/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/reducercommutativity/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:44:00,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:44:00,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:44:01,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:44:01,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:44:01,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:44:01,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:44:01,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:44:01,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:44:01,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:44:01,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:44:01,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:44:01,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:44:01,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:44:01,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:44:01,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:44:01,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:44:01,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:44:01,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:44:01,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:44:01,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:44:01,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:44:01,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:44:01,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:44:01,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:44:01,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:44:01,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:44:01,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:44:01,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:44:01,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:44:01,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:44:01,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:44:01,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:44:01,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:44:01,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:44:01,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:44:01,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:44:01,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:44:01,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:44:01,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:44:01,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:44:01,149 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 22:44:01,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:44:01,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:44:01,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:44:01,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:44:01,179 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:44:01,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:44:01,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:44:01,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:44:01,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:44:01,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:44:01,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:44:01,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:44:01,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:44:01,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:44:01,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:44:01,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:44:01,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:44:01,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:44:01,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:44:01,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:44:01,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:44:01,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:44:01,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:44:01,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:44:01,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:44:01,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:44:01,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:44:01,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:44:01,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:44:01,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:44:01,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:44:01,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:44:01,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:44:01,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:44:01,684 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:44:01,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-27 22:44:01,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c080544e/40babde3f6e74718a6a841450114f26f/FLAGaf87a58f5 [2020-10-27 22:44:02,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:44:02,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-27 22:44:02,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c080544e/40babde3f6e74718a6a841450114f26f/FLAGaf87a58f5 [2020-10-27 22:44:02,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c080544e/40babde3f6e74718a6a841450114f26f [2020-10-27 22:44:02,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:44:02,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:44:02,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:44:02,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:44:02,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:44:02,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:02" (1/1) ... [2020-10-27 22:44:02,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5033905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:02, skipping insertion in model container [2020-10-27 22:44:02,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:02" (1/1) ... [2020-10-27 22:44:02,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:44:02,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:44:03,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:44:03,043 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:44:03,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:44:03,087 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:44:03,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03 WrapperNode [2020-10-27 22:44:03,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:44:03,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:44:03,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:44:03,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:44:03,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (1/1) ... [2020-10-27 22:44:03,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:44:03,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:44:03,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:44:03,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:44:03,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (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 22:44:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:44:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:44:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:44:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 22:44:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:44:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:44:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:44:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:44:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:44:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:44:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:44:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:44:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 22:44:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:44:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:44:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:44:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:44:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:44:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:44:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:44:03,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:44:03,801 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:44:03,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:03 BoogieIcfgContainer [2020-10-27 22:44:03,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:44:03,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:44:03,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:44:03,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:44:03,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:44:02" (1/3) ... [2020-10-27 22:44:03,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e063bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:03, skipping insertion in model container [2020-10-27 22:44:03,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:03" (2/3) ... [2020-10-27 22:44:03,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e063bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:03, skipping insertion in model container [2020-10-27 22:44:03,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:03" (3/3) ... [2020-10-27 22:44:03,813 INFO L111 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-27 22:44:03,828 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:44:03,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:44:03,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:44:03,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:44:03,882 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:44:03,882 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:44:03,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:44:03,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:44:03,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:44:03,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:44:03,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:44:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 22:44:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:44:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:03,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:03,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:03,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 22:44:03,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:03,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562695914] [2020-10-27 22:44:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:44:05,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-27 22:44:05,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:44:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:44:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:44:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:44:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:44:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:05,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:44:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:05,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:44:05,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562695914] [2020-10-27 22:44:05,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:44:05,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:44:05,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272435301] [2020-10-27 22:44:05,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:44:05,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:05,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:44:05,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:44:05,979 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 22:44:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:06,085 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 22:44:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:44:06,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:44:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:06,095 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:44:06,095 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 22:44:06,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:44:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 22:44:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 22:44:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:44:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 22:44:06,144 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 22:44:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:06,145 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 22:44:06,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:44:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 22:44:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:44:06,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:06,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:06,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:44:06,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 22:44:06,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:06,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120713870] [2020-10-27 22:44:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:44:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-27 22:44:07,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:07,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:07,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:07,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:44:07,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:07,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:08,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:44:08,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:44:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:44:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:08,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:44:08,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:44:08,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120713870] [2020-10-27 22:44:08,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:44:08,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:44:08,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413355825] [2020-10-27 22:44:08,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:44:08,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:08,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:44:08,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:44:08,056 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-27 22:44:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:08,195 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-27 22:44:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:44:08,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:44:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:08,197 INFO L225 Difference]: With dead ends: 52 [2020-10-27 22:44:08,198 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:44:08,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 22:44:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:44:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 22:44:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 22:44:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-27 22:44:08,210 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-27 22:44:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:08,210 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-27 22:44:08,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:44:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-27 22:44:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:44:08,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:08,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:08,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:44:08,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash 208370082, now seen corresponding path program 1 times [2020-10-27 22:44:08,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:08,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077843428] [2020-10-27 22:44:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:44:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:44:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 22:44:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:13,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:44:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:44:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 22:44:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:13,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 22:44:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:13,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:44:13,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:44:13,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:44:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 22:44:13,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077843428] [2020-10-27 22:44:13,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:13,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:44:13,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205831594] [2020-10-27 22:44:13,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:44:13,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:44:13,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:44:13,481 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-27 22:44:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:13,741 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2020-10-27 22:44:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:44:13,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-27 22:44:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:13,743 INFO L225 Difference]: With dead ends: 56 [2020-10-27 22:44:13,743 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 22:44:13,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:44:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 22:44:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-27 22:44:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 22:44:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 22:44:13,759 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 43 [2020-10-27 22:44:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:13,759 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 22:44:13,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:44:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 22:44:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 22:44:13,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:13,762 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:13,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:44:13,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 811940529, now seen corresponding path program 2 times [2020-10-27 22:44:13,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:13,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010349033] [2020-10-27 22:44:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:15,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:44:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 22:44:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:44:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:44:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:18,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 22:44:18,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:44:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:18,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 22:44:18,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:44:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 22:44:19,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 22:44:19,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010349033] [2020-10-27 22:44:19,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:19,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:44:19,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055689924] [2020-10-27 22:44:19,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:44:19,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:19,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:44:19,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:44:19,053 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-27 22:44:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:19,270 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-27 22:44:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:44:19,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-27 22:44:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:19,272 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:44:19,272 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:44:19,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:44:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:44:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 22:44:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 22:44:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 22:44:19,281 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 52 [2020-10-27 22:44:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:19,281 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 22:44:19,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:44:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 22:44:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 22:44:19,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:19,283 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:19,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:44:19,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash -610286718, now seen corresponding path program 3 times [2020-10-27 22:44:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937051681] [2020-10-27 22:44:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:44:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:24,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 22:44:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:24,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:44:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:44:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 22:44:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 22:44:24,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937051681] [2020-10-27 22:44:24,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:24,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:44:24,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65389930] [2020-10-27 22:44:24,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:44:24,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:24,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:44:24,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:44:24,719 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-27 22:44:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:24,989 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-27 22:44:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:44:24,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-27 22:44:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:24,990 INFO L225 Difference]: With dead ends: 68 [2020-10-27 22:44:24,991 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 22:44:24,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:44:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 22:44:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 22:44:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:44:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 22:44:24,999 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 61 [2020-10-27 22:44:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:25,000 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 22:44:25,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:44:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 22:44:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:44:25,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:25,001 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:25,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:44:25,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1355680303, now seen corresponding path program 4 times [2020-10-27 22:44:25,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:25,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891011611] [2020-10-27 22:44:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 22:44:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 22:44:30,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:44:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:44:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:30,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 22:44:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:44:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 22:44:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:44:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:44:30,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 22:44:30,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891011611] [2020-10-27 22:44:30,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:30,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:44:30,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809744931] [2020-10-27 22:44:30,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:44:30,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:30,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:44:30,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:44:30,499 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-10-27 22:44:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:30,826 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-10-27 22:44:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:44:30,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-27 22:44:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:30,829 INFO L225 Difference]: With dead ends: 74 [2020-10-27 22:44:30,829 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:44:30,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:44:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:44:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 22:44:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 22:44:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-27 22:44:30,842 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 70 [2020-10-27 22:44:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:30,842 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-27 22:44:30,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:44:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-27 22:44:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:44:30,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:30,848 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:30,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:44:30,849 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:30,850 INFO L82 PathProgramCache]: Analyzing trace with hash 999380322, now seen corresponding path program 5 times [2020-10-27 22:44:30,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:30,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671173408] [2020-10-27 22:44:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:35,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:44:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:44:35,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:35,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:36,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:44:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:36,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:36,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 22:44:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:44:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:44:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:36,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:36,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 22:44:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:44:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 35 proven. 283 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 22:44:36,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671173408] [2020-10-27 22:44:36,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:36,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:44:36,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374026684] [2020-10-27 22:44:36,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:44:36,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:44:36,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:44:36,512 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 10 states. [2020-10-27 22:44:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:36,873 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2020-10-27 22:44:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:44:36,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-27 22:44:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:36,875 INFO L225 Difference]: With dead ends: 82 [2020-10-27 22:44:36,875 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 22:44:36,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:44:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 22:44:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 22:44:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 22:44:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-27 22:44:36,896 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 79 [2020-10-27 22:44:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:36,896 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-27 22:44:36,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:44:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-27 22:44:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:44:36,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:36,898 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:36,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:44:36,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1278760913, now seen corresponding path program 1 times [2020-10-27 22:44:36,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:36,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681757800] [2020-10-27 22:44:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:41,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:44:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:42,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:42,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:42,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 22:44:42,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:44:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:44:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:44:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:42,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 22:44:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:44:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:44:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 22:44:42,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:44:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 51 proven. 402 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 22:44:42,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681757800] [2020-10-27 22:44:42,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:42,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:44:42,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678013150] [2020-10-27 22:44:42,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:44:42,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:42,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:44:42,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:44:42,672 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 12 states. [2020-10-27 22:44:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:43,071 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-10-27 22:44:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:44:43,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-10-27 22:44:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:43,073 INFO L225 Difference]: With dead ends: 91 [2020-10-27 22:44:43,073 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 22:44:43,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:44:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 22:44:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-27 22:44:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 22:44:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-27 22:44:43,084 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 90 [2020-10-27 22:44:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:43,084 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-27 22:44:43,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:44:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-27 22:44:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 22:44:43,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:43,086 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:43,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:44:43,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1656216006, now seen corresponding path program 2 times [2020-10-27 22:44:43,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:43,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980753773] [2020-10-27 22:44:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:44:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:44:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:44:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 22:44:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:44:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:44:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:44:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 70 proven. 544 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 22:44:49,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980753773] [2020-10-27 22:44:49,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:49,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 22:44:49,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937455639] [2020-10-27 22:44:49,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:44:49,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:49,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:44:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:44:49,124 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 14 states. [2020-10-27 22:44:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:49,602 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2020-10-27 22:44:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:44:49,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-27 22:44:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:49,604 INFO L225 Difference]: With dead ends: 101 [2020-10-27 22:44:49,605 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 22:44:49,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:44:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 22:44:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 22:44:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:44:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 22:44:49,615 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 101 [2020-10-27 22:44:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:49,616 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 22:44:49,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:44:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 22:44:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:44:49,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:49,618 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:49,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:44:49,618 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1794373579, now seen corresponding path program 3 times [2020-10-27 22:44:49,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:49,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558039411] [2020-10-27 22:44:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 22:44:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 22:44:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 22:44:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:54,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:54,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 22:44:54,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:44:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:44:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:44:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:55,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:55,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:55,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:44:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:55,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:44:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:55,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 92 proven. 709 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 22:44:55,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558039411] [2020-10-27 22:44:55,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:55,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:44:55,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314808012] [2020-10-27 22:44:55,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:44:55,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:44:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:44:55,576 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 16 states. [2020-10-27 22:44:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:56,134 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2020-10-27 22:44:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:44:56,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-10-27 22:44:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:56,136 INFO L225 Difference]: With dead ends: 111 [2020-10-27 22:44:56,136 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 22:44:56,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:44:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 22:44:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 22:44:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 22:44:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-27 22:44:56,157 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 112 [2020-10-27 22:44:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:56,157 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-27 22:44:56,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:44:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-27 22:44:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 22:44:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:56,164 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:56,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:44:56,164 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:56,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1303618006, now seen corresponding path program 4 times [2020-10-27 22:44:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:56,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807997057] [2020-10-27 22:44:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:01,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:01,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 22:45:01,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 22:45:01,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:45:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 22:45:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:45:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:01,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:01,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:01,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-27 22:45:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:45:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:45:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:02,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:02,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:02,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:02,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-27 22:45:02,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:45:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 22:45:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-27 22:45:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:45:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 117 proven. 897 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-27 22:45:02,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807997057] [2020-10-27 22:45:02,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:02,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:45:02,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060281858] [2020-10-27 22:45:02,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:45:02,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:45:02,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:45:02,567 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 18 states. [2020-10-27 22:45:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:03,065 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2020-10-27 22:45:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:45:03,065 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-10-27 22:45:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:03,066 INFO L225 Difference]: With dead ends: 121 [2020-10-27 22:45:03,066 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 22:45:03,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:45:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 22:45:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-27 22:45:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 22:45:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-10-27 22:45:03,082 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 123 [2020-10-27 22:45:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:03,082 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-10-27 22:45:03,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:45:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-10-27 22:45:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 22:45:03,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:03,084 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:03,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:45:03,084 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:03,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1981097831, now seen corresponding path program 5 times [2020-10-27 22:45:03,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:03,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085798196] [2020-10-27 22:45:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:45:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 22:45:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:45:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:08,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:08,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:08,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:08,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:08,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-27 22:45:08,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:45:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:45:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:45:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 145 proven. 1108 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 22:45:09,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085798196] [2020-10-27 22:45:09,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:09,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:45:09,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116315042] [2020-10-27 22:45:09,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:45:09,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:45:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:45:09,471 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 20 states. [2020-10-27 22:45:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:10,101 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2020-10-27 22:45:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:45:10,102 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-10-27 22:45:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:10,103 INFO L225 Difference]: With dead ends: 131 [2020-10-27 22:45:10,104 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 22:45:10,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-27 22:45:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 22:45:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-27 22:45:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 22:45:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-10-27 22:45:10,116 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 134 [2020-10-27 22:45:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:10,116 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-10-27 22:45:10,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:45:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-10-27 22:45:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 22:45:10,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:10,118 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:10,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:45:10,119 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:10,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1538859662, now seen corresponding path program 6 times [2020-10-27 22:45:10,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:10,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043223802] [2020-10-27 22:45:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:45:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:15,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:15,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:15,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:15,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:45:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:45:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-27 22:45:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:45:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 22:45:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 176 proven. 1342 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-27 22:45:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043223802] [2020-10-27 22:45:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:16,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:45:16,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306219724] [2020-10-27 22:45:16,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:45:16,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:45:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:45:16,401 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 22 states. [2020-10-27 22:45:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:17,132 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-27 22:45:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 22:45:17,132 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-27 22:45:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:17,133 INFO L225 Difference]: With dead ends: 141 [2020-10-27 22:45:17,134 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 22:45:17,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:45:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 22:45:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-27 22:45:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 22:45:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-27 22:45:17,154 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 145 [2020-10-27 22:45:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:17,155 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-27 22:45:17,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:45:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-27 22:45:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 22:45:17,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:17,159 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:17,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:45:17,160 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash 947975939, now seen corresponding path program 7 times [2020-10-27 22:45:17,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:17,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396702147] [2020-10-27 22:45:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:45:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:45:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:45:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:22,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:22,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:22,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:22,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-27 22:45:22,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:45:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:45:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:45:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:45:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:45:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 210 proven. 1599 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-27 22:45:23,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396702147] [2020-10-27 22:45:23,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:23,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 22:45:23,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386696183] [2020-10-27 22:45:23,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 22:45:23,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:23,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 22:45:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:45:23,523 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 24 states. [2020-10-27 22:45:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:24,294 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2020-10-27 22:45:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 22:45:24,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 156 [2020-10-27 22:45:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:24,296 INFO L225 Difference]: With dead ends: 151 [2020-10-27 22:45:24,296 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 22:45:24,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=973, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 22:45:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 22:45:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-27 22:45:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 22:45:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2020-10-27 22:45:24,314 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 156 [2020-10-27 22:45:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:24,314 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2020-10-27 22:45:24,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 22:45:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2020-10-27 22:45:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 22:45:24,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:24,316 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:24,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:45:24,316 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1075288334, now seen corresponding path program 8 times [2020-10-27 22:45:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:24,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676280621] [2020-10-27 22:45:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:45:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:29,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:29,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:45:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:45:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:45:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:45:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 22:45:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:30,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 247 proven. 1879 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-27 22:45:30,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676280621] [2020-10-27 22:45:30,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:30,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 22:45:30,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861172882] [2020-10-27 22:45:30,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 22:45:30,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:30,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 22:45:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:45:30,987 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand 26 states. [2020-10-27 22:45:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:31,807 INFO L93 Difference]: Finished difference Result 161 states and 200 transitions. [2020-10-27 22:45:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 22:45:31,807 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 167 [2020-10-27 22:45:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:31,809 INFO L225 Difference]: With dead ends: 161 [2020-10-27 22:45:31,809 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 22:45:31,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:45:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 22:45:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-27 22:45:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 22:45:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-27 22:45:31,825 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 167 [2020-10-27 22:45:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:31,825 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-27 22:45:31,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 22:45:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-27 22:45:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 22:45:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:31,831 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:31,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:45:31,831 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash -200464737, now seen corresponding path program 9 times [2020-10-27 22:45:31,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:31,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577157035] [2020-10-27 22:45:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:36,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:45:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:45:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 22:45:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:45:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 22:45:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 287 proven. 2182 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-27 22:45:38,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577157035] [2020-10-27 22:45:38,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:38,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 22:45:38,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616795893] [2020-10-27 22:45:38,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 22:45:38,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:38,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 22:45:38,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:45:38,692 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 28 states. [2020-10-27 22:45:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:39,623 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2020-10-27 22:45:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:45:39,624 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-27 22:45:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:39,625 INFO L225 Difference]: With dead ends: 171 [2020-10-27 22:45:39,625 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 22:45:39,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=473, Invalid=1333, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 22:45:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 22:45:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-27 22:45:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 22:45:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-27 22:45:39,633 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 178 [2020-10-27 22:45:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:39,633 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-27 22:45:39,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 22:45:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-27 22:45:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 22:45:39,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:39,635 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:39,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:45:39,635 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1396992854, now seen corresponding path program 10 times [2020-10-27 22:45:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:39,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288905443] [2020-10-27 22:45:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:44,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:44,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:44,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:44,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:45:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:45,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:45:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:45:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:45:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:45:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:46,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3220 backedges. 330 proven. 2508 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-27 22:45:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288905443] [2020-10-27 22:45:46,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:46,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 22:45:46,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824307459] [2020-10-27 22:45:46,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 22:45:46,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 22:45:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:45:46,969 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 30 states. [2020-10-27 22:45:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:47,936 INFO L93 Difference]: Finished difference Result 181 states and 224 transitions. [2020-10-27 22:45:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 22:45:47,936 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 189 [2020-10-27 22:45:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:47,938 INFO L225 Difference]: With dead ends: 181 [2020-10-27 22:45:47,938 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 22:45:47,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=536, Invalid=1534, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:45:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 22:45:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 22:45:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 22:45:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2020-10-27 22:45:47,951 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 189 [2020-10-27 22:45:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:47,951 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2020-10-27 22:45:47,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 22:45:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2020-10-27 22:45:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 22:45:47,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:47,953 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:47,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:45:47,953 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -451971525, now seen corresponding path program 11 times [2020-10-27 22:45:47,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:47,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771621448] [2020-10-27 22:45:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 22:45:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:45:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:45:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:45:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:45:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:45:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:45:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 22:45:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 376 proven. 2857 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-10-27 22:45:55,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771621448] [2020-10-27 22:45:55,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:55,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 22:45:55,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968370270] [2020-10-27 22:45:55,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 22:45:55,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:55,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 22:45:55,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:45:55,506 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand 32 states. [2020-10-27 22:45:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:56,528 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-10-27 22:45:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 22:45:56,529 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-27 22:45:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:56,530 INFO L225 Difference]: With dead ends: 191 [2020-10-27 22:45:56,530 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 22:45:56,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=603, Invalid=1749, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 22:45:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 22:45:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-27 22:45:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 22:45:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 122 transitions. [2020-10-27 22:45:56,540 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 122 transitions. Word has length 200 [2020-10-27 22:45:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:56,540 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 122 transitions. [2020-10-27 22:45:56,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 22:45:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 122 transitions. [2020-10-27 22:45:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 22:45:56,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:56,546 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:45:56,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:45:56,546 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2118684742, now seen corresponding path program 12 times [2020-10-27 22:45:56,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:56,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555361704] [2020-10-27 22:45:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:46:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:02,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:02,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:46:02,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 22:46:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:02,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:46:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 22:46:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 425 proven. 3229 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-10-27 22:46:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555361704] [2020-10-27 22:46:04,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:04,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 22:46:04,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125248918] [2020-10-27 22:46:04,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 22:46:04,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 22:46:04,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:46:04,548 INFO L87 Difference]: Start difference. First operand 101 states and 122 transitions. Second operand 34 states. [2020-10-27 22:46:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:05,757 INFO L93 Difference]: Finished difference Result 201 states and 248 transitions. [2020-10-27 22:46:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:46:05,758 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 211 [2020-10-27 22:46:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:05,759 INFO L225 Difference]: With dead ends: 201 [2020-10-27 22:46:05,760 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 22:46:05,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=674, Invalid=1978, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 22:46:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 22:46:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-27 22:46:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 22:46:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2020-10-27 22:46:05,769 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 211 [2020-10-27 22:46:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:05,769 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2020-10-27 22:46:05,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 22:46:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2020-10-27 22:46:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 22:46:05,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:05,771 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:05,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:46:05,771 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1583195607, now seen corresponding path program 13 times [2020-10-27 22:46:05,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:05,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503784425] [2020-10-27 22:46:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 22:46:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 22:46:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:46:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 22:46:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:46:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:11,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:11,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:46:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:46:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:46:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:46:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 22:46:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 22:46:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4639 backedges. 477 proven. 3624 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-10-27 22:46:13,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503784425] [2020-10-27 22:46:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 22:46:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271122246] [2020-10-27 22:46:13,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 22:46:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 22:46:13,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:46:13,853 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand 36 states. [2020-10-27 22:46:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:15,116 INFO L93 Difference]: Finished difference Result 211 states and 260 transitions. [2020-10-27 22:46:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 22:46:15,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 222 [2020-10-27 22:46:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:15,118 INFO L225 Difference]: With dead ends: 211 [2020-10-27 22:46:15,119 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 22:46:15,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=749, Invalid=2221, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:46:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 22:46:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-27 22:46:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 22:46:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-10-27 22:46:15,128 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 222 [2020-10-27 22:46:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:15,129 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-10-27 22:46:15,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 22:46:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-10-27 22:46:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-27 22:46:15,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:15,131 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:15,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:46:15,131 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1834240994, now seen corresponding path program 14 times [2020-10-27 22:46:15,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:15,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335264226] [2020-10-27 22:46:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-27 22:46:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:46:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:20,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:20,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:20,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:20,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:21,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:21,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-27 22:46:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:46:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:46:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:46:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:46:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 22:46:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5170 backedges. 532 proven. 4042 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2020-10-27 22:46:23,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335264226] [2020-10-27 22:46:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:23,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 22:46:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4098534] [2020-10-27 22:46:23,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 22:46:23,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 22:46:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1038, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:46:23,600 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 38 states. [2020-10-27 22:46:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:24,951 INFO L93 Difference]: Finished difference Result 221 states and 272 transitions. [2020-10-27 22:46:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 22:46:24,952 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 233 [2020-10-27 22:46:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:24,953 INFO L225 Difference]: With dead ends: 221 [2020-10-27 22:46:24,953 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 22:46:24,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=2478, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 22:46:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 22:46:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-27 22:46:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 22:46:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2020-10-27 22:46:24,964 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 233 [2020-10-27 22:46:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:24,964 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2020-10-27 22:46:24,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 22:46:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2020-10-27 22:46:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 22:46:24,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:24,966 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:24,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 22:46:24,966 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:24,967 INFO L82 PathProgramCache]: Analyzing trace with hash -447908493, now seen corresponding path program 15 times [2020-10-27 22:46:24,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:24,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131170623] [2020-10-27 22:46:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:29,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:29,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 22:46:29,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:46:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:46:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 22:46:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:46:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:46:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:46:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:46:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:32,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:46:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 22:46:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5730 backedges. 590 proven. 4483 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2020-10-27 22:46:33,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131170623] [2020-10-27 22:46:33,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:33,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 22:46:33,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446287161] [2020-10-27 22:46:33,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 22:46:33,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 22:46:33,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1153, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:46:33,090 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 40 states. [2020-10-27 22:46:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:34,522 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2020-10-27 22:46:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:46:34,525 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-10-27 22:46:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:34,526 INFO L225 Difference]: With dead ends: 231 [2020-10-27 22:46:34,526 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 22:46:34,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=911, Invalid=2749, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 22:46:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 22:46:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-27 22:46:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 22:46:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 146 transitions. [2020-10-27 22:46:34,535 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 146 transitions. Word has length 244 [2020-10-27 22:46:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:34,536 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 146 transitions. [2020-10-27 22:46:34,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 22:46:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 146 transitions. [2020-10-27 22:46:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-27 22:46:34,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:34,539 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:34,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 22:46:34,540 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1928628094, now seen corresponding path program 16 times [2020-10-27 22:46:34,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:34,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420429442] [2020-10-27 22:46:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 22:46:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:46:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-27 22:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:46:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:40,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:40,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:40,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-27 22:46:40,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:46:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 22:46:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:46:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 22:46:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 22:46:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:46:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 651 proven. 4947 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2020-10-27 22:46:43,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420429442] [2020-10-27 22:46:43,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:43,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 22:46:43,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114630783] [2020-10-27 22:46:43,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 22:46:43,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 22:46:43,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1274, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:46:43,069 INFO L87 Difference]: Start difference. First operand 121 states and 146 transitions. Second operand 42 states. [2020-10-27 22:46:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:44,622 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2020-10-27 22:46:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 22:46:44,623 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 255 [2020-10-27 22:46:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:44,624 INFO L225 Difference]: With dead ends: 241 [2020-10-27 22:46:44,624 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 22:46:44,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=998, Invalid=3034, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 22:46:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 22:46:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2020-10-27 22:46:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 22:46:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2020-10-27 22:46:44,635 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 255 [2020-10-27 22:46:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:44,635 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2020-10-27 22:46:44,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 22:46:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2020-10-27 22:46:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 22:46:44,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:44,637 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:44,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 22:46:44,638 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:44,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1303684367, now seen corresponding path program 17 times [2020-10-27 22:46:44,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:44,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193840547] [2020-10-27 22:46:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:46:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 22:46:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:46:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 22:46:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:46:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:46:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-27 22:46:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:46:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 22:46:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-27 22:46:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6937 backedges. 715 proven. 5434 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2020-10-27 22:46:53,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193840547] [2020-10-27 22:46:53,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:53,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 22:46:53,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303263372] [2020-10-27 22:46:53,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 22:46:53,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:53,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 22:46:53,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1401, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 22:46:53,698 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand 44 states. [2020-10-27 22:46:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:55,398 INFO L93 Difference]: Finished difference Result 251 states and 308 transitions. [2020-10-27 22:46:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:46:55,399 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 266 [2020-10-27 22:46:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:55,401 INFO L225 Difference]: With dead ends: 251 [2020-10-27 22:46:55,401 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 22:46:55,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1089, Invalid=3333, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 22:46:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 22:46:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 22:46:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 22:46:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2020-10-27 22:46:55,410 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 266 [2020-10-27 22:46:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:55,410 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2020-10-27 22:46:55,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 22:46:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2020-10-27 22:46:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 22:46:55,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:55,412 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:55,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 22:46:55,413 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:55,413 INFO L82 PathProgramCache]: Analyzing trace with hash 457243878, now seen corresponding path program 18 times [2020-10-27 22:46:55,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:55,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429186612] [2020-10-27 22:46:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:47:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 22:47:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:47:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:00,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:00,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:00,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:02,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:02,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-27 22:47:02,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:47:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:47:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:03,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 22:47:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:47:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 22:47:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 22:47:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7584 backedges. 782 proven. 5944 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-27 22:47:05,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429186612] [2020-10-27 22:47:05,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:05,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 22:47:05,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030896474] [2020-10-27 22:47:05,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 22:47:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 22:47:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1534, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:47:05,844 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand 46 states. [2020-10-27 22:47:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:07,690 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-10-27 22:47:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 22:47:07,691 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 277 [2020-10-27 22:47:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:07,692 INFO L225 Difference]: With dead ends: 261 [2020-10-27 22:47:07,692 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 22:47:07,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1184, Invalid=3646, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:47:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 22:47:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2020-10-27 22:47:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 22:47:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2020-10-27 22:47:07,705 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 277 [2020-10-27 22:47:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:07,706 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2020-10-27 22:47:07,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 22:47:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2020-10-27 22:47:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 22:47:07,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:07,710 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:07,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 22:47:07,710 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -706153301, now seen corresponding path program 19 times [2020-10-27 22:47:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:07,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259065351] [2020-10-27 22:47:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:12,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:12,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 22:47:12,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-27 22:47:12,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:47:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-27 22:47:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:47:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:14,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:47:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:47:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:47:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 22:47:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:17,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:17,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8260 backedges. 852 proven. 6477 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2020-10-27 22:47:17,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259065351] [2020-10-27 22:47:17,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:17,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 22:47:17,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463810563] [2020-10-27 22:47:17,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 22:47:17,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:17,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 22:47:17,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=1673, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:47:17,768 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand 48 states. [2020-10-27 22:47:19,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:19,516 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2020-10-27 22:47:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:47:19,516 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 288 [2020-10-27 22:47:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:19,518 INFO L225 Difference]: With dead ends: 271 [2020-10-27 22:47:19,518 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 22:47:19,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1283, Invalid=3973, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 22:47:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 22:47:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-27 22:47:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 22:47:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2020-10-27 22:47:19,536 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 288 [2020-10-27 22:47:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:19,537 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2020-10-27 22:47:19,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 22:47:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2020-10-27 22:47:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 22:47:19,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:19,539 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:19,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 22:47:19,540 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:19,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1865843018, now seen corresponding path program 20 times [2020-10-27 22:47:19,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:19,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141109432] [2020-10-27 22:47:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 22:47:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:47:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:26,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-27 22:47:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:47:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 22:47:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:47:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:28,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:28,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 22:47:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-27 22:47:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 22:47:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8965 backedges. 925 proven. 7033 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2020-10-27 22:47:30,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141109432] [2020-10-27 22:47:30,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:30,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 22:47:30,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284390904] [2020-10-27 22:47:30,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 22:47:30,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:30,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 22:47:30,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 22:47:30,065 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand 50 states. [2020-10-27 22:47:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:32,162 INFO L93 Difference]: Finished difference Result 281 states and 344 transitions. [2020-10-27 22:47:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 22:47:32,162 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 299 [2020-10-27 22:47:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:32,164 INFO L225 Difference]: With dead ends: 281 [2020-10-27 22:47:32,164 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 22:47:32,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1386, Invalid=4314, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 22:47:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 22:47:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-27 22:47:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 22:47:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 176 transitions. [2020-10-27 22:47:32,175 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 176 transitions. Word has length 299 [2020-10-27 22:47:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:32,176 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 176 transitions. [2020-10-27 22:47:32,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 22:47:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 176 transitions. [2020-10-27 22:47:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 22:47:32,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:32,178 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:32,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 22:47:32,179 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1119888455, now seen corresponding path program 21 times [2020-10-27 22:47:32,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:32,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704896561] [2020-10-27 22:47:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:47:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:47:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 22:47:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 22:47:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 22:47:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 22:47:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking...