/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/eca-rers2012/Problem11_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:10:47,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:10:47,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:10:47,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:10:47,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:10:47,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:10:47,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:10:47,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:10:47,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:10:47,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:10:47,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:10:47,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:10:47,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:10:47,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:10:47,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:10:47,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:10:47,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:10:47,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:10:47,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:10:47,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:10:47,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:10:47,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:10:47,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:10:47,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:10:47,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:10:47,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:10:47,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:10:47,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:10:47,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:10:47,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:10:47,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:10:47,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:10:47,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:10:47,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:10:47,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:10:47,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:10:47,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:10:47,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:10:47,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:10:47,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:10:47,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:10:47,163 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 [2020-10-28 12:10:47,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:10:47,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:10:47,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:10:47,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:10:47,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:10:47,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:10:47,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:10:47,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:10:47,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:10:47,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:10:47,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:10:47,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:10:47,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:10:47,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:10:47,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:10:47,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:10:47,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:10:47,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:10:47,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:10:47,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:10:47,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:10:47,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:10:47,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:10:47,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:10:47,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:10:47,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:10:47,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:10:47,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:10:47,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:10:47,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:10:47,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:10:47,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:10:47,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:10:47,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:10:47,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:10:47,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53.c [2020-10-28 12:10:47,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44f5d64f/d7281062d37e446b88fa41076a06adfd/FLAG929868075 [2020-10-28 12:10:48,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:10:48,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label53.c [2020-10-28 12:10:48,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44f5d64f/d7281062d37e446b88fa41076a06adfd/FLAG929868075 [2020-10-28 12:10:48,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44f5d64f/d7281062d37e446b88fa41076a06adfd [2020-10-28 12:10:48,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:10:48,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:10:48,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:10:48,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:10:48,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:10:48,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:10:48" (1/1) ... [2020-10-28 12:10:48,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c74a02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:48, skipping insertion in model container [2020-10-28 12:10:48,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:10:48" (1/1) ... [2020-10-28 12:10:48,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:10:48,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:10:49,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:10:49,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:10:49,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:10:49,838 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:10:49,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49 WrapperNode [2020-10-28 12:10:49,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:10:49,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:10:49,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:10:49,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:10:49,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:49,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:49,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:49,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:49,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:50,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:50,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (1/1) ... [2020-10-28 12:10:50,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:10:50,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:10:50,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:10:50,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:10:50,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (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 [2020-10-28 12:10:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:10:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:10:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:10:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:10:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:10:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:10:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:10:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:10:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:10:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:10:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:10:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:10:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:10:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:10:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:10:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:10:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:10:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:10:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:10:52,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:10:52,202 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:10:52,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:10:52 BoogieIcfgContainer [2020-10-28 12:10:52,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:10:52,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:10:52,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:10:52,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:10:52,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:10:48" (1/3) ... [2020-10-28 12:10:52,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce93696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:10:52, skipping insertion in model container [2020-10-28 12:10:52,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:10:49" (2/3) ... [2020-10-28 12:10:52,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce93696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:10:52, skipping insertion in model container [2020-10-28 12:10:52,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:10:52" (3/3) ... [2020-10-28 12:10:52,215 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label53.c [2020-10-28 12:10:52,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:10:52,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:10:52,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:10:52,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:10:52,284 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:10:52,284 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:10:52,284 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:10:52,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:10:52,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:10:52,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:10:52,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:10:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:10:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 12:10:52,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:52,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:52,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:52,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1093185656, now seen corresponding path program 1 times [2020-10-28 12:10:52,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:52,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892157061] [2020-10-28 12:10:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:53,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:53,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 12:10:53,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-28 12:10:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:53,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 12:10:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:10:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:53,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:53,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:10:53,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:53,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:53,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892157061] [2020-10-28 12:10:53,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:53,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:10:53,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393724840] [2020-10-28 12:10:53,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:10:53,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:10:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:10:53,493 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:10:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:56,789 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-28 12:10:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:10:56,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 12:10:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:56,809 INFO L225 Difference]: With dead ends: 811 [2020-10-28 12:10:56,810 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:10:56,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:10:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:10:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-28 12:10:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-28 12:10:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-28 12:10:56,916 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 54 [2020-10-28 12:10:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:56,917 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-28 12:10:56,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:10:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-28 12:10:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 12:10:56,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:56,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:56,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:10:56,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1239417524, now seen corresponding path program 1 times [2020-10-28 12:10:56,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:56,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324689574] [2020-10-28 12:10:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:59,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:10:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-28 12:10:59,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:59,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:10:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:10:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:59,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:10:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:10:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:10:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:59,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:10:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 12:10:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:59,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:10:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:59,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324689574] [2020-10-28 12:10:59,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:10:59,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:10:59,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649641854] [2020-10-28 12:10:59,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:10:59,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:59,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:10:59,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:10:59,707 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 8 states. [2020-10-28 12:11:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:04,451 INFO L93 Difference]: Finished difference Result 1663 states and 2474 transitions. [2020-10-28 12:11:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:11:04,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-28 12:11:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:04,463 INFO L225 Difference]: With dead ends: 1663 [2020-10-28 12:11:04,464 INFO L226 Difference]: Without dead ends: 1240 [2020-10-28 12:11:04,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:11:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-28 12:11:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1204. [2020-10-28 12:11:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-28 12:11:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1687 transitions. [2020-10-28 12:11:04,593 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1687 transitions. Word has length 126 [2020-10-28 12:11:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:04,594 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1687 transitions. [2020-10-28 12:11:04,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:11:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1687 transitions. [2020-10-28 12:11:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 12:11:04,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:04,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:04,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:11:04,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1533024540, now seen corresponding path program 1 times [2020-10-28 12:11:04,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:04,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111851501] [2020-10-28 12:11:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:11:06,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-28 12:11:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:11:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:06,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:11:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:06,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:06,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:11:06,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 12:11:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:06,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:11:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:06,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111851501] [2020-10-28 12:11:06,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:11:06,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:11:06,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019802372] [2020-10-28 12:11:06,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:06,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:06,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:06,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:06,940 INFO L87 Difference]: Start difference. First operand 1204 states and 1687 transitions. Second operand 7 states. [2020-10-28 12:11:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:10,288 INFO L93 Difference]: Finished difference Result 3414 states and 4971 transitions. [2020-10-28 12:11:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:11:10,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-28 12:11:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:10,305 INFO L225 Difference]: With dead ends: 3414 [2020-10-28 12:11:10,305 INFO L226 Difference]: Without dead ends: 2216 [2020-10-28 12:11:10,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2020-10-28 12:11:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1990. [2020-10-28 12:11:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-28 12:11:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2623 transitions. [2020-10-28 12:11:10,386 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2623 transitions. Word has length 151 [2020-10-28 12:11:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:10,387 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2623 transitions. [2020-10-28 12:11:10,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2623 transitions. [2020-10-28 12:11:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 12:11:10,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:10,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:10,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:11:10,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:10,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1213310945, now seen corresponding path program 1 times [2020-10-28 12:11:10,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:10,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468710275] [2020-10-28 12:11:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:12,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:11:12,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-10-28 12:11:12,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:12,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:11:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:11:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:11:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:12,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:11:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:12,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:12,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:11:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468710275] [2020-10-28 12:11:13,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:11:13,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:11:13,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692987952] [2020-10-28 12:11:13,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:13,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:13,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:13,216 INFO L87 Difference]: Start difference. First operand 1990 states and 2623 transitions. Second operand 7 states. [2020-10-28 12:11:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:16,140 INFO L93 Difference]: Finished difference Result 4389 states and 5753 transitions. [2020-10-28 12:11:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:11:16,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-28 12:11:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:16,156 INFO L225 Difference]: With dead ends: 4389 [2020-10-28 12:11:16,156 INFO L226 Difference]: Without dead ends: 2405 [2020-10-28 12:11:16,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:11:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2020-10-28 12:11:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2390. [2020-10-28 12:11:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-10-28 12:11:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3092 transitions. [2020-10-28 12:11:16,244 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3092 transitions. Word has length 164 [2020-10-28 12:11:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:16,245 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 3092 transitions. [2020-10-28 12:11:16,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3092 transitions. [2020-10-28 12:11:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 12:11:16,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:16,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:16,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:11:16,252 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash -629895686, now seen corresponding path program 1 times [2020-10-28 12:11:16,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:16,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286928350] [2020-10-28 12:11:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 12:11:19,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:11:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2795 [2020-10-28 12:11:19,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:19,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:11:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:11:19,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:19,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:11:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 12:11:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:19,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:11:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 121 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:11:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286928350] [2020-10-28 12:11:19,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:19,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:11:19,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814508168] [2020-10-28 12:11:19,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:11:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:19,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:11:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:19,834 INFO L87 Difference]: Start difference. First operand 2390 states and 3092 transitions. Second operand 6 states. [2020-10-28 12:11:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:23,024 INFO L93 Difference]: Finished difference Result 5405 states and 7270 transitions. [2020-10-28 12:11:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:11:23,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-28 12:11:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:23,045 INFO L225 Difference]: With dead ends: 5405 [2020-10-28 12:11:23,045 INFO L226 Difference]: Without dead ends: 3399 [2020-10-28 12:11:23,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:11:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2020-10-28 12:11:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3377. [2020-10-28 12:11:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3377 states. [2020-10-28 12:11:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4428 transitions. [2020-10-28 12:11:23,168 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4428 transitions. Word has length 250 [2020-10-28 12:11:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:23,169 INFO L481 AbstractCegarLoop]: Abstraction has 3377 states and 4428 transitions. [2020-10-28 12:11:23,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:11:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4428 transitions. [2020-10-28 12:11:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 12:11:23,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:23,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:23,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:11:23,177 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:23,178 INFO L82 PathProgramCache]: Analyzing trace with hash 118013611, now seen corresponding path program 1 times [2020-10-28 12:11:23,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:23,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344378969] [2020-10-28 12:11:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 12:11:25,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:25,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-10-28 12:11:25,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:11:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:11:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:25,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:11:25,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:25,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:11:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:25,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:25,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:11:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:11:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344378969] [2020-10-28 12:11:25,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:25,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:25,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162720864] [2020-10-28 12:11:25,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:25,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:25,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:25,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:25,896 INFO L87 Difference]: Start difference. First operand 3377 states and 4428 transitions. Second operand 7 states. [2020-10-28 12:11:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:29,599 INFO L93 Difference]: Finished difference Result 7583 states and 10235 transitions. [2020-10-28 12:11:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:29,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-28 12:11:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:29,629 INFO L225 Difference]: With dead ends: 7583 [2020-10-28 12:11:29,629 INFO L226 Difference]: Without dead ends: 4590 [2020-10-28 12:11:29,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2020-10-28 12:11:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 4570. [2020-10-28 12:11:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4570 states. [2020-10-28 12:11:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 5982 transitions. [2020-10-28 12:11:29,809 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 5982 transitions. Word has length 255 [2020-10-28 12:11:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:29,810 INFO L481 AbstractCegarLoop]: Abstraction has 4570 states and 5982 transitions. [2020-10-28 12:11:29,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 5982 transitions. [2020-10-28 12:11:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-28 12:11:29,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:29,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:29,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:11:29,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash -165199177, now seen corresponding path program 1 times [2020-10-28 12:11:29,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:29,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224059485] [2020-10-28 12:11:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:31,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:31,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-28 12:11:31,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:11:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:32,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:11:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:11:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:11:32,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:11:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:32,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:32,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:11:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 12:11:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:32,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:33,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224059485] [2020-10-28 12:11:33,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:33,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:33,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95474638] [2020-10-28 12:11:33,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:33,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:33,167 INFO L87 Difference]: Start difference. First operand 4570 states and 5982 transitions. Second operand 7 states. [2020-10-28 12:11:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:36,640 INFO L93 Difference]: Finished difference Result 8779 states and 11594 transitions. [2020-10-28 12:11:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:36,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-28 12:11:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:36,673 INFO L225 Difference]: With dead ends: 8779 [2020-10-28 12:11:36,673 INFO L226 Difference]: Without dead ends: 4593 [2020-10-28 12:11:36,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:11:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2020-10-28 12:11:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4584. [2020-10-28 12:11:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4584 states. [2020-10-28 12:11:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 5995 transitions. [2020-10-28 12:11:36,867 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 5995 transitions. Word has length 280 [2020-10-28 12:11:36,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:36,868 INFO L481 AbstractCegarLoop]: Abstraction has 4584 states and 5995 transitions. [2020-10-28 12:11:36,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 5995 transitions. [2020-10-28 12:11:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-28 12:11:36,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:36,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:36,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:11:36,878 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash 518754426, now seen corresponding path program 1 times [2020-10-28 12:11:36,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:36,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534167581] [2020-10-28 12:11:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:37,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 12:11:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-28 12:11:37,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:37,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:11:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 12:11:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:38,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:38,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:38,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:38,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:38,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:38,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:38,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:11:38,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:11:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:38,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:11:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 12:11:38,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534167581] [2020-10-28 12:11:38,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:38,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:38,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011742112] [2020-10-28 12:11:38,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:38,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:38,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:38,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:38,496 INFO L87 Difference]: Start difference. First operand 4584 states and 5995 transitions. Second operand 5 states. [2020-10-28 12:11:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:41,622 INFO L93 Difference]: Finished difference Result 9566 states and 12720 transitions. [2020-10-28 12:11:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:41,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-28 12:11:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:41,655 INFO L225 Difference]: With dead ends: 9566 [2020-10-28 12:11:41,655 INFO L226 Difference]: Without dead ends: 5366 [2020-10-28 12:11:41,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2020-10-28 12:11:41,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 4975. [2020-10-28 12:11:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-10-28 12:11:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 6468 transitions. [2020-10-28 12:11:41,831 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 6468 transitions. Word has length 281 [2020-10-28 12:11:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:41,831 INFO L481 AbstractCegarLoop]: Abstraction has 4975 states and 6468 transitions. [2020-10-28 12:11:41,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 6468 transitions. [2020-10-28 12:11:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-28 12:11:41,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:41,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:41,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:11:41,841 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:41,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1377776738, now seen corresponding path program 1 times [2020-10-28 12:11:41,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:41,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390582041] [2020-10-28 12:11:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 12:11:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:11:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:11:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:45,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:11:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:11:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 12:11:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:11:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:11:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 121 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:11:45,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390582041] [2020-10-28 12:11:45,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:45,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:11:45,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545851996] [2020-10-28 12:11:45,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:11:45,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:45,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:11:45,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:45,854 INFO L87 Difference]: Start difference. First operand 4975 states and 6468 transitions. Second operand 6 states. [2020-10-28 12:11:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:49,141 INFO L93 Difference]: Finished difference Result 10420 states and 14328 transitions. [2020-10-28 12:11:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:11:49,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 281 [2020-10-28 12:11:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:49,185 INFO L225 Difference]: With dead ends: 10420 [2020-10-28 12:11:49,185 INFO L226 Difference]: Without dead ends: 5829 [2020-10-28 12:11:49,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:11:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2020-10-28 12:11:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5369. [2020-10-28 12:11:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5369 states. [2020-10-28 12:11:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 6976 transitions. [2020-10-28 12:11:49,421 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 6976 transitions. Word has length 281 [2020-10-28 12:11:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:49,422 INFO L481 AbstractCegarLoop]: Abstraction has 5369 states and 6976 transitions. [2020-10-28 12:11:49,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:11:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 6976 transitions. [2020-10-28 12:11:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-28 12:11:49,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:49,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:49,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:11:49,433 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash -171382493, now seen corresponding path program 1 times [2020-10-28 12:11:49,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:49,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017891020] [2020-10-28 12:11:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:51,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:11:51,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:11:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:11:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:11:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:52,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:11:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017891020] [2020-10-28 12:11:52,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:52,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:52,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851142157] [2020-10-28 12:11:52,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:52,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:52,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:52,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:52,321 INFO L87 Difference]: Start difference. First operand 5369 states and 6976 transitions. Second operand 7 states. [2020-10-28 12:11:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:55,700 INFO L93 Difference]: Finished difference Result 10954 states and 14370 transitions. [2020-10-28 12:11:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:11:55,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-28 12:11:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:55,726 INFO L225 Difference]: With dead ends: 10954 [2020-10-28 12:11:55,727 INFO L226 Difference]: Without dead ends: 5969 [2020-10-28 12:11:55,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:11:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2020-10-28 12:11:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 5947. [2020-10-28 12:11:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5947 states. [2020-10-28 12:11:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 7717 transitions. [2020-10-28 12:11:55,883 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 7717 transitions. Word has length 290 [2020-10-28 12:11:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:55,884 INFO L481 AbstractCegarLoop]: Abstraction has 5947 states and 7717 transitions. [2020-10-28 12:11:55,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 7717 transitions. [2020-10-28 12:11:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-28 12:11:55,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:55,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:55,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:11:55,894 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 186976339, now seen corresponding path program 1 times [2020-10-28 12:11:55,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:55,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708980006] [2020-10-28 12:11:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:11:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:11:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:57,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:57,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:57,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:57,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:57,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:11:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:58,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:58,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:11:58,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:11:58,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:58,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:11:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:58,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708980006] [2020-10-28 12:11:58,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:58,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:58,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805054872] [2020-10-28 12:11:58,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:58,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:58,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:58,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:58,189 INFO L87 Difference]: Start difference. First operand 5947 states and 7717 transitions. Second operand 7 states. [2020-10-28 12:12:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:02,816 INFO L93 Difference]: Finished difference Result 12857 states and 17074 transitions. [2020-10-28 12:12:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:02,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-28 12:12:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:02,846 INFO L225 Difference]: With dead ends: 12857 [2020-10-28 12:12:02,846 INFO L226 Difference]: Without dead ends: 7294 [2020-10-28 12:12:02,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2020-10-28 12:12:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7284. [2020-10-28 12:12:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7284 states. [2020-10-28 12:12:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 9389 transitions. [2020-10-28 12:12:03,061 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 9389 transitions. Word has length 298 [2020-10-28 12:12:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:03,062 INFO L481 AbstractCegarLoop]: Abstraction has 7284 states and 9389 transitions. [2020-10-28 12:12:03,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 9389 transitions. [2020-10-28 12:12:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 12:12:03,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:03,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:03,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:12:03,073 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:03,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1732459745, now seen corresponding path program 1 times [2020-10-28 12:12:03,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:03,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279363184] [2020-10-28 12:12:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:12:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:04,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:04,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:04,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:12:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:04,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:05,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279363184] [2020-10-28 12:12:05,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:05,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:05,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859460368] [2020-10-28 12:12:05,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:05,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:05,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:05,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:05,260 INFO L87 Difference]: Start difference. First operand 7284 states and 9389 transitions. Second operand 7 states. [2020-10-28 12:12:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:08,951 INFO L93 Difference]: Finished difference Result 15364 states and 19816 transitions. [2020-10-28 12:12:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:08,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-28 12:12:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:08,983 INFO L225 Difference]: With dead ends: 15364 [2020-10-28 12:12:08,984 INFO L226 Difference]: Without dead ends: 8270 [2020-10-28 12:12:09,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8270 states. [2020-10-28 12:12:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8270 to 8252. [2020-10-28 12:12:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8252 states. [2020-10-28 12:12:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8252 states to 8252 states and 10495 transitions. [2020-10-28 12:12:09,187 INFO L78 Accepts]: Start accepts. Automaton has 8252 states and 10495 transitions. Word has length 311 [2020-10-28 12:12:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:09,188 INFO L481 AbstractCegarLoop]: Abstraction has 8252 states and 10495 transitions. [2020-10-28 12:12:09,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8252 states and 10495 transitions. [2020-10-28 12:12:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-28 12:12:09,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:09,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:09,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:12:09,201 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1961768592, now seen corresponding path program 1 times [2020-10-28 12:12:09,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:09,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087058491] [2020-10-28 12:12:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-28 12:12:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:10,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:10,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:10,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 12:12:11,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:12:11,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:12:11,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-28 12:12:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:12:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087058491] [2020-10-28 12:12:11,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:11,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714864686] [2020-10-28 12:12:11,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:11,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:11,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:11,773 INFO L87 Difference]: Start difference. First operand 8252 states and 10495 transitions. Second operand 7 states. [2020-10-28 12:12:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:15,195 INFO L93 Difference]: Finished difference Result 18413 states and 23423 transitions. [2020-10-28 12:12:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:12:15,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-28 12:12:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:15,234 INFO L225 Difference]: With dead ends: 18413 [2020-10-28 12:12:15,234 INFO L226 Difference]: Without dead ends: 10545 [2020-10-28 12:12:15,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:15,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2020-10-28 12:12:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 10340. [2020-10-28 12:12:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10340 states. [2020-10-28 12:12:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10340 states to 10340 states and 12936 transitions. [2020-10-28 12:12:15,563 INFO L78 Accepts]: Start accepts. Automaton has 10340 states and 12936 transitions. Word has length 349 [2020-10-28 12:12:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:15,564 INFO L481 AbstractCegarLoop]: Abstraction has 10340 states and 12936 transitions. [2020-10-28 12:12:15,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10340 states and 12936 transitions. [2020-10-28 12:12:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-28 12:12:15,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:15,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:15,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:12:15,582 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1440178211, now seen corresponding path program 1 times [2020-10-28 12:12:15,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538248959] [2020-10-28 12:12:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:12:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-28 12:12:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:17,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:17,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:12:17,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:17,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:12:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:12:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:12:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:18,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-28 12:12:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:12:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:12:18,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538248959] [2020-10-28 12:12:18,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:12:18,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:12:18,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562217497] [2020-10-28 12:12:18,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:12:18,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:12:18,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:18,450 INFO L87 Difference]: Start difference. First operand 10340 states and 12936 transitions. Second operand 6 states. [2020-10-28 12:12:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:20,446 INFO L93 Difference]: Finished difference Result 20295 states and 25458 transitions. [2020-10-28 12:12:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:20,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 360 [2020-10-28 12:12:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:20,475 INFO L225 Difference]: With dead ends: 20295 [2020-10-28 12:12:20,476 INFO L226 Difference]: Without dead ends: 10339 [2020-10-28 12:12:20,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10339 states. [2020-10-28 12:12:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10339 to 10327. [2020-10-28 12:12:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10327 states. [2020-10-28 12:12:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10327 states to 10327 states and 12898 transitions. [2020-10-28 12:12:20,697 INFO L78 Accepts]: Start accepts. Automaton has 10327 states and 12898 transitions. Word has length 360 [2020-10-28 12:12:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:20,698 INFO L481 AbstractCegarLoop]: Abstraction has 10327 states and 12898 transitions. [2020-10-28 12:12:20,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:12:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10327 states and 12898 transitions. [2020-10-28 12:12:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-28 12:12:20,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:20,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:20,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:12:20,716 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1294921691, now seen corresponding path program 1 times [2020-10-28 12:12:20,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:20,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773791960] [2020-10-28 12:12:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:23,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:23,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:12:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:12:23,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:23,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:12:24,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773791960] [2020-10-28 12:12:24,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:24,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:24,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376853139] [2020-10-28 12:12:24,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:24,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:24,090 INFO L87 Difference]: Start difference. First operand 10327 states and 12898 transitions. Second operand 7 states. [2020-10-28 12:12:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:28,793 INFO L93 Difference]: Finished difference Result 24438 states and 30262 transitions. [2020-10-28 12:12:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:28,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-28 12:12:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:28,835 INFO L225 Difference]: With dead ends: 24438 [2020-10-28 12:12:28,836 INFO L226 Difference]: Without dead ends: 13157 [2020-10-28 12:12:28,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13157 states. [2020-10-28 12:12:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13157 to 12389. [2020-10-28 12:12:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12389 states. [2020-10-28 12:12:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12389 states to 12389 states and 15170 transitions. [2020-10-28 12:12:29,120 INFO L78 Accepts]: Start accepts. Automaton has 12389 states and 15170 transitions. Word has length 364 [2020-10-28 12:12:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:29,121 INFO L481 AbstractCegarLoop]: Abstraction has 12389 states and 15170 transitions. [2020-10-28 12:12:29,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12389 states and 15170 transitions. [2020-10-28 12:12:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 12:12:29,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:29,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:29,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:12:29,136 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:29,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -766753977, now seen corresponding path program 1 times [2020-10-28 12:12:29,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:29,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848031097] [2020-10-28 12:12:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-28 12:12:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:12:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:12:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:12:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848031097] [2020-10-28 12:12:31,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:31,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:31,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102705585] [2020-10-28 12:12:31,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:31,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:31,530 INFO L87 Difference]: Start difference. First operand 12389 states and 15170 transitions. Second operand 7 states. [2020-10-28 12:12:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:34,690 INFO L93 Difference]: Finished difference Result 24434 states and 29919 transitions. [2020-10-28 12:12:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:12:34,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-28 12:12:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:34,730 INFO L225 Difference]: With dead ends: 24434 [2020-10-28 12:12:34,730 INFO L226 Difference]: Without dead ends: 14497 [2020-10-28 12:12:34,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14497 states. [2020-10-28 12:12:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14497 to 12964. [2020-10-28 12:12:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12964 states. [2020-10-28 12:12:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 15811 transitions. [2020-10-28 12:12:35,027 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 15811 transitions. Word has length 369 [2020-10-28 12:12:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:35,027 INFO L481 AbstractCegarLoop]: Abstraction has 12964 states and 15811 transitions. [2020-10-28 12:12:35,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 15811 transitions. [2020-10-28 12:12:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-28 12:12:35,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:35,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:35,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:12:35,043 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1696873373, now seen corresponding path program 1 times [2020-10-28 12:12:35,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:35,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028496153] [2020-10-28 12:12:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2164 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:37,541 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:12:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:37,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:37,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:12:37,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:12:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:37,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:12:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:12:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:12:38,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028496153] [2020-10-28 12:12:38,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:38,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:38,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963368189] [2020-10-28 12:12:38,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:38,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:38,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:38,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:38,231 INFO L87 Difference]: Start difference. First operand 12964 states and 15811 transitions. Second operand 7 states. [2020-10-28 12:12:43,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:43,347 INFO L93 Difference]: Finished difference Result 26504 states and 32100 transitions. [2020-10-28 12:12:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:43,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-28 12:12:43,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:43,377 INFO L225 Difference]: With dead ends: 26504 [2020-10-28 12:12:43,378 INFO L226 Difference]: Without dead ends: 13500 [2020-10-28 12:12:43,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2020-10-28 12:12:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 12354. [2020-10-28 12:12:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12354 states. [2020-10-28 12:12:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12354 states to 12354 states and 14797 transitions. [2020-10-28 12:12:43,663 INFO L78 Accepts]: Start accepts. Automaton has 12354 states and 14797 transitions. Word has length 391 [2020-10-28 12:12:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:43,663 INFO L481 AbstractCegarLoop]: Abstraction has 12354 states and 14797 transitions. [2020-10-28 12:12:43,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12354 states and 14797 transitions. [2020-10-28 12:12:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 12:12:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:43,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:43,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:12:43,681 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1560274569, now seen corresponding path program 1 times [2020-10-28 12:12:43,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:43,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620269798] [2020-10-28 12:12:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 88 [2020-10-28 12:12:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:45,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:45,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:45,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:45,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:12:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:12:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:45,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:12:45,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620269798] [2020-10-28 12:12:45,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:45,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:45,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618160941] [2020-10-28 12:12:45,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:45,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:45,943 INFO L87 Difference]: Start difference. First operand 12354 states and 14797 transitions. Second operand 7 states. [2020-10-28 12:12:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:49,486 INFO L93 Difference]: Finished difference Result 22473 states and 27068 transitions. [2020-10-28 12:12:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:12:49,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-28 12:12:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:49,524 INFO L225 Difference]: With dead ends: 22473 [2020-10-28 12:12:49,524 INFO L226 Difference]: Without dead ends: 12571 [2020-10-28 12:12:49,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:12:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12571 states. [2020-10-28 12:12:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12571 to 12552. [2020-10-28 12:12:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12552 states. [2020-10-28 12:12:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 15031 transitions. [2020-10-28 12:12:49,873 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 15031 transitions. Word has length 411 [2020-10-28 12:12:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:49,873 INFO L481 AbstractCegarLoop]: Abstraction has 12552 states and 15031 transitions. [2020-10-28 12:12:49,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 15031 transitions. [2020-10-28 12:12:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-28 12:12:49,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:49,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:49,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:12:49,891 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:49,892 INFO L82 PathProgramCache]: Analyzing trace with hash 688861683, now seen corresponding path program 1 times [2020-10-28 12:12:49,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:49,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377868933] [2020-10-28 12:12:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2652 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:12:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:52,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:52,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:52,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:52,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:52,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:52,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:12:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:12:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:53,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:12:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-28 12:12:53,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377868933] [2020-10-28 12:12:53,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:53,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:53,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268951084] [2020-10-28 12:12:53,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:53,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:53,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:53,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:53,483 INFO L87 Difference]: Start difference. First operand 12552 states and 15031 transitions. Second operand 5 states. [2020-10-28 12:12:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:56,036 INFO L93 Difference]: Finished difference Result 22668 states and 27276 transitions. [2020-10-28 12:12:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:56,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2020-10-28 12:12:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:56,059 INFO L225 Difference]: With dead ends: 22668 [2020-10-28 12:12:56,059 INFO L226 Difference]: Without dead ends: 12568 [2020-10-28 12:12:56,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:12:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12568 states. [2020-10-28 12:12:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12568 to 12552. [2020-10-28 12:12:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12552 states. [2020-10-28 12:12:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 14579 transitions. [2020-10-28 12:12:56,288 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 14579 transitions. Word has length 430 [2020-10-28 12:12:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:56,288 INFO L481 AbstractCegarLoop]: Abstraction has 12552 states and 14579 transitions. [2020-10-28 12:12:56,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:12:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 14579 transitions. [2020-10-28 12:12:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-28 12:12:56,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:56,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:56,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:12:56,303 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:56,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1757974039, now seen corresponding path program 1 times [2020-10-28 12:12:56,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:56,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435541401] [2020-10-28 12:12:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 12:12:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:12:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:12:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:58,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:58,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:12:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:58,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:59,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:12:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:12:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:12:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 12:12:59,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435541401] [2020-10-28 12:12:59,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:59,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:59,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784609672] [2020-10-28 12:12:59,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:59,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:59,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:59,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:59,756 INFO L87 Difference]: Start difference. First operand 12552 states and 14579 transitions. Second operand 7 states. [2020-10-28 12:13:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:02,889 INFO L93 Difference]: Finished difference Result 24181 states and 28036 transitions. [2020-10-28 12:13:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:13:02,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-28 12:13:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:02,912 INFO L225 Difference]: With dead ends: 24181 [2020-10-28 12:13:02,912 INFO L226 Difference]: Without dead ends: 12527 [2020-10-28 12:13:02,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:13:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12527 states. [2020-10-28 12:13:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12527 to 11376. [2020-10-28 12:13:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11376 states. [2020-10-28 12:13:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 12942 transitions. [2020-10-28 12:13:03,112 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 12942 transitions. Word has length 433 [2020-10-28 12:13:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:03,112 INFO L481 AbstractCegarLoop]: Abstraction has 11376 states and 12942 transitions. [2020-10-28 12:13:03,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 12942 transitions. [2020-10-28 12:13:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-28 12:13:03,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:03,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:03,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:13:03,122 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1306881186, now seen corresponding path program 1 times [2020-10-28 12:13:03,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:03,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069652637] [2020-10-28 12:13:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:04,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:04,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 12:13:04,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-28 12:13:04,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:04,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:13:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:13:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:05,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:05,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:13:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:13:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:05,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:05,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:05,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:13:05,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:13:05,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069652637] [2020-10-28 12:13:05,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:05,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:05,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923120972] [2020-10-28 12:13:05,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:05,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:05,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:05,986 INFO L87 Difference]: Start difference. First operand 11376 states and 12942 transitions. Second operand 7 states. [2020-10-28 12:13:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:09,378 INFO L93 Difference]: Finished difference Result 20573 states and 23730 transitions. [2020-10-28 12:13:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:13:09,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-28 12:13:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:09,408 INFO L225 Difference]: With dead ends: 20573 [2020-10-28 12:13:09,408 INFO L226 Difference]: Without dead ends: 11649 [2020-10-28 12:13:09,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:13:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11649 states. [2020-10-28 12:13:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11649 to 11564. [2020-10-28 12:13:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11564 states. [2020-10-28 12:13:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 13148 transitions. [2020-10-28 12:13:09,599 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 13148 transitions. Word has length 433 [2020-10-28 12:13:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:09,599 INFO L481 AbstractCegarLoop]: Abstraction has 11564 states and 13148 transitions. [2020-10-28 12:13:09,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 13148 transitions. [2020-10-28 12:13:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-28 12:13:09,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:09,608 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:09,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:13:09,609 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -75218952, now seen corresponding path program 1 times [2020-10-28 12:13:09,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:09,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586088536] [2020-10-28 12:13:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:14,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:14,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:14,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:14,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:15,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:15,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:15,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:15,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:15,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:13:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 12:13:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-28 12:13:15,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586088536] [2020-10-28 12:13:15,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:15,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:15,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202520440] [2020-10-28 12:13:15,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:15,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:15,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:15,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:15,506 INFO L87 Difference]: Start difference. First operand 11564 states and 13148 transitions. Second operand 5 states. [2020-10-28 12:13:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:17,994 INFO L93 Difference]: Finished difference Result 20665 states and 23445 transitions. [2020-10-28 12:13:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:17,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2020-10-28 12:13:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:18,022 INFO L225 Difference]: With dead ends: 20665 [2020-10-28 12:13:18,022 INFO L226 Difference]: Without dead ends: 11553 [2020-10-28 12:13:18,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11553 states. [2020-10-28 12:13:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11553 to 11347. [2020-10-28 12:13:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11347 states. [2020-10-28 12:13:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 12571 transitions. [2020-10-28 12:13:18,196 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 12571 transitions. Word has length 473 [2020-10-28 12:13:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:18,197 INFO L481 AbstractCegarLoop]: Abstraction has 11347 states and 12571 transitions. [2020-10-28 12:13:18,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 12571 transitions. [2020-10-28 12:13:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-28 12:13:18,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:18,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:18,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:13:18,211 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:18,211 INFO L82 PathProgramCache]: Analyzing trace with hash 652785752, now seen corresponding path program 1 times [2020-10-28 12:13:18,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:18,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134404139] [2020-10-28 12:13:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 12:13:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:13:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:13:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:19,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:13:19,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:19,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:13:19,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:19,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:13:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:19,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:19,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:13:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:13:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-28 12:13:19,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134404139] [2020-10-28 12:13:19,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:19,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:19,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825033743] [2020-10-28 12:13:19,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:19,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:19,505 INFO L87 Difference]: Start difference. First operand 11347 states and 12571 transitions. Second operand 5 states. [2020-10-28 12:13:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:21,657 INFO L93 Difference]: Finished difference Result 12500 states and 13876 transitions. [2020-10-28 12:13:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:21,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-28 12:13:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:21,762 INFO L225 Difference]: With dead ends: 12500 [2020-10-28 12:13:21,762 INFO L226 Difference]: Without dead ends: 12497 [2020-10-28 12:13:21,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12497 states. [2020-10-28 12:13:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12497 to 9463. [2020-10-28 12:13:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9463 states. [2020-10-28 12:13:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 10500 transitions. [2020-10-28 12:13:21,962 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 10500 transitions. Word has length 493 [2020-10-28 12:13:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:21,963 INFO L481 AbstractCegarLoop]: Abstraction has 9463 states and 10500 transitions. [2020-10-28 12:13:21,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 10500 transitions. [2020-10-28 12:13:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-28 12:13:21,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:21,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:21,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:13:21,977 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:21,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1510945167, now seen corresponding path program 1 times [2020-10-28 12:13:21,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:21,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474444133] [2020-10-28 12:13:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:22,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-28 12:13:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:13:23,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:13:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:24,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:24,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:13:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:13:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-28 12:13:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:13:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-28 12:13:25,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474444133] [2020-10-28 12:13:25,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:25,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:13:25,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370605143] [2020-10-28 12:13:25,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:13:25,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:25,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:13:25,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:13:25,099 INFO L87 Difference]: Start difference. First operand 9463 states and 10500 transitions. Second operand 8 states. [2020-10-28 12:13:26,073 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 12:13:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:28,957 INFO L93 Difference]: Finished difference Result 19137 states and 21311 transitions. [2020-10-28 12:13:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:13:28,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 496 [2020-10-28 12:13:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:28,976 INFO L225 Difference]: With dead ends: 19137 [2020-10-28 12:13:28,976 INFO L226 Difference]: Without dead ends: 10058 [2020-10-28 12:13:28,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10058 states. [2020-10-28 12:13:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 9846. [2020-10-28 12:13:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9846 states. [2020-10-28 12:13:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 10887 transitions. [2020-10-28 12:13:29,198 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 10887 transitions. Word has length 496 [2020-10-28 12:13:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:29,198 INFO L481 AbstractCegarLoop]: Abstraction has 9846 states and 10887 transitions. [2020-10-28 12:13:29,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:13:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 10887 transitions. [2020-10-28 12:13:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-28 12:13:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:29,208 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:29,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:13:29,208 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash 581724550, now seen corresponding path program 1 times [2020-10-28 12:13:29,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:29,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815036860] [2020-10-28 12:13:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:13:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:34,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:13:34,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:34,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:13:34,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:13:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-28 12:13:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:13:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:13:35,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815036860] [2020-10-28 12:13:35,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:35,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:35,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521335513] [2020-10-28 12:13:35,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:35,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:35,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:35,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:35,398 INFO L87 Difference]: Start difference. First operand 9846 states and 10887 transitions. Second operand 7 states. [2020-10-28 12:13:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:38,399 INFO L93 Difference]: Finished difference Result 19715 states and 21821 transitions. [2020-10-28 12:13:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:13:38,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-28 12:13:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:38,415 INFO L225 Difference]: With dead ends: 19715 [2020-10-28 12:13:38,416 INFO L226 Difference]: Without dead ends: 10253 [2020-10-28 12:13:38,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:13:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2020-10-28 12:13:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 10224. [2020-10-28 12:13:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10224 states. [2020-10-28 12:13:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 11283 transitions. [2020-10-28 12:13:38,545 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 11283 transitions. Word has length 531 [2020-10-28 12:13:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:38,546 INFO L481 AbstractCegarLoop]: Abstraction has 10224 states and 11283 transitions. [2020-10-28 12:13:38,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 11283 transitions. [2020-10-28 12:13:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-28 12:13:38,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:38,555 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:38,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:13:38,555 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:38,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1326527272, now seen corresponding path program 1 times [2020-10-28 12:13:38,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:38,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135906067] [2020-10-28 12:13:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-28 12:13:43,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:13:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:13:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:13:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:13:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 12:13:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:13:44,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:13:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:13:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:44,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:13:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 727 proven. 6 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:13:44,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135906067] [2020-10-28 12:13:44,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:44,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:13:44,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429176436] [2020-10-28 12:13:44,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:13:44,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:44,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:13:44,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:13:44,985 INFO L87 Difference]: Start difference. First operand 10224 states and 11283 transitions. Second operand 10 states. [2020-10-28 12:13:50,003 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-28 12:13:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:50,706 INFO L93 Difference]: Finished difference Result 20865 states and 23049 transitions. [2020-10-28 12:13:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 12:13:50,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 532 [2020-10-28 12:13:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:50,727 INFO L225 Difference]: With dead ends: 20865 [2020-10-28 12:13:50,727 INFO L226 Difference]: Without dead ends: 11025 [2020-10-28 12:13:50,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-28 12:13:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11025 states. [2020-10-28 12:13:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11025 to 10802. [2020-10-28 12:13:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10802 states. [2020-10-28 12:13:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10802 states to 10802 states and 11917 transitions. [2020-10-28 12:13:50,916 INFO L78 Accepts]: Start accepts. Automaton has 10802 states and 11917 transitions. Word has length 532 [2020-10-28 12:13:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:50,917 INFO L481 AbstractCegarLoop]: Abstraction has 10802 states and 11917 transitions. [2020-10-28 12:13:50,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:13:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 10802 states and 11917 transitions. [2020-10-28 12:13:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-28 12:13:50,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:50,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:50,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:13:50,932 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:50,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1742979444, now seen corresponding path program 1 times [2020-10-28 12:13:50,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:50,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767720039] [2020-10-28 12:13:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-28 12:13:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:13:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:13:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:13:56,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:13:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:13:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-28 12:13:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:56,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:13:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 491 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:13:57,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767720039] [2020-10-28 12:13:57,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:57,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:13:57,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577468622] [2020-10-28 12:13:57,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:57,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:57,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:57,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:57,017 INFO L87 Difference]: Start difference. First operand 10802 states and 11917 transitions. Second operand 7 states. [2020-10-28 12:14:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:00,655 INFO L93 Difference]: Finished difference Result 21256 states and 23460 transitions. [2020-10-28 12:14:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:00,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-28 12:14:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:00,673 INFO L225 Difference]: With dead ends: 21256 [2020-10-28 12:14:00,673 INFO L226 Difference]: Without dead ends: 10838 [2020-10-28 12:14:00,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2020-10-28 12:14:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 10616. [2020-10-28 12:14:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10616 states. [2020-10-28 12:14:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 11510 transitions. [2020-10-28 12:14:00,954 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 11510 transitions. Word has length 545 [2020-10-28 12:14:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:00,954 INFO L481 AbstractCegarLoop]: Abstraction has 10616 states and 11510 transitions. [2020-10-28 12:14:00,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 11510 transitions. [2020-10-28 12:14:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-28 12:14:00,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:00,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-28 12:14:00,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 12:14:00,965 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 186630843, now seen corresponding path program 1 times [2020-10-28 12:14:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:00,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056254476] [2020-10-28 12:14:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2774 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:14:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:04,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:14:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:14:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:04,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:14:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:14:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:14:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 12:14:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 12:14:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 405 proven. 106 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2020-10-28 12:14:04,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056254476] [2020-10-28 12:14:04,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:04,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:04,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664760951] [2020-10-28 12:14:04,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:04,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:04,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:04,742 INFO L87 Difference]: Start difference. First operand 10616 states and 11510 transitions. Second operand 7 states. [2020-10-28 12:14:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:08,274 INFO L93 Difference]: Finished difference Result 21654 states and 23497 transitions. [2020-10-28 12:14:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:08,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-28 12:14:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:08,294 INFO L225 Difference]: With dead ends: 21654 [2020-10-28 12:14:08,294 INFO L226 Difference]: Without dead ends: 11422 [2020-10-28 12:14:08,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2020-10-28 12:14:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 10621. [2020-10-28 12:14:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10621 states. [2020-10-28 12:14:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 11469 transitions. [2020-10-28 12:14:08,439 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 11469 transitions. Word has length 559 [2020-10-28 12:14:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:08,440 INFO L481 AbstractCegarLoop]: Abstraction has 10621 states and 11469 transitions. [2020-10-28 12:14:08,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 11469 transitions. [2020-10-28 12:14:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2020-10-28 12:14:08,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:08,453 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:08,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 12:14:08,453 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1428280332, now seen corresponding path program 1 times [2020-10-28 12:14:08,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:08,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094842392] [2020-10-28 12:14:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:13,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 585 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:14:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:14:13,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 12:14:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:13,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:14:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:13,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:14:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:14:14,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:14:14,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:14:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:14:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:14:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:14:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-28 12:14:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:14,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:14,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:14:14,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 12:14:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:14,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:14:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 793 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:14:15,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094842392] [2020-10-28 12:14:15,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:15,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:14:15,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714639866] [2020-10-28 12:14:15,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:14:15,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:14:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:14:15,244 INFO L87 Difference]: Start difference. First operand 10621 states and 11469 transitions. Second operand 10 states. [2020-10-28 12:14:17,613 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:14:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:20,774 INFO L93 Difference]: Finished difference Result 20702 states and 22363 transitions. [2020-10-28 12:14:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 12:14:20,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 567 [2020-10-28 12:14:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:20,794 INFO L225 Difference]: With dead ends: 20702 [2020-10-28 12:14:20,794 INFO L226 Difference]: Without dead ends: 10465 [2020-10-28 12:14:20,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-28 12:14:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2020-10-28 12:14:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 10429. [2020-10-28 12:14:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10429 states. [2020-10-28 12:14:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10429 states to 10429 states and 11249 transitions. [2020-10-28 12:14:20,995 INFO L78 Accepts]: Start accepts. Automaton has 10429 states and 11249 transitions. Word has length 567 [2020-10-28 12:14:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:20,996 INFO L481 AbstractCegarLoop]: Abstraction has 10429 states and 11249 transitions. [2020-10-28 12:14:20,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:14:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 10429 states and 11249 transitions. [2020-10-28 12:14:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-28 12:14:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:21,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:21,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 12:14:21,014 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1799834640, now seen corresponding path program 1 times [2020-10-28 12:14:21,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:21,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435465678] [2020-10-28 12:14:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking...