FLAG40177acdc [2020-10-27 14:47:33,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fc5f2cb/88810d8895164d4faf040aa90216af53 [2020-10-27 14:47:33,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:47:33,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:47:33,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:47:33,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:47:33,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:47:33,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:47:33" (1/1) ... [2020-10-27 14:47:33,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e21d1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:33, skipping insertion in model container [2020-10-27 14:47:33,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:47:33" (1/1) ... [2020-10-27 14:47:33,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:47:33,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:47:34,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:47:43,779 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:47:43,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:47:43,824 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:47:43,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43 WrapperNode [2020-10-27 14:47:43,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:47:43,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:47:43,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:47:43,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:47:43,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (1/1) ... [2020-10-27 14:47:43,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:47:43,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:47:43,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:47:43,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:47:43,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (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 [2020-10-27 14:47:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:47:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:47:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:47:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:47:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:47:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:47:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:47:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:47:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:47:44,376 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:47:44,376 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:47:44,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:47:44 BoogieIcfgContainer [2020-10-27 14:47:44,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:47:44,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:47:44,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:47:44,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:47:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:47:33" (1/3) ... [2020-10-27 14:47:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:47:44, skipping insertion in model container [2020-10-27 14:47:44,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:43" (2/3) ... [2020-10-27 14:47:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:47:44, skipping insertion in model container [2020-10-27 14:47:44,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:47:44" (3/3) ... [2020-10-27 14:47:44,387 INFO L111 eAbstractionObserver]: Analyzing ICFG break-1.i [2020-10-27 14:47:44,401 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:47:44,407 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:47:44,421 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:47:44,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:47:44,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:47:44,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:47:44,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:47:44,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:47:44,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:47:44,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:47:44,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:47:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 14:47:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:47:44,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:44,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:44,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1575655028, now seen corresponding path program 1 times [2020-10-27 14:47:44,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:44,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263621352] [2020-10-27 14:47:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:47:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 14:47:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:47:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 14:47:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:45,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 14:47:45,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:47:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263621352] [2020-10-27 14:47:45,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:47:45,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:47:45,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639930210] [2020-10-27 14:47:45,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:47:45,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:45,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:47:45,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:47:45,137 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-27 14:47:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:45,261 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2020-10-27 14:47:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:47:45,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-27 14:47:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:45,273 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:47:45,273 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:47:45,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:47:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:47:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-27 14:47:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 14:47:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-27 14:47:45,328 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-27 14:47:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:45,328 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-27 14:47:45,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:47:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-27 14:47:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:47:45,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:45,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:45,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:47:45,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash 585993527, now seen corresponding path program 1 times [2020-10-27 14:47:45,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:45,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551299527] [2020-10-27 14:47:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:45,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:47:45,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:47:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:47:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:47:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:47:45,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:47:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:47:45,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551299527] [2020-10-27 14:47:45,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:47:45,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:47:45,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332466155] [2020-10-27 14:47:45,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:47:45,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:45,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:47:45,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:47:45,629 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-27 14:47:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:45,804 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-27 14:47:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:47:45,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 14:47:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:45,806 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:47:45,806 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:47:45,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:47:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:47:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 24. [2020-10-27 14:47:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:47:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-27 14:47:45,818 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2020-10-27 14:47:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:45,818 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-27 14:47:45,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:47:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-27 14:47:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:47:45,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:45,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:45,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:47:45,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash 836905597, now seen corresponding path program 1 times [2020-10-27 14:47:45,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:45,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118846310] [2020-10-27 14:47:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:45,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:47:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 14:47:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:47:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:47:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:47:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:47:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:47:45,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118846310] [2020-10-27 14:47:45,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:47:45,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:47:45,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505418671] [2020-10-27 14:47:45,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:47:45,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:45,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:47:45,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:47:45,989 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-27 14:47:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:46,105 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-27 14:47:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:47:46,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:47:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:46,107 INFO L225 Difference]: With dead ends: 46 [2020-10-27 14:47:46,107 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 14:47:46,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:47:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 14:47:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-27 14:47:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:47:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-27 14:47:46,115 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-10-27 14:47:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:46,115 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-27 14:47:46,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:47:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-27 14:47:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:47:46,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:46,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:46,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:47:46,117 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1977759324, now seen corresponding path program 1 times [2020-10-27 14:47:46,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:46,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831311111] [2020-10-27 14:47:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:46,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:47:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-27 14:47:46,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:47:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:47:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:47:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:46,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:47:46,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:47:46,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831311111] [2020-10-27 14:47:46,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:46,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:47:46,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381392191] [2020-10-27 14:47:46,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:47:46,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:46,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:47:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:47:46,803 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-10-27 14:47:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:46,949 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-27 14:47:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:47:46,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-27 14:47:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:46,951 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:47:46,951 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 14:47:46,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:47:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 14:47:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-10-27 14:47:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:47:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-27 14:47:46,959 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-27 14:47:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:46,959 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-27 14:47:46,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:47:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-27 14:47:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:47:46,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:46,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:46,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:47:46,961 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:46,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1335518697, now seen corresponding path program 2 times [2020-10-27 14:47:46,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:46,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005790720] [2020-10-27 14:47:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:47:47,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-27 14:47:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:47:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:47:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:47:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:47:47,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005790720] [2020-10-27 14:47:47,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:47,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:47:47,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371120412] [2020-10-27 14:47:47,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:47:47,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:47,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:47:47,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:47:47,860 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-10-27 14:47:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:48,167 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-27 14:47:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:47:48,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-27 14:47:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:48,169 INFO L225 Difference]: With dead ends: 40 [2020-10-27 14:47:48,169 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:47:48,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:47:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:47:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:47:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:47:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-27 14:47:48,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 22 [2020-10-27 14:47:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:48,178 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-27 14:47:48,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:47:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-27 14:47:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:47:48,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:48,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:48,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:47:48,180 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1214224133, now seen corresponding path program 1 times [2020-10-27 14:47:48,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:48,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483586725] [2020-10-27 14:47:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:47:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 14:47:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:49,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:47:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:47:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:49,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:47:49,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:47:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:47:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:47:49,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483586725] [2020-10-27 14:47:49,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:49,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:47:49,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941145866] [2020-10-27 14:47:49,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:47:49,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:47:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:47:49,883 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2020-10-27 14:47:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:50,483 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-10-27 14:47:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:47:50,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-27 14:47:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:50,485 INFO L225 Difference]: With dead ends: 51 [2020-10-27 14:47:50,485 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:47:50,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:47:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:47:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-27 14:47:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:47:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-27 14:47:50,495 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31 [2020-10-27 14:47:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:50,495 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-27 14:47:50,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:47:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-27 14:47:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:47:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:50,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:50,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:47:50,498 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2639319, now seen corresponding path program 2 times [2020-10-27 14:47:50,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:50,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479507933] [2020-10-27 14:47:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:47:55,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:47:55,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:47:55,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:47:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:47:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:47:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:47:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:47:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:47:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:47:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:47:55,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:47:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:47:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:47:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:47:55,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479507933] [2020-10-27 14:47:55,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:55,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:47:55,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965122558] [2020-10-27 14:47:55,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:47:55,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:55,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:47:55,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:47:55,665 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-10-27 14:47:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:55,860 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-10-27 14:47:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:47:55,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-27 14:47:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:55,862 INFO L225 Difference]: With dead ends: 85 [2020-10-27 14:47:55,862 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:47:55,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:47:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:47:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2020-10-27 14:47:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 14:47:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-27 14:47:55,872 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2020-10-27 14:47:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:55,873 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-27 14:47:55,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:47:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-27 14:47:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:47:55,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:55,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:55,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:47:55,875 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:55,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:55,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1911900996, now seen corresponding path program 3 times [2020-10-27 14:47:55,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:55,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988218922] [2020-10-27 14:47:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:48:00,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:48:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:48:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:48:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:48:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:01,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:48:01,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:01,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:48:01,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:48:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:01,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:48:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:48:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:48:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:48:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:48:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:01,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:48:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:48:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:48:01,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988218922] [2020-10-27 14:48:01,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:01,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:48:01,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560588611] [2020-10-27 14:48:01,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:48:01,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:48:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:48:01,263 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 13 states. [2020-10-27 14:48:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:02,002 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-10-27 14:48:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:48:02,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-27 14:48:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:02,004 INFO L225 Difference]: With dead ends: 63 [2020-10-27 14:48:02,004 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:48:02,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:48:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:48:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-27 14:48:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 14:48:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-10-27 14:48:02,022 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 43 [2020-10-27 14:48:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:02,023 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-10-27 14:48:02,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:48:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-10-27 14:48:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:48:02,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:02,027 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:02,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:48:02,027 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:02,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1882199944, now seen corresponding path program 4 times [2020-10-27 14:48:02,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:02,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528483381] [2020-10-27 14:48:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:07,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:48:07,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:48:07,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:48:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:48:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:48:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:48:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:48:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:07,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:07,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:07,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:48:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:07,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:07,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:48:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:48:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:48:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:48:07,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528483381] [2020-10-27 14:48:07,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:07,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:48:07,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690216349] [2020-10-27 14:48:07,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:48:07,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:48:07,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:48:07,232 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 7 states. [2020-10-27 14:48:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:07,468 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2020-10-27 14:48:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:48:07,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:48:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:07,470 INFO L225 Difference]: With dead ends: 106 [2020-10-27 14:48:07,470 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:48:07,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:48:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:48:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-27 14:48:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:48:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-27 14:48:07,491 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-10-27 14:48:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:07,491 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-27 14:48:07,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:48:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-27 14:48:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:48:07,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:07,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:07,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:48:07,494 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:07,495 INFO L82 PathProgramCache]: Analyzing trace with hash -754503067, now seen corresponding path program 5 times [2020-10-27 14:48:07,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:07,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016934500] [2020-10-27 14:48:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:48:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:48:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:12,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:12,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:48:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:48:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:12,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:48:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:12,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:12,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:12,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:48:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:48:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:48:12,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016934500] [2020-10-27 14:48:12,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:12,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:48:12,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774211922] [2020-10-27 14:48:12,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:48:12,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:12,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:48:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:48:12,764 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 8 states. [2020-10-27 14:48:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:12,986 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-10-27 14:48:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:48:12,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-27 14:48:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:12,989 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:48:12,989 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 14:48:12,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:48:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 14:48:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-27 14:48:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:48:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-27 14:48:12,999 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2020-10-27 14:48:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:12,999 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-27 14:48:12,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:48:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-27 14:48:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:48:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:13,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:13,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:48:13,001 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:13,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:13,001 INFO L82 PathProgramCache]: Analyzing trace with hash -771029672, now seen corresponding path program 6 times [2020-10-27 14:48:13,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:13,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16514557] [2020-10-27 14:48:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:48:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:48:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:18,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:48:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:48:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:18,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:18,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:18,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:48:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:48:18,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16514557] [2020-10-27 14:48:18,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:18,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:48:18,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708728158] [2020-10-27 14:48:18,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:48:18,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:18,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:48:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:48:18,215 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 9 states. [2020-10-27 14:48:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:18,557 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-27 14:48:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:48:18,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-27 14:48:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:18,559 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:48:18,560 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:48:18,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:48:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:48:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-10-27 14:48:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:48:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-10-27 14:48:18,569 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58 [2020-10-27 14:48:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:18,570 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-10-27 14:48:18,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:48:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-10-27 14:48:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:48:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:18,571 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:18,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:48:18,572 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 806119813, now seen corresponding path program 7 times [2020-10-27 14:48:18,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:18,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651110277] [2020-10-27 14:48:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:18,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:19,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:23,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:48:23,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:48:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 14:48:23,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:48:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:23,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:48:23,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:23,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:48:23,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:48:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:23,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:23,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:23,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:48:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:23,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:23,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:48:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:48:23,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651110277] [2020-10-27 14:48:23,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:23,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:48:23,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848760118] [2020-10-27 14:48:23,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:48:23,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:23,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:48:23,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:48:23,816 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 10 states. [2020-10-27 14:48:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:24,119 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2020-10-27 14:48:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:48:24,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-27 14:48:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:24,123 INFO L225 Difference]: With dead ends: 130 [2020-10-27 14:48:24,123 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:48:24,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:48:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:48:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2020-10-27 14:48:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:48:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-27 14:48:24,144 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2020-10-27 14:48:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:24,144 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-27 14:48:24,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:48:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-27 14:48:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:48:24,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:24,146 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:24,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:48:24,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1275790792, now seen corresponding path program 8 times [2020-10-27 14:48:24,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:24,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414907117] [2020-10-27 14:48:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:48:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:48:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:48:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:29,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:29,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:48:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:29,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:48:29,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414907117] [2020-10-27 14:48:29,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:29,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:48:29,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529610454] [2020-10-27 14:48:29,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:48:29,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:29,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:48:29,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:48:29,363 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 11 states. [2020-10-27 14:48:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:29,659 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2020-10-27 14:48:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:48:29,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-27 14:48:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:29,661 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:48:29,661 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:48:29,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:48:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:48:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-10-27 14:48:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:48:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-27 14:48:29,671 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2020-10-27 14:48:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:29,671 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-27 14:48:29,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:48:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-27 14:48:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:48:29,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:29,672 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:29,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:48:29,672 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash 148097189, now seen corresponding path program 9 times [2020-10-27 14:48:29,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:29,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037348473] [2020-10-27 14:48:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:48:34,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:48:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:48:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:48:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 14:48:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:35,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:35,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:35,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:48:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:48:35,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:48:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:48:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:48:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:35,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:35,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:35,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:48:35,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:48:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:48:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:48:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 90 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-27 14:48:35,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037348473] [2020-10-27 14:48:35,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:35,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:48:35,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145151109] [2020-10-27 14:48:35,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:48:35,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:35,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:48:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:48:35,071 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 15 states. [2020-10-27 14:48:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:36,131 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-27 14:48:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:48:36,131 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-27 14:48:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:36,132 INFO L225 Difference]: With dead ends: 85 [2020-10-27 14:48:36,132 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:48:36,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:48:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:48:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-27 14:48:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:48:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-27 14:48:36,144 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 67 [2020-10-27 14:48:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:36,144 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-27 14:48:36,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:48:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-27 14:48:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:48:36,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:36,145 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:36,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:48:36,146 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1052895287, now seen corresponding path program 10 times [2020-10-27 14:48:36,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:36,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023864632] [2020-10-27 14:48:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:48:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:41,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:41,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:41,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:48:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:48:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:48:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:48:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:41,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:41,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 92 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:48:41,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023864632] [2020-10-27 14:48:41,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:41,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:48:41,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434495060] [2020-10-27 14:48:41,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:48:41,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:48:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:48:41,349 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 12 states. [2020-10-27 14:48:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:41,805 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2020-10-27 14:48:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:48:41,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-10-27 14:48:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:41,808 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:48:41,808 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:48:41,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:48:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:48:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2020-10-27 14:48:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:48:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-27 14:48:41,836 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2020-10-27 14:48:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:41,836 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-27 14:48:41,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:48:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-27 14:48:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:48:41,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:41,840 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:41,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:48:41,841 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash 866482980, now seen corresponding path program 11 times [2020-10-27 14:48:41,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:41,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107036567] [2020-10-27 14:48:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:46,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:48:46,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:48:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:48:46,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:48:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:48:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:48:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:48:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:48:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:48:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:48:47,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107036567] [2020-10-27 14:48:47,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:47,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:48:47,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145640762] [2020-10-27 14:48:47,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:48:47,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:48:47,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:48:47,088 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 13 states. [2020-10-27 14:48:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:47,439 INFO L93 Difference]: Finished difference Result 167 states and 175 transitions. [2020-10-27 14:48:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:48:47,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-27 14:48:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:47,441 INFO L225 Difference]: With dead ends: 167 [2020-10-27 14:48:47,441 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 14:48:47,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:48:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 14:48:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2020-10-27 14:48:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 14:48:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-10-27 14:48:47,460 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2020-10-27 14:48:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:47,461 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-10-27 14:48:47,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:48:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-10-27 14:48:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:48:47,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:47,462 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:47,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:48:47,463 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:47,464 INFO L82 PathProgramCache]: Analyzing trace with hash 850158871, now seen corresponding path program 12 times [2020-10-27 14:48:47,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:47,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455515693] [2020-10-27 14:48:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:47,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:48:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:48:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:48:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:48:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:48:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:48:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:48:52,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455515693] [2020-10-27 14:48:52,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:52,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:48:52,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431956639] [2020-10-27 14:48:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:48:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:48:52,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:48:52,708 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 14 states. [2020-10-27 14:48:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:53,094 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2020-10-27 14:48:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:48:53,095 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-27 14:48:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:53,096 INFO L225 Difference]: With dead ends: 175 [2020-10-27 14:48:53,096 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:48:53,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:48:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:48:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 88. [2020-10-27 14:48:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:48:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-27 14:48:53,109 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2020-10-27 14:48:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:53,109 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-27 14:48:53,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:48:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-27 14:48:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:48:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:53,110 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:53,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:48:53,111 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash -130067900, now seen corresponding path program 13 times [2020-10-27 14:48:53,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:53,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986340445] [2020-10-27 14:48:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5228 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:48:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:48:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:48:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:48:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:48:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:48:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:58,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:48:58,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986340445] [2020-10-27 14:48:58,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:58,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:48:58,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083299159] [2020-10-27 14:48:58,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:48:58,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:58,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:48:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:48:58,619 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 15 states. [2020-10-27 14:48:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:59,095 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-27 14:48:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:48:59,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-27 14:48:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:59,097 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:48:59,097 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 14:48:59,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:48:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 14:48:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2020-10-27 14:48:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 14:48:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-27 14:48:59,116 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2020-10-27 14:48:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:59,117 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-27 14:48:59,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:48:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-27 14:48:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:48:59,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:59,118 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:59,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:48:59,118 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash -583157257, now seen corresponding path program 14 times [2020-10-27 14:48:59,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:59,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794786467] [2020-10-27 14:48:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 14:49:04,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:49:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:49:04,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:49:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:49:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:49:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:49:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:49:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:04,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:49:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 210 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:04,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794786467] [2020-10-27 14:49:04,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:04,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:49:04,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255352305] [2020-10-27 14:49:04,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:49:04,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:49:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:49:04,415 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 16 states. [2020-10-27 14:49:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:04,930 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2020-10-27 14:49:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:49:04,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-27 14:49:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:04,933 INFO L225 Difference]: With dead ends: 191 [2020-10-27 14:49:04,933 INFO L226 Difference]: Without dead ends: 143 [2020-10-27 14:49:04,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:49:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-27 14:49:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 94. [2020-10-27 14:49:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:49:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-10-27 14:49:04,948 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2020-10-27 14:49:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:04,948 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-10-27 14:49:04,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:49:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-10-27 14:49:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:49:04,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:04,949 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:04,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:49:04,950 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash 514019684, now seen corresponding path program 15 times [2020-10-27 14:49:04,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:04,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474396347] [2020-10-27 14:49:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:49:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:49:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:10,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:49:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:49:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:49:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:49:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:10,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:10,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 8 proven. 247 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:10,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474396347] [2020-10-27 14:49:10,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:10,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:49:10,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901035800] [2020-10-27 14:49:10,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:49:10,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:10,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:49:10,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:49:10,252 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 17 states. [2020-10-27 14:49:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:10,736 INFO L93 Difference]: Finished difference Result 199 states and 211 transitions. [2020-10-27 14:49:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:49:10,737 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-27 14:49:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:10,739 INFO L225 Difference]: With dead ends: 199 [2020-10-27 14:49:10,740 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:49:10,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:49:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:49:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 97. [2020-10-27 14:49:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 14:49:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2020-10-27 14:49:10,755 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 91 [2020-10-27 14:49:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:10,755 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2020-10-27 14:49:10,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:49:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2020-10-27 14:49:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:49:10,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:10,757 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:10,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:49:10,757 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1811146455, now seen corresponding path program 16 times [2020-10-27 14:49:10,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:10,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949679041] [2020-10-27 14:49:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:15,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:15,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 14:49:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:49:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:49:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:49:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:49:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:49:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:16,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:49:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:49:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:49:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:16,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:16,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 8 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:16,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949679041] [2020-10-27 14:49:16,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:16,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:49:16,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327763009] [2020-10-27 14:49:16,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:49:16,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:49:16,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:49:16,099 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 18 states. [2020-10-27 14:49:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:16,633 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-10-27 14:49:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:49:16,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-27 14:49:16,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:16,636 INFO L225 Difference]: With dead ends: 207 [2020-10-27 14:49:16,636 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:49:16,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:49:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:49:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 100. [2020-10-27 14:49:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:49:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2020-10-27 14:49:16,655 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94 [2020-10-27 14:49:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:16,655 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2020-10-27 14:49:16,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:49:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2020-10-27 14:49:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:49:16,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:16,657 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:16,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:49:16,657 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:16,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1600948092, now seen corresponding path program 17 times [2020-10-27 14:49:16,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:16,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329449029] [2020-10-27 14:49:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:49:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:22,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:22,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:22,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:22,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:49:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:49:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:49:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:22,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:22,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:22,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:22,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:49:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:22,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:49:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:49:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:22,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 8 proven. 330 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:22,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329449029] [2020-10-27 14:49:22,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:22,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:49:22,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654453696] [2020-10-27 14:49:22,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:49:22,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:22,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:49:22,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:49:22,113 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 19 states. [2020-10-27 14:49:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:22,709 INFO L93 Difference]: Finished difference Result 215 states and 229 transitions. [2020-10-27 14:49:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:49:22,709 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-10-27 14:49:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:22,711 INFO L225 Difference]: With dead ends: 215 [2020-10-27 14:49:22,711 INFO L226 Difference]: Without dead ends: 167 [2020-10-27 14:49:22,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:49:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-27 14:49:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 103. [2020-10-27 14:49:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:49:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-27 14:49:22,726 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2020-10-27 14:49:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:22,726 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-27 14:49:22,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:49:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-27 14:49:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:49:22,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:22,727 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:22,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:49:22,728 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1976363959, now seen corresponding path program 18 times [2020-10-27 14:49:22,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:22,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313826455] [2020-10-27 14:49:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:27,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:49:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:28,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:49:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:49:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:49:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:28,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:49:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 8 proven. 376 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:28,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313826455] [2020-10-27 14:49:28,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:28,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:49:28,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009132909] [2020-10-27 14:49:28,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:49:28,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:28,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:49:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:49:28,115 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 20 states. [2020-10-27 14:49:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:28,734 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2020-10-27 14:49:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:49:28,734 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 100 [2020-10-27 14:49:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:28,736 INFO L225 Difference]: With dead ends: 223 [2020-10-27 14:49:28,736 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:49:28,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:49:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:49:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 106. [2020-10-27 14:49:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 14:49:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-27 14:49:28,753 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2020-10-27 14:49:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:28,753 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-27 14:49:28,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:49:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-27 14:49:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 14:49:28,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:28,755 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:28,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:49:28,755 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1638807644, now seen corresponding path program 19 times [2020-10-27 14:49:28,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:28,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248070870] [2020-10-27 14:49:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:49:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:34,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:34,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:49:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:34,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:49:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:49:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:49:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 425 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:34,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248070870] [2020-10-27 14:49:34,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:34,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:49:34,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843896172] [2020-10-27 14:49:34,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:49:34,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:34,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:49:34,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:49:34,176 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 21 states. [2020-10-27 14:49:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:34,847 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2020-10-27 14:49:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:49:34,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 103 [2020-10-27 14:49:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:34,850 INFO L225 Difference]: With dead ends: 231 [2020-10-27 14:49:34,850 INFO L226 Difference]: Without dead ends: 183 [2020-10-27 14:49:34,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:49:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-27 14:49:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 109. [2020-10-27 14:49:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:49:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2020-10-27 14:49:34,864 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 103 [2020-10-27 14:49:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:34,865 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2020-10-27 14:49:34,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:49:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2020-10-27 14:49:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 14:49:34,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:34,866 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:34,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:49:34,866 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:34,867 INFO L82 PathProgramCache]: Analyzing trace with hash -616118121, now seen corresponding path program 20 times [2020-10-27 14:49:34,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:34,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082348037] [2020-10-27 14:49:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 14:49:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:49:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 14:49:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:49:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:49:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:49:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:49:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:40,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:49:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:40,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:40,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:40,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:49:40,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:49:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 8 proven. 477 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:40,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082348037] [2020-10-27 14:49:40,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:40,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:49:40,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839384428] [2020-10-27 14:49:40,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:49:40,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:40,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:49:40,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:49:40,397 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 22 states. [2020-10-27 14:49:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:41,094 INFO L93 Difference]: Finished difference Result 239 states and 256 transitions. [2020-10-27 14:49:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:49:41,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 106 [2020-10-27 14:49:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:41,097 INFO L225 Difference]: With dead ends: 239 [2020-10-27 14:49:41,097 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 14:49:41,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:49:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 14:49:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 112. [2020-10-27 14:49:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:49:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2020-10-27 14:49:41,119 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 106 [2020-10-27 14:49:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:41,119 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2020-10-27 14:49:41,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:49:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2020-10-27 14:49:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:49:41,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:41,122 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:41,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:49:41,122 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2124431044, now seen corresponding path program 21 times [2020-10-27 14:49:41,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:41,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8462524] [2020-10-27 14:49:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:49:46,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:49:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 14:49:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:49:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:49:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:46,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:46,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:49:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:49:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:49:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:46,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:49:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:46,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 8 proven. 532 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:46,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8462524] [2020-10-27 14:49:46,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:46,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:49:46,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528148386] [2020-10-27 14:49:46,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:49:46,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:49:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:49:46,747 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 23 states. [2020-10-27 14:49:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:47,584 INFO L93 Difference]: Finished difference Result 247 states and 265 transitions. [2020-10-27 14:49:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:49:47,585 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 109 [2020-10-27 14:49:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:47,588 INFO L225 Difference]: With dead ends: 247 [2020-10-27 14:49:47,589 INFO L226 Difference]: Without dead ends: 199 [2020-10-27 14:49:47,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:49:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-27 14:49:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 115. [2020-10-27 14:49:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:49:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-27 14:49:47,606 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2020-10-27 14:49:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:47,606 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-27 14:49:47,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:49:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-27 14:49:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:49:47,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:47,608 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:47,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:49:47,608 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1503691401, now seen corresponding path program 22 times [2020-10-27 14:49:47,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:47,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903540311] [2020-10-27 14:49:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:49:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:49:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:49:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:49:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:49:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:49:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 8 proven. 590 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:53,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903540311] [2020-10-27 14:49:53,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:53,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:49:53,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709251027] [2020-10-27 14:49:53,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:49:53,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:49:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:49:53,151 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 24 states. [2020-10-27 14:49:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:53,990 INFO L93 Difference]: Finished difference Result 255 states and 274 transitions. [2020-10-27 14:49:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:49:53,990 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 112 [2020-10-27 14:49:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:53,992 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:49:53,992 INFO L226 Difference]: Without dead ends: 207 [2020-10-27 14:49:53,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:49:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-27 14:49:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 118. [2020-10-27 14:49:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 14:49:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-27 14:49:54,016 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112 [2020-10-27 14:49:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:54,016 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-27 14:49:54,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:49:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-27 14:49:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:49:54,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:54,018 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:54,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:49:54,018 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash 247520740, now seen corresponding path program 23 times [2020-10-27 14:49:54,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:54,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442036877] [2020-10-27 14:49:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5423 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:49:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:49:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:49:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:49:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:49:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 8 proven. 651 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:49:59,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442036877] [2020-10-27 14:49:59,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:59,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:49:59,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971490392] [2020-10-27 14:49:59,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:49:59,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:49:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:49:59,950 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2020-10-27 14:50:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:00,709 INFO L93 Difference]: Finished difference Result 263 states and 283 transitions. [2020-10-27 14:50:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:50:00,710 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 115 [2020-10-27 14:50:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:00,711 INFO L225 Difference]: With dead ends: 263 [2020-10-27 14:50:00,711 INFO L226 Difference]: Without dead ends: 215 [2020-10-27 14:50:00,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:50:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-27 14:50:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 121. [2020-10-27 14:50:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:50:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-10-27 14:50:00,728 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2020-10-27 14:50:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:00,728 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-10-27 14:50:00,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:50:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-10-27 14:50:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 14:50:00,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:00,729 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:00,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:50:00,729 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:00,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:00,730 INFO L82 PathProgramCache]: Analyzing trace with hash -359331241, now seen corresponding path program 24 times [2020-10-27 14:50:00,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:00,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223300962] [2020-10-27 14:50:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 14:50:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:50:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-27 14:50:05,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:50:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:50:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:06,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:50:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:06,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:06,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:06,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:50:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:50:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:06,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:06,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:06,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:50:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 8 proven. 715 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:06,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223300962] [2020-10-27 14:50:06,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:06,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:50:06,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138470228] [2020-10-27 14:50:06,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:50:06,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:06,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:50:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:50:06,447 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 26 states. [2020-10-27 14:50:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:07,354 INFO L93 Difference]: Finished difference Result 271 states and 292 transitions. [2020-10-27 14:50:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:50:07,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2020-10-27 14:50:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:07,357 INFO L225 Difference]: With dead ends: 271 [2020-10-27 14:50:07,357 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 14:50:07,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:50:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 14:50:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 124. [2020-10-27 14:50:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:50:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-10-27 14:50:07,374 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118 [2020-10-27 14:50:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:07,375 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-10-27 14:50:07,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:50:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-10-27 14:50:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:50:07,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:07,376 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:07,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:50:07,376 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1569348348, now seen corresponding path program 25 times [2020-10-27 14:50:07,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:07,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826548637] [2020-10-27 14:50:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:50:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:50:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:12,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:50:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:50:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:50:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:12,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:12,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:50:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:12,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:12,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:12,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 8 proven. 782 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826548637] [2020-10-27 14:50:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:50:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595230226] [2020-10-27 14:50:13,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:50:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:50:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:50:13,006 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 27 states. [2020-10-27 14:50:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:13,907 INFO L93 Difference]: Finished difference Result 279 states and 301 transitions. [2020-10-27 14:50:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:50:13,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 121 [2020-10-27 14:50:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:13,910 INFO L225 Difference]: With dead ends: 279 [2020-10-27 14:50:13,910 INFO L226 Difference]: Without dead ends: 231 [2020-10-27 14:50:13,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:50:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-27 14:50:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 127. [2020-10-27 14:50:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 14:50:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-27 14:50:13,929 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121 [2020-10-27 14:50:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:13,930 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-27 14:50:13,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:50:13,930 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-27 14:50:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:50:13,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:13,931 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:13,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:50:13,932 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:13,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1528467657, now seen corresponding path program 26 times [2020-10-27 14:50:13,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:13,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751663264] [2020-10-27 14:50:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 14:50:20,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:50:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6260 [2020-10-27 14:50:20,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:50:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:50:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:20,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:20,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:50:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:20,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:50:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:20,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:20,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:50:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:20,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:20,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:20,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:20,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:20,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:20,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:50:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:20,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:20,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:20,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 8 proven. 852 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:20,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751663264] [2020-10-27 14:50:20,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:20,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:50:20,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251688405] [2020-10-27 14:50:20,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:50:20,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:50:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:50:20,848 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 28 states. [2020-10-27 14:50:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:21,948 INFO L93 Difference]: Finished difference Result 287 states and 310 transitions. [2020-10-27 14:50:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:50:21,948 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 124 [2020-10-27 14:50:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:21,950 INFO L225 Difference]: With dead ends: 287 [2020-10-27 14:50:21,950 INFO L226 Difference]: Without dead ends: 239 [2020-10-27 14:50:21,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:50:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-27 14:50:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 130. [2020-10-27 14:50:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:50:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-10-27 14:50:21,969 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124 [2020-10-27 14:50:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:21,970 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-10-27 14:50:21,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:50:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-10-27 14:50:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 14:50:21,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:21,971 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:21,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:50:21,972 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash 872453156, now seen corresponding path program 27 times [2020-10-27 14:50:21,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:21,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845243008] [2020-10-27 14:50:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6029 [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:28,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:50:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:28,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:50:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:50:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:28,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:50:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:28,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:50:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 8 proven. 925 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:28,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845243008] [2020-10-27 14:50:28,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:28,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:50:28,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401808603] [2020-10-27 14:50:28,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:50:28,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:28,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:50:28,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:50:28,719 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 29 states. [2020-10-27 14:50:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:29,784 INFO L93 Difference]: Finished difference Result 295 states and 319 transitions. [2020-10-27 14:50:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:50:29,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 127 [2020-10-27 14:50:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:29,788 INFO L225 Difference]: With dead ends: 295 [2020-10-27 14:50:29,788 INFO L226 Difference]: Without dead ends: 247 [2020-10-27 14:50:29,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:50:29,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-27 14:50:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 133. [2020-10-27 14:50:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 14:50:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-10-27 14:50:29,809 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 127 [2020-10-27 14:50:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:29,809 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-10-27 14:50:29,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:50:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-10-27 14:50:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 14:50:29,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:29,811 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:29,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:50:29,811 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:29,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1680954345, now seen corresponding path program 28 times [2020-10-27 14:50:29,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:29,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864609424] [2020-10-27 14:50:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:37,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:50:37,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:50:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7742 [2020-10-27 14:50:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:50:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 14:50:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:50:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:38,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:38,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:38,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:50:38,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:50:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:38,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:38,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:50:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:50:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 8 proven. 1001 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:38,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864609424] [2020-10-27 14:50:38,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:38,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:50:38,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004004254] [2020-10-27 14:50:38,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:50:38,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:38,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:50:38,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:50:38,312 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 30 states. [2020-10-27 14:50:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:39,495 INFO L93 Difference]: Finished difference Result 303 states and 328 transitions. [2020-10-27 14:50:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:50:39,496 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 130 [2020-10-27 14:50:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:39,498 INFO L225 Difference]: With dead ends: 303 [2020-10-27 14:50:39,498 INFO L226 Difference]: Without dead ends: 255 [2020-10-27 14:50:39,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:50:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-27 14:50:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 136. [2020-10-27 14:50:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:50:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-27 14:50:39,519 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2020-10-27 14:50:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:39,519 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-27 14:50:39,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:50:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-27 14:50:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:50:39,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:39,520 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:39,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:50:39,521 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:39,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2078037180, now seen corresponding path program 29 times [2020-10-27 14:50:39,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:39,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256695603] [2020-10-27 14:50:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5200 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 14:50:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:45,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:45,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:50:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:45,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:45,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:45,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:45,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:45,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:50:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:45,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:45,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:45,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:45,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:50:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:50:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:45,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 8 proven. 1080 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:45,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256695603] [2020-10-27 14:50:45,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:45,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:50:45,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886165032] [2020-10-27 14:50:45,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:50:45,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:50:45,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:50:45,524 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 31 states. [2020-10-27 14:50:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:46,919 INFO L93 Difference]: Finished difference Result 311 states and 337 transitions. [2020-10-27 14:50:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:50:46,920 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 133 [2020-10-27 14:50:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:46,922 INFO L225 Difference]: With dead ends: 311 [2020-10-27 14:50:46,922 INFO L226 Difference]: Without dead ends: 263 [2020-10-27 14:50:46,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:50:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-27 14:50:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 139. [2020-10-27 14:50:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:50:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-27 14:50:46,946 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 133 [2020-10-27 14:50:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:46,946 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-27 14:50:46,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:50:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-27 14:50:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:50:46,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:46,947 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:46,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:50:46,948 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:46,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1062125815, now seen corresponding path program 30 times [2020-10-27 14:50:46,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:46,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427178630] [2020-10-27 14:50:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5163 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 14:50:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:52,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:50:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:50:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:50:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:50:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:52,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 8 proven. 1162 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:50:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427178630] [2020-10-27 14:50:52,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:52,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:50:52,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516564005] [2020-10-27 14:50:52,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:50:52,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:52,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:50:52,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:50:52,926 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 32 states. [2020-10-27 14:50:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:54,389 INFO L93 Difference]: Finished difference Result 319 states and 346 transitions. [2020-10-27 14:50:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:50:54,390 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 136 [2020-10-27 14:50:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:54,392 INFO L225 Difference]: With dead ends: 319 [2020-10-27 14:50:54,392 INFO L226 Difference]: Without dead ends: 271 [2020-10-27 14:50:54,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:50:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-27 14:50:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 142. [2020-10-27 14:50:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 14:50:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-10-27 14:50:54,419 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 136 [2020-10-27 14:50:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:54,420 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-10-27 14:50:54,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:50:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-10-27 14:50:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:50:54,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:54,421 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:54,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:50:54,421 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash 975235684, now seen corresponding path program 31 times [2020-10-27 14:50:54,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:54,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754227979] [2020-10-27 14:50:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:00,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5721 [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:51:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:51:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:51:00,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:51:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:51:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:01,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:51:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:01,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:01,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:01,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:51:01,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:51:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:51:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:51:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:51:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:51:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:01,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:51:01,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:51:01,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:51:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:51:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:51:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:51:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:51:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:51:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:51:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 8 proven. 1247 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:51:01,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754227979] [2020-10-27 14:51:01,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:51:01,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:51:01,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808872631] [2020-10-27 14:51:01,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:51:01,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:51:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:51:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:51:01,052 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 33 states. [2020-10-27 14:51:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:51:02,595 INFO L93 Difference]: Finished difference Result 327 states and 355 transitions. [2020-10-27 14:51:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:51:02,596 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 139 [2020-10-27 14:51:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:51:02,597 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:51:02,597 INFO L226 Difference]: Without dead ends: 279 [2020-10-27 14:51:02,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:51:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-27 14:51:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 145. [2020-10-27 14:51:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:51:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2020-10-27 14:51:02,626 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 139 [2020-10-27 14:51:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:51:02,626 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2020-10-27 14:51:02,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:51:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2020-10-27 14:51:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 14:51:02,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:51:02,628 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:51:02,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:51:02,628 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:51:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:51:02,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1998344745, now seen corresponding path program 32 times [2020-10-27 14:51:02,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:51:02,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785030850] [2020-10-27 14:51:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:51:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:51:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:51:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking...