/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/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:42:01,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:42:01,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:42:01,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:42:01,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:42:01,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:42:01,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:42:01,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:42:01,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:42:01,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:42:01,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:42:01,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:42:01,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:42:01,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:42:01,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:42:01,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:42:01,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:42:01,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:42:01,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:42:01,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:42:01,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:42:01,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:42:01,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:42:01,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:42:01,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:42:01,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:42:01,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:42:01,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:42:01,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:42:01,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:42:01,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:42:01,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:42:01,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:42:01,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:42:01,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:42:01,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:42:01,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:42:01,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:42:01,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:42:01,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:42:01,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:42:01,146 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 22:42:01,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:42:01,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:42:01,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:42:01,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:42:01,212 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:42:01,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:42:01,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:42:01,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:42:01,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:42:01,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:42:01,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:42:01,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:42:01,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:42:01,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:42:01,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:42:01,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:42:01,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:42:01,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:42:01,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:42:01,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:42:01,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:42:01,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:42:01,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:42:01,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:42:01,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:42:01,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:42:01,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:42:01,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:42:01,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:42:01,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:42:01,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:42:01,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:42:01,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:42:01,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:42:01,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:42:01,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-27 22:42:01,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8329344/c0ed09603b494d17ba42f4d4d9ae4200/FLAGf53bca625 [2020-10-27 22:42:02,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:42:02,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-27 22:42:02,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8329344/c0ed09603b494d17ba42f4d4d9ae4200/FLAGf53bca625 [2020-10-27 22:42:02,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8329344/c0ed09603b494d17ba42f4d4d9ae4200 [2020-10-27 22:42:02,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:42:02,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:42:02,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:42:02,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:42:02,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:42:02,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:42:02" (1/1) ... [2020-10-27 22:42:02,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3696304c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:02, skipping insertion in model container [2020-10-27 22:42:02,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:42:02" (1/1) ... [2020-10-27 22:42:02,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:42:02,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:42:03,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:42:03,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:42:03,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:42:03,115 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:42:03,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03 WrapperNode [2020-10-27 22:42:03,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:42:03,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:42:03,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:42:03,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:42:03,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (1/1) ... [2020-10-27 22:42:03,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:42:03,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:42:03,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:42:03,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:42:03,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (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 22:42:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:42:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:42:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:42:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-27 22:42:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:42:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:42:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:42:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:42:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:42:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:42:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:42:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:42:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:42:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:42:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:42:03,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:42:03,729 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:42:03,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:42:03 BoogieIcfgContainer [2020-10-27 22:42:03,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:42:03,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:42:03,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:42:03,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:42:03,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:42:02" (1/3) ... [2020-10-27 22:42:03,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a4c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:42:03, skipping insertion in model container [2020-10-27 22:42:03,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:42:03" (2/3) ... [2020-10-27 22:42:03,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a4c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:42:03, skipping insertion in model container [2020-10-27 22:42:03,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:42:03" (3/3) ... [2020-10-27 22:42:03,745 INFO L111 eAbstractionObserver]: Analyzing ICFG max60-2.i [2020-10-27 22:42:03,765 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:42:03,772 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:42:03,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:42:03,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:42:03,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:42:03,832 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:42:03,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:42:03,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:42:03,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:42:03,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:42:03,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:42:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 22:42:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:42:03,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:03,863 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 22:42:03,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-27 22:42:03,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:03,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957473509] [2020-10-27 22:42:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:05,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:05,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:42:05,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:42:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-27 22:42:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:42:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:42:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:06,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:06,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:42:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:06,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:06,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:42:06,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:42:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:42:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:06,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:06,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:06,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:42:06,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:06,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:42:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:42:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:42:06,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:42:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:06,095 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 22:42:06,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957473509] [2020-10-27 22:42:06,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:42:06,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:42:06,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997170900] [2020-10-27 22:42:06,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:42:06,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:42:06,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:42:06,126 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 22:42:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:06,277 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-10-27 22:42:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:42:06,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:42:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:06,289 INFO L225 Difference]: With dead ends: 64 [2020-10-27 22:42:06,289 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 22:42:06,293 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 22:42:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 22:42:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-27 22:42:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 22:42:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-27 22:42:06,343 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-27 22:42:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:06,344 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-27 22:42:06,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:42:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-27 22:42:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:42:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:06,347 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 22:42:06,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:42:06,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102031, now seen corresponding path program 1 times [2020-10-27 22:42:06,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:06,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573712416] [2020-10-27 22:42:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:42:08,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:42:08,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1793 [2020-10-27 22:42:08,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:42:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:42:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:08,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:42:08,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:08,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:08,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:42:08,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:42:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:42:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:42:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:42:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:42:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:42:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,286 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 22:42:08,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573712416] [2020-10-27 22:42:08,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:42:08,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:42:08,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246331503] [2020-10-27 22:42:08,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:42:08,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:08,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:42:08,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:42:08,291 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-27 22:42:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:08,489 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2020-10-27 22:42:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:42:08,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:42:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:08,492 INFO L225 Difference]: With dead ends: 55 [2020-10-27 22:42:08,492 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 22:42:08,493 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 22:42:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 22:42:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-27 22:42:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 22:42:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 22:42:08,504 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 22:42:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:08,504 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 22:42:08,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:42:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 22:42:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 22:42:08,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:08,507 INFO L422 BasicCegarLoop]: trace histogram [3, 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 22:42:08,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:42:08,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:08,508 INFO L82 PathProgramCache]: Analyzing trace with hash 548239116, now seen corresponding path program 1 times [2020-10-27 22:42:08,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:08,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727497300] [2020-10-27 22:42:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:12,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:42:12,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-10-27 22:42:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:42:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 22:42:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:42:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 22:42:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:42:12,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:12,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:42:12,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:42:12,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:42:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:42:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 22:42:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:12,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:42:12,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 22:42:12,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:42:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:42:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:42:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:12,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:42:12,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:42:12,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:42:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:42:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 22:42:12,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727497300] [2020-10-27 22:42:12,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:12,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:42:12,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910650423] [2020-10-27 22:42:12,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:42:12,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:42:12,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:42:12,326 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-27 22:42:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:12,597 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-10-27 22:42:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:42:12,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-27 22:42:12,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:12,600 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:42:12,600 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:42:12,601 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 22:42:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:42:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-27 22:42:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 22:42:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-27 22:42:12,609 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 46 [2020-10-27 22:42:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:12,610 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-27 22:42:12,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:42:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-27 22:42:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:42:12,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:12,612 INFO L422 BasicCegarLoop]: trace histogram [6, 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 22:42:12,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:42:12,612 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2055205671, now seen corresponding path program 2 times [2020-10-27 22:42:12,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:12,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720172778] [2020-10-27 22:42:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 22:42:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:42:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:42:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:42:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:42:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:42:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:17,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:17,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:42:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:42:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:17,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:42:17,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:42:17,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:42:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:42:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 22:42:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:42:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:42:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 22:42:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:17,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:42:17,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:17,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 22:42:17,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 22:42:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 22:42:17,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720172778] [2020-10-27 22:42:17,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:17,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:42:17,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148713728] [2020-10-27 22:42:17,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:42:17,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:42:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:42:17,923 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 7 states. [2020-10-27 22:42:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:18,372 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2020-10-27 22:42:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:42:18,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-27 22:42:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:18,375 INFO L225 Difference]: With dead ends: 70 [2020-10-27 22:42:18,375 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:42:18,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:42:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:42:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-27 22:42:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 22:42:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-27 22:42:18,385 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 58 [2020-10-27 22:42:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:18,385 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-27 22:42:18,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:42:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-27 22:42:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 22:42:18,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:18,387 INFO L422 BasicCegarLoop]: trace histogram [9, 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, 1, 1] [2020-10-27 22:42:18,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:42:18,387 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash 167781920, now seen corresponding path program 1 times [2020-10-27 22:42:18,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:18,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264719190] [2020-10-27 22:42:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:18,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:42:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:42:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:23,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:42:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:42:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 22:42:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:42:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:42:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:42:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:42:23,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 22:42:23,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:42:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:42:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:42:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:42:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 22:42:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:42:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 22:42:23,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264719190] [2020-10-27 22:42:23,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:23,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:42:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822811503] [2020-10-27 22:42:23,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:42:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:42:23,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:42:23,793 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 9 states. [2020-10-27 22:42:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:24,288 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2020-10-27 22:42:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:42:24,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 22:42:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:24,290 INFO L225 Difference]: With dead ends: 81 [2020-10-27 22:42:24,291 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 22:42:24,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:42:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 22:42:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-27 22:42:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 22:42:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-27 22:42:24,300 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 72 [2020-10-27 22:42:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:24,301 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-27 22:42:24,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:42:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-27 22:42:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 22:42:24,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:24,303 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 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 22:42:24,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:42:24,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2008005401, now seen corresponding path program 2 times [2020-10-27 22:42:24,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:24,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150893652] [2020-10-27 22:42:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 22:42:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:42:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:42:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:42:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 22:42:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:42:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:42:29,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:42:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 22:42:29,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:42:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:42:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:42:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:42:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:30,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:42:30,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 22:42:30,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:42:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 84 proven. 172 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 22:42:30,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150893652] [2020-10-27 22:42:30,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:30,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:42:30,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390186593] [2020-10-27 22:42:30,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:42:30,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:30,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:42:30,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:42:30,133 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 12 states. [2020-10-27 22:42:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:30,855 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2020-10-27 22:42:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:42:30,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-10-27 22:42:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:30,859 INFO L225 Difference]: With dead ends: 98 [2020-10-27 22:42:30,859 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 22:42:30,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:42:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 22:42:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-10-27 22:42:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 22:42:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-27 22:42:30,882 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 86 [2020-10-27 22:42:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:30,882 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-27 22:42:30,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:42:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-27 22:42:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 22:42:30,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:30,889 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 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 22:42:30,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:42:30,890 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:30,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1852266420, now seen corresponding path program 3 times [2020-10-27 22:42:30,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:30,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12331386] [2020-10-27 22:42:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:35,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:35,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 22:42:35,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:42:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:42:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:42:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:42:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:36,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:42:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 22:42:36,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:42:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:42:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:42:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:42:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:42:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 45 proven. 367 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 22:42:36,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12331386] [2020-10-27 22:42:36,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:36,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:42:36,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405618396] [2020-10-27 22:42:36,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:42:36,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:42:36,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:42:36,429 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 12 states. [2020-10-27 22:42:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:37,115 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2020-10-27 22:42:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:42:37,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-10-27 22:42:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:37,118 INFO L225 Difference]: With dead ends: 101 [2020-10-27 22:42:37,118 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 22:42:37,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:42:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 22:42:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-27 22:42:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:42:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-27 22:42:37,128 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 98 [2020-10-27 22:42:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:37,128 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-27 22:42:37,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:42:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-27 22:42:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:42:37,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:37,130 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 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 22:42:37,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:42:37,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:37,131 INFO L82 PathProgramCache]: Analyzing trace with hash 314844973, now seen corresponding path program 4 times [2020-10-27 22:42:37,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:37,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745180948] [2020-10-27 22:42:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 22:42:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:42:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:42:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 22:42:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:42:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:42:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:42:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:42:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:42,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:42:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 22:42:42,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:42:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:42:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:42:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:42:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 22:42:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 22:42:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 66 proven. 527 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 22:42:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745180948] [2020-10-27 22:42:42,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:42,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 22:42:42,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105067594] [2020-10-27 22:42:42,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:42:42,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:42:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:42:42,735 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 14 states. [2020-10-27 22:42:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:43,591 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2020-10-27 22:42:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:42:43,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-10-27 22:42:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:43,594 INFO L225 Difference]: With dead ends: 113 [2020-10-27 22:42:43,597 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 22:42:43,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:42:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 22:42:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-10-27 22:42:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:42:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-27 22:42:43,612 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 112 [2020-10-27 22:42:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:43,613 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-27 22:42:43,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:42:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-27 22:42:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 22:42:43,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:43,615 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 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 22:42:43,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:42:43,616 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:43,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1903585114, now seen corresponding path program 5 times [2020-10-27 22:42:43,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:43,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706834021] [2020-10-27 22:42:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 22:42:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:42:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:48,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:48,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 22:42:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:42:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:42:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:49,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:42:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:49,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:49,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 22:42:49,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:42:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:42:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:42:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:42:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 91 proven. 717 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 22:42:49,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706834021] [2020-10-27 22:42:49,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:49,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:42:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410801115] [2020-10-27 22:42:49,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:42:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:49,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:42:49,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:42:49,350 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 16 states. [2020-10-27 22:42:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:50,277 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2020-10-27 22:42:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:42:50,283 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 126 [2020-10-27 22:42:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:50,284 INFO L225 Difference]: With dead ends: 125 [2020-10-27 22:42:50,284 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 22:42:50,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:42:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 22:42:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-27 22:42:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 22:42:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-10-27 22:42:50,294 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 126 [2020-10-27 22:42:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:50,294 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-10-27 22:42:50,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:42:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-10-27 22:42:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 22:42:50,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:50,296 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 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 22:42:50,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:42:50,297 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash 475352095, now seen corresponding path program 6 times [2020-10-27 22:42:50,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:50,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568488179] [2020-10-27 22:42:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:42:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:42:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:42:55,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:55,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:55,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:55,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:55,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:55,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:55,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 22:42:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:42:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:42:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:42:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:42:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:42:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:42:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:56,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:56,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 22:42:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 22:42:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 120 proven. 937 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 22:42:56,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568488179] [2020-10-27 22:42:56,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:56,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:42:56,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525769567] [2020-10-27 22:42:56,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:42:56,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:42:56,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:42:56,279 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 18 states. [2020-10-27 22:42:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:57,265 INFO L93 Difference]: Finished difference Result 137 states and 166 transitions. [2020-10-27 22:42:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:42:57,266 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 140 [2020-10-27 22:42:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:57,267 INFO L225 Difference]: With dead ends: 137 [2020-10-27 22:42:57,267 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 22:42:57,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-27 22:42:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 22:42:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-10-27 22:42:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 22:42:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-27 22:42:57,287 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 140 [2020-10-27 22:42:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:57,288 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-27 22:42:57,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:42:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-27 22:42:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 22:42:57,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:57,292 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 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 22:42:57,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:42:57,293 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2104696424, now seen corresponding path program 7 times [2020-10-27 22:42:57,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:57,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111583767] [2020-10-27 22:42:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:02,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:43:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:43:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:43:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 22:43:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:03,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:43:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 22:43:03,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:43:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 153 proven. 1187 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-27 22:43:03,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111583767] [2020-10-27 22:43:03,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:03,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:43:03,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345494024] [2020-10-27 22:43:03,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:43:03,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:43:03,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:43:03,259 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 20 states. [2020-10-27 22:43:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:04,354 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-10-27 22:43:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:43:04,355 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 154 [2020-10-27 22:43:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:04,357 INFO L225 Difference]: With dead ends: 149 [2020-10-27 22:43:04,357 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 22:43:04,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:43:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 22:43:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-27 22:43:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 22:43:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-10-27 22:43:04,367 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 154 [2020-10-27 22:43:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:04,367 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-10-27 22:43:04,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:43:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-10-27 22:43:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 22:43:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:04,370 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 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 22:43:04,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:43:04,370 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 626915601, now seen corresponding path program 8 times [2020-10-27 22:43:04,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:04,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820873269] [2020-10-27 22:43:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:43:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:43:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:43:09,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:43:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:43:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 22:43:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:43:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 190 proven. 1467 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-27 22:43:10,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820873269] [2020-10-27 22:43:10,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:10,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:43:10,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131220559] [2020-10-27 22:43:10,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:43:10,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:10,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:43:10,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:43:10,374 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 22 states. [2020-10-27 22:43:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:11,654 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2020-10-27 22:43:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 22:43:11,656 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 168 [2020-10-27 22:43:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:11,657 INFO L225 Difference]: With dead ends: 161 [2020-10-27 22:43:11,657 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 22:43:11,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:43:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 22:43:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2020-10-27 22:43:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 22:43:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-10-27 22:43:11,671 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 168 [2020-10-27 22:43:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:11,671 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-10-27 22:43:11,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:43:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-10-27 22:43:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 22:43:11,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:11,677 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 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 22:43:11,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:43:11,677 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1732365686, now seen corresponding path program 9 times [2020-10-27 22:43:11,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:11,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690133861] [2020-10-27 22:43:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:43:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 22:43:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:43:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:17,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:43:17,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:43:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:43:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:43:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 231 proven. 1777 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-27 22:43:17,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690133861] [2020-10-27 22:43:17,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:17,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 22:43:17,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111240484] [2020-10-27 22:43:17,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 22:43:17,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:17,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 22:43:17,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:43:17,934 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 24 states. [2020-10-27 22:43:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:19,375 INFO L93 Difference]: Finished difference Result 173 states and 208 transitions. [2020-10-27 22:43:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 22:43:19,376 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 182 [2020-10-27 22:43:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:19,378 INFO L225 Difference]: With dead ends: 173 [2020-10-27 22:43:19,378 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 22:43:19,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:43:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 22:43:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-27 22:43:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 22:43:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-10-27 22:43:19,388 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 182 [2020-10-27 22:43:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:19,389 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-10-27 22:43:19,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 22:43:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-10-27 22:43:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 22:43:19,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:19,391 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 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 22:43:19,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:43:19,392 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1301598717, now seen corresponding path program 10 times [2020-10-27 22:43:19,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:19,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244226450] [2020-10-27 22:43:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:24,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:24,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:43:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:24,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:24,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:43:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:43:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:25,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:25,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 22:43:25,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:43:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:43:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 22:43:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 22:43:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 276 proven. 2117 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-27 22:43:25,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244226450] [2020-10-27 22:43:25,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:25,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 22:43:25,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715481771] [2020-10-27 22:43:25,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 22:43:25,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 22:43:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:43:25,871 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 26 states. [2020-10-27 22:43:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:27,479 INFO L93 Difference]: Finished difference Result 185 states and 222 transitions. [2020-10-27 22:43:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 22:43:27,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 196 [2020-10-27 22:43:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:27,482 INFO L225 Difference]: With dead ends: 185 [2020-10-27 22:43:27,482 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 22:43:27,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:43:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 22:43:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-10-27 22:43:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 22:43:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-10-27 22:43:27,493 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 196 [2020-10-27 22:43:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:27,493 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-10-27 22:43:27,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 22:43:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-10-27 22:43:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 22:43:27,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:27,496 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 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 22:43:27,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:43:27,497 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash 468355964, now seen corresponding path program 11 times [2020-10-27 22:43:27,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:27,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920649990] [2020-10-27 22:43:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:43:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:43:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:43:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:33,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 22:43:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:43:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:43:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 22:43:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 325 proven. 2487 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-27 22:43:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920649990] [2020-10-27 22:43:34,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:34,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 22:43:34,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218181337] [2020-10-27 22:43:34,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 22:43:34,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:34,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 22:43:34,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:43:34,031 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 28 states. [2020-10-27 22:43:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:35,731 INFO L93 Difference]: Finished difference Result 197 states and 236 transitions. [2020-10-27 22:43:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:43:35,732 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 210 [2020-10-27 22:43:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:35,733 INFO L225 Difference]: With dead ends: 197 [2020-10-27 22:43:35,733 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 22:43:35,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=437, Invalid=1285, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:43:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 22:43:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-10-27 22:43:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 22:43:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2020-10-27 22:43:35,743 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 210 [2020-10-27 22:43:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:35,743 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2020-10-27 22:43:35,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 22:43:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2020-10-27 22:43:35,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 22:43:35,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:35,745 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 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 22:43:35,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:43:35,745 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1686760181, now seen corresponding path program 12 times [2020-10-27 22:43:35,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:35,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065351668] [2020-10-27 22:43:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:43:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:41,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:43:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:43:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:42,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:43:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 22:43:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:43:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:43:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:42,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 22:43:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:43:42,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 22:43:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 22:43:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3706 backedges. 378 proven. 2887 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-27 22:43:42,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065351668] [2020-10-27 22:43:42,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:42,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 22:43:42,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931459850] [2020-10-27 22:43:42,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 22:43:42,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 22:43:42,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:43:42,530 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand 30 states. [2020-10-27 22:43:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:44,547 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2020-10-27 22:43:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 22:43:44,549 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 224 [2020-10-27 22:43:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:44,550 INFO L225 Difference]: With dead ends: 209 [2020-10-27 22:43:44,551 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 22:43:44,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=498, Invalid=1482, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 22:43:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 22:43:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2020-10-27 22:43:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 22:43:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-10-27 22:43:44,558 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 224 [2020-10-27 22:43:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:44,559 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-10-27 22:43:44,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 22:43:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-10-27 22:43:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 22:43:44,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:44,561 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 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 22:43:44,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:43:44,561 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:44,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:44,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1822495634, now seen corresponding path program 13 times [2020-10-27 22:43:44,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:44,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412042146] [2020-10-27 22:43:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:43:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 22:43:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:43:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:43:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:43:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:43:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 22:43:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4254 backedges. 435 proven. 3317 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2020-10-27 22:43:51,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412042146] [2020-10-27 22:43:51,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:51,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 22:43:51,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781703203] [2020-10-27 22:43:51,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 22:43:51,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:51,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 22:43:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:43:51,445 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 32 states. [2020-10-27 22:43:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:53,602 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-10-27 22:43:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 22:43:53,605 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 238 [2020-10-27 22:43:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:53,606 INFO L225 Difference]: With dead ends: 221 [2020-10-27 22:43:53,606 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 22:43:53,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=563, Invalid=1693, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:43:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 22:43:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-10-27 22:43:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 22:43:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-10-27 22:43:53,615 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 238 [2020-10-27 22:43:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:53,616 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-10-27 22:43:53,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 22:43:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-10-27 22:43:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 22:43:53,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:53,618 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 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 22:43:53,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:43:53,618 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash 960966631, now seen corresponding path program 14 times [2020-10-27 22:43:53,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:53,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540326948] [2020-10-27 22:43:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 22:43:58,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:43:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:59,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 22:43:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-27 22:43:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:43:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 22:43:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:44:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:44:00,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 22:44:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 22:44:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:00,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 496 proven. 3777 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-27 22:44:00,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540326948] [2020-10-27 22:44:00,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:00,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 22:44:00,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328255521] [2020-10-27 22:44:00,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 22:44:00,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 22:44:00,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:44:00,741 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 34 states. [2020-10-27 22:44:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:02,997 INFO L93 Difference]: Finished difference Result 233 states and 278 transitions. [2020-10-27 22:44:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:44:02,998 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 252 [2020-10-27 22:44:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:02,999 INFO L225 Difference]: With dead ends: 233 [2020-10-27 22:44:02,999 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 22:44:03,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=632, Invalid=1918, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:44:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 22:44:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2020-10-27 22:44:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 22:44:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-10-27 22:44:03,009 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 252 [2020-10-27 22:44:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:03,009 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-10-27 22:44:03,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 22:44:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-10-27 22:44:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 22:44:03,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:03,012 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 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 22:44:03,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:44:03,012 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 48780640, now seen corresponding path program 15 times [2020-10-27 22:44:03,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:03,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966676161] [2020-10-27 22:44:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 22:44:08,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:44:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:44:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 22:44:08,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:44:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:09,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:44:09,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 22:44:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:09,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:44:09,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:09,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 22:44:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 22:44:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 22:44:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 561 proven. 4267 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2020-10-27 22:44:10,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966676161] [2020-10-27 22:44:10,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:10,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 22:44:10,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10292052] [2020-10-27 22:44:10,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 22:44:10,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:10,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 22:44:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:44:10,301 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 36 states. [2020-10-27 22:44:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:12,687 INFO L93 Difference]: Finished difference Result 245 states and 292 transitions. [2020-10-27 22:44:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 22:44:12,688 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 266 [2020-10-27 22:44:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:12,690 INFO L225 Difference]: With dead ends: 245 [2020-10-27 22:44:12,690 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 22:44:12,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=705, Invalid=2157, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 22:44:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 22:44:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2020-10-27 22:44:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 22:44:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-10-27 22:44:12,700 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 266 [2020-10-27 22:44:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:12,700 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-10-27 22:44:12,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 22:44:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-10-27 22:44:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 22:44:12,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:12,703 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 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 22:44:12,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:44:12,703 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:12,704 INFO L82 PathProgramCache]: Analyzing trace with hash -894436135, now seen corresponding path program 16 times [2020-10-27 22:44:12,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:12,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539925536] [2020-10-27 22:44:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 22:44:17,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 22:44:17,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:44:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-27 22:44:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:44:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:44:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:44:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:44:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:44:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:19,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 22:44:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:20,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6126 backedges. 630 proven. 4787 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-27 22:44:20,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539925536] [2020-10-27 22:44:20,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:20,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 22:44:20,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433765469] [2020-10-27 22:44:20,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 22:44:20,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:20,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 22:44:20,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1042, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:44:20,330 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 38 states. [2020-10-27 22:44:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:22,771 INFO L93 Difference]: Finished difference Result 257 states and 306 transitions. [2020-10-27 22:44:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 22:44:22,772 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 280 [2020-10-27 22:44:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:22,773 INFO L225 Difference]: With dead ends: 257 [2020-10-27 22:44:22,774 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 22:44:22,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=782, Invalid=2410, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 22:44:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 22:44:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2020-10-27 22:44:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 22:44:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-10-27 22:44:22,783 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 280 [2020-10-27 22:44:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:22,784 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-10-27 22:44:22,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 22:44:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-10-27 22:44:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-27 22:44:22,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:22,786 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 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 22:44:22,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:44:22,786 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:22,787 INFO L82 PathProgramCache]: Analyzing trace with hash 718521938, now seen corresponding path program 17 times [2020-10-27 22:44:22,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:22,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340010765] [2020-10-27 22:44:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:44:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-27 22:44:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:44:27,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 22:44:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:29,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 22:44:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:44:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 22:44:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-27 22:44:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:30,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:30,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:30,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6826 backedges. 703 proven. 5337 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2020-10-27 22:44:30,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340010765] [2020-10-27 22:44:30,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:30,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 22:44:30,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120738585] [2020-10-27 22:44:30,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 22:44:30,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 22:44:30,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:44:30,752 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 40 states. [2020-10-27 22:44:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:33,587 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2020-10-27 22:44:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:44:33,588 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 294 [2020-10-27 22:44:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:33,589 INFO L225 Difference]: With dead ends: 269 [2020-10-27 22:44:33,589 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 22:44:33,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=863, Invalid=2677, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 22:44:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 22:44:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2020-10-27 22:44:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 22:44:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-10-27 22:44:33,599 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 294 [2020-10-27 22:44:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:33,600 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-10-27 22:44:33,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 22:44:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-10-27 22:44:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 22:44:33,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:33,602 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 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 22:44:33,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 22:44:33,603 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:33,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1890496053, now seen corresponding path program 18 times [2020-10-27 22:44:33,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:33,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418463104] [2020-10-27 22:44:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:38,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 22:44:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:44:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:39,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:39,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 22:44:39,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-27 22:44:39,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:44:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 22:44:39,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:44:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 22:44:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 22:44:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 780 proven. 5917 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2020-10-27 22:44:42,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418463104] [2020-10-27 22:44:42,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:42,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 22:44:42,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405882146] [2020-10-27 22:44:42,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 22:44:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 22:44:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:44:42,018 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 42 states. [2020-10-27 22:44:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:45,156 INFO L93 Difference]: Finished difference Result 281 states and 334 transitions. [2020-10-27 22:44:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 22:44:45,159 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 308 [2020-10-27 22:44:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:45,161 INFO L225 Difference]: With dead ends: 281 [2020-10-27 22:44:45,161 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 22:44:45,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=948, Invalid=2958, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 22:44:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 22:44:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-10-27 22:44:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 22:44:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-10-27 22:44:45,172 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 308 [2020-10-27 22:44:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:45,172 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-10-27 22:44:45,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 22:44:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-10-27 22:44:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-27 22:44:45,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:45,174 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 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 22:44:45,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 22:44:45,175 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash -940687548, now seen corresponding path program 19 times [2020-10-27 22:44:45,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:45,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109366630] [2020-10-27 22:44:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:44:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 22:44:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:44:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:50,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 22:44:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 22:44:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:53,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:44:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 22:44:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:53,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 22:44:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8340 backedges. 861 proven. 6527 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-27 22:44:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109366630] [2020-10-27 22:44:54,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:54,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 22:44:54,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646067741] [2020-10-27 22:44:54,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 22:44:54,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:54,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 22:44:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1405, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 22:44:54,183 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 44 states. [2020-10-27 22:44:57,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:57,473 INFO L93 Difference]: Finished difference Result 293 states and 348 transitions. [2020-10-27 22:44:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:44:57,475 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 322 [2020-10-27 22:44:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:57,476 INFO L225 Difference]: With dead ends: 293 [2020-10-27 22:44:57,477 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 22:44:57,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1037, Invalid=3253, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 22:44:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 22:44:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2020-10-27 22:44:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-27 22:44:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 178 transitions. [2020-10-27 22:44:57,486 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 178 transitions. Word has length 322 [2020-10-27 22:44:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:57,486 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 178 transitions. [2020-10-27 22:44:57,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 22:44:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 178 transitions. [2020-10-27 22:44:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 22:44:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:57,489 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 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 22:44:57,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 22:44:57,489 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 439889597, now seen corresponding path program 20 times [2020-10-27 22:44:57,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:57,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823337212] [2020-10-27 22:44:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:02,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-27 22:45:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:45:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 22:45:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:45:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-27 22:45:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:45:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:03,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:03,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:45:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:03,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 22:45:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:45:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 22:45:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 22:45:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:06,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9154 backedges. 946 proven. 7167 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2020-10-27 22:45:06,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823337212] [2020-10-27 22:45:06,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:06,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 22:45:06,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602998170] [2020-10-27 22:45:06,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 22:45:06,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 22:45:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1538, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:45:06,391 INFO L87 Difference]: Start difference. First operand 152 states and 178 transitions. Second operand 46 states. [2020-10-27 22:45:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:09,938 INFO L93 Difference]: Finished difference Result 305 states and 362 transitions. [2020-10-27 22:45:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 22:45:09,939 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 336 [2020-10-27 22:45:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:09,941 INFO L225 Difference]: With dead ends: 305 [2020-10-27 22:45:09,941 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 22:45:09,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 22:45:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 22:45:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2020-10-27 22:45:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-27 22:45:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 185 transitions. [2020-10-27 22:45:09,952 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 185 transitions. Word has length 336 [2020-10-27 22:45:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:09,952 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 185 transitions. [2020-10-27 22:45:09,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 22:45:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 185 transitions. [2020-10-27 22:45:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-27 22:45:09,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:09,955 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 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 22:45:09,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 22:45:09,955 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -746274762, now seen corresponding path program 21 times [2020-10-27 22:45:09,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:09,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447982397] [2020-10-27 22:45:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 22:45:15,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:45:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:45:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 22:45:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 22:45:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 22:45:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:18,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 22:45:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10006 backedges. 1035 proven. 7837 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2020-10-27 22:45:19,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447982397] [2020-10-27 22:45:19,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:19,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 22:45:19,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507053091] [2020-10-27 22:45:19,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 22:45:19,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:19,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 22:45:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1677, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:45:19,173 INFO L87 Difference]: Start difference. First operand 158 states and 185 transitions. Second operand 48 states. [2020-10-27 22:45:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:22,671 INFO L93 Difference]: Finished difference Result 317 states and 376 transitions. [2020-10-27 22:45:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:45:22,672 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 350 [2020-10-27 22:45:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:22,674 INFO L225 Difference]: With dead ends: 317 [2020-10-27 22:45:22,674 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 22:45:22,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1227, Invalid=3885, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 22:45:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 22:45:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2020-10-27 22:45:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 22:45:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2020-10-27 22:45:22,686 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 350 [2020-10-27 22:45:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:22,687 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2020-10-27 22:45:22,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 22:45:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2020-10-27 22:45:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-27 22:45:22,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:22,690 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 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 22:45:22,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 22:45:22,690 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1525781423, now seen corresponding path program 22 times [2020-10-27 22:45:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:22,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51890045] [2020-10-27 22:45:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5528 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-10-27 22:45:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:45:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,819 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 18 [2020-10-27 22:45:31,080 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 18 [2020-10-27 22:45:31,356 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-10-27 22:45:31,658 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-10-27 22:45:31,973 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 18 [2020-10-27 22:45:32,303 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 13 [2020-10-27 22:45:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:33,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:33,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:45:33,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-27 22:45:33,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:45:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 22:45:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 22:45:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 22:45:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:36,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 22:45:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:45:38,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2603 [2020-10-27 22:45:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:45:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 22:45:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10896 backedges. 1150 proven. 8653 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-27 22:45:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51890045] [2020-10-27 22:45:39,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:39,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 22:45:39,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970856285] [2020-10-27 22:45:39,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 22:45:39,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:39,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 22:45:39,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=2526, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 22:45:39,919 INFO L87 Difference]: Start difference. First operand 164 states and 192 transitions. Second operand 57 states.