/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=SHALLOWEST --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/Problem03_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:51:40,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:51:40,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:51:40,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:51:40,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:51:40,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:51:40,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:51:40,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:51:40,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:51:40,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:51:40,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:51:40,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:51:40,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:51:40,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:51:40,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:51:40,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:51:40,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:51:40,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:51:40,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:51:40,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:51:40,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:51:40,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:51:40,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:51:40,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:51:40,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:51:40,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:51:40,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:51:40,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:51:40,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:51:40,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:51:40,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:51:40,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:51:40,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:51:40,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:51:40,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:51:40,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:51:40,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:51:40,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:51:40,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:51:40,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:51:40,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:51:40,188 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 [2020-10-26 20:51:40,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:51:40,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:51:40,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:51:40,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:51:40,248 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:51:40,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:51:40,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:51:40,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:51:40,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:51:40,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:51:40,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:51:40,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:51:40,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:51:40,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:51:40,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:51:40,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:51:40,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:51:40,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:51:40,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:51:40,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:51:40,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:51:40,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:51:40,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:51:40,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:51:40,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:51:40,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:51:40,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:51:40,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:51:40,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:51:40,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:51:40,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:51:40,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:51:40,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:51:40,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:51:40,682 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:51:40,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label46.c [2020-10-26 20:51:40,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40d2e5a79/8738b0aa50104d04adb9fd27809c1046/FLAG2cd4f5a5c [2020-10-26 20:51:41,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:51:41,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label46.c [2020-10-26 20:51:41,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40d2e5a79/8738b0aa50104d04adb9fd27809c1046/FLAG2cd4f5a5c [2020-10-26 20:51:41,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40d2e5a79/8738b0aa50104d04adb9fd27809c1046 [2020-10-26 20:51:41,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:51:41,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:51:41,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:51:41,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:51:41,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:51:41,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:51:41" (1/1) ... [2020-10-26 20:51:41,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:41, skipping insertion in model container [2020-10-26 20:51:41,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:51:41" (1/1) ... [2020-10-26 20:51:41,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:51:42,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:51:42,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:51:42,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:51:43,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:51:43,105 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:51:43,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43 WrapperNode [2020-10-26 20:51:43,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:51:43,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:51:43,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:51:43,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:51:43,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... [2020-10-26 20:51:43,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:51:43,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:51:43,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:51:43,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:51:43,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:51:43,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:51:43,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:51:43,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:51:43,431 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:51:43,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:51:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:51:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:51:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:51:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:51:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:51:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:51:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:51:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:51:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:51:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:51:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:51:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:51:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:51:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:51:45,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:51:45,575 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:51:45,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:51:45 BoogieIcfgContainer [2020-10-26 20:51:45,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:51:45,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:51:45,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:51:45,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:51:45,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:51:41" (1/3) ... [2020-10-26 20:51:45,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c424dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:51:45, skipping insertion in model container [2020-10-26 20:51:45,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:51:43" (2/3) ... [2020-10-26 20:51:45,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c424dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:51:45, skipping insertion in model container [2020-10-26 20:51:45,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:51:45" (3/3) ... [2020-10-26 20:51:45,587 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label46.c [2020-10-26 20:51:45,600 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:51:45,606 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:51:45,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:51:45,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:51:45,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:51:45,652 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:51:45,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:51:45,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:51:45,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:51:45,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:51:45,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:51:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:51:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-26 20:51:45,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:51:45,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:51:45,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:51:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:51:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1457415760, now seen corresponding path program 1 times [2020-10-26 20:51:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:51:45,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375665524] [2020-10-26 20:51:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:51:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:50,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 20:51:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:51:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-10-26 20:51:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:51:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:51:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:51:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 20:51:51,831 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-26 20:51:51,980 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-26 20:51:52,119 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-26 20:51:52,518 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:51:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:51:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:52,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:51:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 20:51:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:51:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:51:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:51:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:51:53,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375665524] [2020-10-26 20:51:53,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:51:53,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:51:53,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612409657] [2020-10-26 20:51:53,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:51:53,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:51:53,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:51:53,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:51:53,211 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-26 20:51:53,884 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-26 20:51:54,897 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-26 20:51:55,919 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-26 20:51:57,038 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 210 DAG size of output: 204 [2020-10-26 20:51:58,799 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-10-26 20:52:00,779 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 224 DAG size of output: 202 [2020-10-26 20:52:02,489 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 227 DAG size of output: 201 [2020-10-26 20:52:06,318 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 228 DAG size of output: 200 [2020-10-26 20:52:07,707 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 230 DAG size of output: 198 [2020-10-26 20:52:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:11,187 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-26 20:52:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:52:11,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 192 [2020-10-26 20:52:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:11,205 INFO L225 Difference]: With dead ends: 742 [2020-10-26 20:52:11,206 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 20:52:11,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:52:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 20:52:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-26 20:52:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-26 20:52:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-26 20:52:11,295 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 192 [2020-10-26 20:52:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:11,296 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-26 20:52:11,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:52:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-26 20:52:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 20:52:11,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:11,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:11,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:52:11,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:11,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2118050499, now seen corresponding path program 1 times [2020-10-26 20:52:11,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:11,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900063132] [2020-10-26 20:52:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:16,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 20:52:16,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:52:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 20:52:16,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:16,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:52:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:52:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 20:52:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:52:16,866 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:52:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:52:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:16,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:16,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:52:16,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:52:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:52:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:52:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:52:17,067 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:52:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:52:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:17,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:52:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 20:52:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:52:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:52:17,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900063132] [2020-10-26 20:52:17,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:52:17,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:52:17,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543211761] [2020-10-26 20:52:17,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:52:17,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:52:17,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:52:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:52:17,307 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 6 states. [2020-10-26 20:52:17,560 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:52:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:20,579 INFO L93 Difference]: Finished difference Result 842 states and 1306 transitions. [2020-10-26 20:52:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:52:20,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-10-26 20:52:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:20,588 INFO L225 Difference]: With dead ends: 842 [2020-10-26 20:52:20,588 INFO L226 Difference]: Without dead ends: 598 [2020-10-26 20:52:20,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:52:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-26 20:52:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2020-10-26 20:52:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-26 20:52:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 856 transitions. [2020-10-26 20:52:20,649 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 856 transitions. Word has length 203 [2020-10-26 20:52:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 856 transitions. [2020-10-26 20:52:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:52:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 856 transitions. [2020-10-26 20:52:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 20:52:20,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:20,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:20,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:52:20,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1156131788, now seen corresponding path program 1 times [2020-10-26 20:52:20,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:20,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104281515] [2020-10-26 20:52:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:24,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:24,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 20:52:24,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:52:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4208 [2020-10-26 20:52:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:52:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:52:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:52:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:25,265 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:52:25,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:52:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:25,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:25,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:52:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:52:25,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:52:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:52:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:52:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:52:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:52:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:52:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:52:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:52:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 20:52:25,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:52:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:52:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104281515] [2020-10-26 20:52:25,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:52:25,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:52:25,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230623775] [2020-10-26 20:52:25,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:52:25,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:52:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:52:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:52:25,632 INFO L87 Difference]: Start difference. First operand 595 states and 856 transitions. Second operand 7 states. [2020-10-26 20:52:25,892 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:52:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:29,678 INFO L93 Difference]: Finished difference Result 1546 states and 2325 transitions. [2020-10-26 20:52:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:52:29,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-26 20:52:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:29,686 INFO L225 Difference]: With dead ends: 1546 [2020-10-26 20:52:29,686 INFO L226 Difference]: Without dead ends: 1072 [2020-10-26 20:52:29,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:52:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-26 20:52:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2020-10-26 20:52:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-10-26 20:52:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1585 transitions. [2020-10-26 20:52:29,761 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1585 transitions. Word has length 212 [2020-10-26 20:52:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:29,761 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1585 transitions. [2020-10-26 20:52:29,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:52:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1585 transitions. [2020-10-26 20:52:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-26 20:52:29,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:29,767 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:29,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:52:29,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1998455575, now seen corresponding path program 1 times [2020-10-26 20:52:29,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:29,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871499830] [2020-10-26 20:52:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:33,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 20:52:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:52:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3229 [2020-10-26 20:52:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:52:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:52:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-26 20:52:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:52:33,546 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:52:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:52:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:33,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:33,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:52:33,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:52:33,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:52:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:52:33,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:33,722 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:52:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:52:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:33,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:33,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:52:33,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:52:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:52:33,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871499830] [2020-10-26 20:52:33,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:52:33,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:52:33,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565592938] [2020-10-26 20:52:33,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:52:33,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:52:33,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:52:33,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:52:33,944 INFO L87 Difference]: Start difference. First operand 1064 states and 1585 transitions. Second operand 6 states. [2020-10-26 20:52:34,224 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:52:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:37,741 INFO L93 Difference]: Finished difference Result 2911 states and 4508 transitions. [2020-10-26 20:52:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:52:37,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-26 20:52:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:37,758 INFO L225 Difference]: With dead ends: 2911 [2020-10-26 20:52:37,758 INFO L226 Difference]: Without dead ends: 1968 [2020-10-26 20:52:37,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:52:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-10-26 20:52:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1928. [2020-10-26 20:52:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-10-26 20:52:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2903 transitions. [2020-10-26 20:52:37,842 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2903 transitions. Word has length 213 [2020-10-26 20:52:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:37,843 INFO L481 AbstractCegarLoop]: Abstraction has 1928 states and 2903 transitions. [2020-10-26 20:52:37,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:52:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2903 transitions. [2020-10-26 20:52:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 20:52:37,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:37,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:37,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:52:37,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:37,853 INFO L82 PathProgramCache]: Analyzing trace with hash 170755472, now seen corresponding path program 1 times [2020-10-26 20:52:37,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:37,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975405737] [2020-10-26 20:52:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:42,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:42,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4717 [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:52:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 20:52:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:42,888 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:52:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:52:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:42,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:52:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:52:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:43,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:52:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:52:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:52:43,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:52:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:52:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:43,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:52:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:52:43,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975405737] [2020-10-26 20:52:43,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:52:43,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:52:43,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102001587] [2020-10-26 20:52:43,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:52:43,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:52:43,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:52:43,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:52:43,338 INFO L87 Difference]: Start difference. First operand 1928 states and 2903 transitions. Second operand 8 states. [2020-10-26 20:52:43,613 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:52:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:47,471 INFO L93 Difference]: Finished difference Result 5625 states and 8767 transitions. [2020-10-26 20:52:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:52:47,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2020-10-26 20:52:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:47,499 INFO L225 Difference]: With dead ends: 5625 [2020-10-26 20:52:47,500 INFO L226 Difference]: Without dead ends: 3818 [2020-10-26 20:52:47,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:52:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2020-10-26 20:52:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3767. [2020-10-26 20:52:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3767 states. [2020-10-26 20:52:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5739 transitions. [2020-10-26 20:52:47,687 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5739 transitions. Word has length 221 [2020-10-26 20:52:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:47,687 INFO L481 AbstractCegarLoop]: Abstraction has 3767 states and 5739 transitions. [2020-10-26 20:52:47,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:52:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5739 transitions. [2020-10-26 20:52:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-26 20:52:47,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:47,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:47,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:52:47,701 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1343251196, now seen corresponding path program 1 times [2020-10-26 20:52:47,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:47,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641906122] [2020-10-26 20:52:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:49,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:49,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:52:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:52:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:49,983 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:52:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:52:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:49,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:52:49,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:52:49,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:49,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:52:49,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:49,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:52:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:50,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:52:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:50,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:50,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:52:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 20:52:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:52:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:52:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:52:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:52:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:50,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:52:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:52:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:52:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:52:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:52:50,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641906122] [2020-10-26 20:52:50,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:52:50,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:52:50,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347715894] [2020-10-26 20:52:50,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:52:50,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:52:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:52:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:52:50,335 INFO L87 Difference]: Start difference. First operand 3767 states and 5739 transitions. Second operand 7 states. [2020-10-26 20:52:50,701 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:52:51,075 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:52:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:52:56,207 INFO L93 Difference]: Finished difference Result 12004 states and 19958 transitions. [2020-10-26 20:52:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:52:56,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-26 20:52:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:52:56,269 INFO L225 Difference]: With dead ends: 12004 [2020-10-26 20:52:56,269 INFO L226 Difference]: Without dead ends: 8358 [2020-10-26 20:52:56,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:52:56,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8358 states. [2020-10-26 20:52:56,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8358 to 8204. [2020-10-26 20:52:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-26 20:52:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 12192 transitions. [2020-10-26 20:52:56,593 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 12192 transitions. Word has length 224 [2020-10-26 20:52:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:52:56,593 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 12192 transitions. [2020-10-26 20:52:56,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:52:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 12192 transitions. [2020-10-26 20:52:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 20:52:56,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:52:56,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:52:56,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:52:56,620 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:52:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:52:56,620 INFO L82 PathProgramCache]: Analyzing trace with hash -656485896, now seen corresponding path program 1 times [2020-10-26 20:52:56,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:52:56,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059559362] [2020-10-26 20:52:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:52:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:52:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:52:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4407 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:53:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:01,352 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:53:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:53:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:53:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:01,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:01,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:53:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:53:01,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059559362] [2020-10-26 20:53:01,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:01,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:53:01,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585907027] [2020-10-26 20:53:01,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:53:01,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:01,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:53:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:53:01,828 INFO L87 Difference]: Start difference. First operand 8204 states and 12192 transitions. Second operand 7 states. [2020-10-26 20:53:02,099 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:53:04,183 INFO L93 Difference]: Finished difference Result 16145 states and 24263 transitions. [2020-10-26 20:53:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:53:04,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-26 20:53:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:53:04,240 INFO L225 Difference]: With dead ends: 16145 [2020-10-26 20:53:04,240 INFO L226 Difference]: Without dead ends: 8062 [2020-10-26 20:53:04,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:53:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2020-10-26 20:53:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 8048. [2020-10-26 20:53:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8048 states. [2020-10-26 20:53:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 11583 transitions. [2020-10-26 20:53:04,496 INFO L78 Accepts]: Start accepts. Automaton has 8048 states and 11583 transitions. Word has length 230 [2020-10-26 20:53:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:53:04,496 INFO L481 AbstractCegarLoop]: Abstraction has 8048 states and 11583 transitions. [2020-10-26 20:53:04,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:53:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8048 states and 11583 transitions. [2020-10-26 20:53:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-26 20:53:04,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:53:04,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:53:04,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:53:04,529 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:53:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:53:04,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1743684568, now seen corresponding path program 1 times [2020-10-26 20:53:04,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:53:04,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4258259] [2020-10-26 20:53:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:53:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-26 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:09,914 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:09,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:09,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:53:09,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:53:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:10,057 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:53:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:53:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:53:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 20:53:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:53:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 20:53:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 20:53:10,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4258259] [2020-10-26 20:53:10,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:10,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:53:10,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639994025] [2020-10-26 20:53:10,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:53:10,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:53:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:53:10,270 INFO L87 Difference]: Start difference. First operand 8048 states and 11583 transitions. Second operand 5 states. [2020-10-26 20:53:10,550 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:53:12,321 INFO L93 Difference]: Finished difference Result 15114 states and 21854 transitions. [2020-10-26 20:53:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:53:12,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-26 20:53:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:53:12,356 INFO L225 Difference]: With dead ends: 15114 [2020-10-26 20:53:12,356 INFO L226 Difference]: Without dead ends: 8044 [2020-10-26 20:53:12,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:53:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2020-10-26 20:53:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 8044. [2020-10-26 20:53:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-10-26 20:53:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 11575 transitions. [2020-10-26 20:53:12,584 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 11575 transitions. Word has length 234 [2020-10-26 20:53:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:53:12,585 INFO L481 AbstractCegarLoop]: Abstraction has 8044 states and 11575 transitions. [2020-10-26 20:53:12,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:53:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 11575 transitions. [2020-10-26 20:53:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-26 20:53:12,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:53:12,611 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:53:12,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:53:12,612 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:53:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:53:12,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1343398887, now seen corresponding path program 1 times [2020-10-26 20:53:12,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:53:12,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445503268] [2020-10-26 20:53:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:53:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:17,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-26 20:53:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:17,585 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:53:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:53:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:53:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:53:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 20:53:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:17,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:17,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:17,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:53:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:53:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 43 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:53:18,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445503268] [2020-10-26 20:53:18,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:18,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:53:18,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885982883] [2020-10-26 20:53:18,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:53:18,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:18,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:53:18,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:53:18,039 INFO L87 Difference]: Start difference. First operand 8044 states and 11575 transitions. Second operand 8 states. [2020-10-26 20:53:18,530 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:19,556 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:53:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:53:24,637 INFO L93 Difference]: Finished difference Result 28245 states and 46537 transitions. [2020-10-26 20:53:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:53:24,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-26 20:53:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:53:24,743 INFO L225 Difference]: With dead ends: 28245 [2020-10-26 20:53:24,744 INFO L226 Difference]: Without dead ends: 20322 [2020-10-26 20:53:24,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:53:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20322 states. [2020-10-26 20:53:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20322 to 19848. [2020-10-26 20:53:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19848 states. [2020-10-26 20:53:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19848 states to 19848 states and 28481 transitions. [2020-10-26 20:53:25,539 INFO L78 Accepts]: Start accepts. Automaton has 19848 states and 28481 transitions. Word has length 243 [2020-10-26 20:53:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:53:25,539 INFO L481 AbstractCegarLoop]: Abstraction has 19848 states and 28481 transitions. [2020-10-26 20:53:25,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:53:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19848 states and 28481 transitions. [2020-10-26 20:53:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-26 20:53:25,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:53:25,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:53:25,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:53:25,610 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:53:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:53:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1435083715, now seen corresponding path program 1 times [2020-10-26 20:53:25,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:53:25,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280215734] [2020-10-26 20:53:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:53:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:25,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:30,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:30,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-26 20:53:30,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:53:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 20:53:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:53:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:53:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:30,973 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:30,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:30,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:31,111 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:53:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:31,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:31,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:53:31,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 20:53:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:53:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:53:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:53:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 20:53:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:31,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:53:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 20:53:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:31,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 20:53:31,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280215734] [2020-10-26 20:53:31,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:31,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:53:31,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774170593] [2020-10-26 20:53:31,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:53:31,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:31,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:53:31,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:53:31,397 INFO L87 Difference]: Start difference. First operand 19848 states and 28481 transitions. Second operand 7 states. [2020-10-26 20:53:31,838 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:32,735 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:53:37,558 INFO L93 Difference]: Finished difference Result 64860 states and 102371 transitions. [2020-10-26 20:53:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:53:37,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-26 20:53:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:53:37,777 INFO L225 Difference]: With dead ends: 64860 [2020-10-26 20:53:37,777 INFO L226 Difference]: Without dead ends: 45137 [2020-10-26 20:53:37,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:53:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45137 states. [2020-10-26 20:53:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45137 to 43165. [2020-10-26 20:53:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43165 states. [2020-10-26 20:53:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43165 states to 43165 states and 58755 transitions. [2020-10-26 20:53:39,855 INFO L78 Accepts]: Start accepts. Automaton has 43165 states and 58755 transitions. Word has length 253 [2020-10-26 20:53:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:53:39,856 INFO L481 AbstractCegarLoop]: Abstraction has 43165 states and 58755 transitions. [2020-10-26 20:53:39,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:53:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43165 states and 58755 transitions. [2020-10-26 20:53:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 20:53:39,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:53:39,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:53:39,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:53:39,971 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:53:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:53:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1869906840, now seen corresponding path program 1 times [2020-10-26 20:53:39,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:53:39,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62638005] [2020-10-26 20:53:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:53:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:42,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:53:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:53:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 20:53:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:45,339 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:53:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:45,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:45,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:53:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:53:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 20:53:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-26 20:53:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:53:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 75 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 20:53:46,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62638005] [2020-10-26 20:53:46,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:46,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:53:46,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855330406] [2020-10-26 20:53:46,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:53:46,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:46,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:53:46,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:53:46,014 INFO L87 Difference]: Start difference. First operand 43165 states and 58755 transitions. Second operand 9 states. [2020-10-26 20:53:46,290 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:47,679 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:53:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:53:50,381 INFO L93 Difference]: Finished difference Result 92431 states and 128645 transitions. [2020-10-26 20:53:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:53:50,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2020-10-26 20:53:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:53:50,589 INFO L225 Difference]: With dead ends: 92431 [2020-10-26 20:53:50,589 INFO L226 Difference]: Without dead ends: 49415 [2020-10-26 20:53:50,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:53:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49415 states. [2020-10-26 20:53:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49415 to 49175. [2020-10-26 20:53:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49175 states. [2020-10-26 20:53:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49175 states to 49175 states and 60954 transitions. [2020-10-26 20:53:52,222 INFO L78 Accepts]: Start accepts. Automaton has 49175 states and 60954 transitions. Word has length 274 [2020-10-26 20:53:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:53:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 49175 states and 60954 transitions. [2020-10-26 20:53:52,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:53:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 49175 states and 60954 transitions. [2020-10-26 20:53:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-26 20:53:52,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:53:52,294 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:53:52,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:53:52,295 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:53:52,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:53:52,295 INFO L82 PathProgramCache]: Analyzing trace with hash 344229596, now seen corresponding path program 1 times [2020-10-26 20:53:52,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:53:52,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19062905] [2020-10-26 20:53:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:53:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:57,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:57,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-26 20:53:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:53:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 20:53:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:53:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:53:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 20:53:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:57,891 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:53:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:53:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:53:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:53:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:53:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:53:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:53:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 20:53:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 20:53:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 20:53:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:53:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:53:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:53:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 117 proven. 38 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 20:53:58,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19062905] [2020-10-26 20:53:58,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:53:58,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:53:58,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274308847] [2020-10-26 20:53:58,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:53:58,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:53:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:53:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:53:58,617 INFO L87 Difference]: Start difference. First operand 49175 states and 60954 transitions. Second operand 8 states. [2020-10-26 20:53:58,895 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:54:01,331 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:54:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:54:03,405 INFO L93 Difference]: Finished difference Result 124275 states and 158009 transitions. [2020-10-26 20:54:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:54:03,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 312 [2020-10-26 20:54:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:54:03,727 INFO L225 Difference]: With dead ends: 124275 [2020-10-26 20:54:03,727 INFO L226 Difference]: Without dead ends: 77781 [2020-10-26 20:54:03,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:54:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77781 states. [2020-10-26 20:54:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77781 to 77205. [2020-10-26 20:54:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77205 states. [2020-10-26 20:54:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77205 states to 77205 states and 95823 transitions. [2020-10-26 20:54:06,054 INFO L78 Accepts]: Start accepts. Automaton has 77205 states and 95823 transitions. Word has length 312 [2020-10-26 20:54:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:54:06,055 INFO L481 AbstractCegarLoop]: Abstraction has 77205 states and 95823 transitions. [2020-10-26 20:54:06,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:54:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 77205 states and 95823 transitions. [2020-10-26 20:54:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-26 20:54:06,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:54:06,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:54:06,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:54:06,167 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:54:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:54:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash 395130749, now seen corresponding path program 1 times [2020-10-26 20:54:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:54:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621245735] [2020-10-26 20:54:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:54:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:08,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 20:54:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:11,574 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:54:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:54:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:54:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:54:11,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:11,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:54:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:11,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:11,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:54:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:54:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 20:54:11,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:54:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:54:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 20:54:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 20:54:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:12,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:12,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:54:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:54:12,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:54:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:12,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 20:54:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:12,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-26 20:54:12,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621245735] [2020-10-26 20:54:12,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:54:12,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:54:12,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033302216] [2020-10-26 20:54:12,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:54:12,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:54:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:54:12,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:54:12,494 INFO L87 Difference]: Start difference. First operand 77205 states and 95823 transitions. Second operand 7 states. [2020-10-26 20:54:12,792 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:54:14,362 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:54:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:54:17,154 INFO L93 Difference]: Finished difference Result 164562 states and 205745 transitions. [2020-10-26 20:54:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:54:17,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-26 20:54:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:54:17,517 INFO L225 Difference]: With dead ends: 164562 [2020-10-26 20:54:17,517 INFO L226 Difference]: Without dead ends: 103956 [2020-10-26 20:54:17,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:54:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103956 states. [2020-10-26 20:54:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103956 to 103880. [2020-10-26 20:54:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103880 states. [2020-10-26 20:54:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103880 states to 103880 states and 128310 transitions. [2020-10-26 20:54:21,170 INFO L78 Accepts]: Start accepts. Automaton has 103880 states and 128310 transitions. Word has length 320 [2020-10-26 20:54:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:54:21,171 INFO L481 AbstractCegarLoop]: Abstraction has 103880 states and 128310 transitions. [2020-10-26 20:54:21,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:54:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 103880 states and 128310 transitions. [2020-10-26 20:54:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-26 20:54:21,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:54:21,304 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:54:21,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:54:21,305 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:54:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:54:21,305 INFO L82 PathProgramCache]: Analyzing trace with hash -108495701, now seen corresponding path program 1 times [2020-10-26 20:54:21,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:54:21,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282601991] [2020-10-26 20:54:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:54:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 20:54:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:26,682 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:54:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:54:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:54:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:54:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:54:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:26,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:54:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:54:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:54:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:27,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:27,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:54:27,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:54:27,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:54:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 20:54:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:54:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 20:54:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:27,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:27,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:27,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:54:27,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:54:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 135 proven. 29 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 20:54:27,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282601991] [2020-10-26 20:54:27,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:54:27,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:54:27,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600542859] [2020-10-26 20:54:27,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:54:27,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:54:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:54:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:54:27,678 INFO L87 Difference]: Start difference. First operand 103880 states and 128310 transitions. Second operand 8 states. [2020-10-26 20:54:27,968 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:54:29,467 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:54:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:54:32,567 INFO L93 Difference]: Finished difference Result 200113 states and 248173 transitions. [2020-10-26 20:54:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:54:32,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 332 [2020-10-26 20:54:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:54:32,918 INFO L225 Difference]: With dead ends: 200113 [2020-10-26 20:54:32,918 INFO L226 Difference]: Without dead ends: 120304 [2020-10-26 20:54:33,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:54:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120304 states. [2020-10-26 20:54:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120304 to 120006. [2020-10-26 20:54:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120006 states. [2020-10-26 20:54:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120006 states to 120006 states and 147737 transitions. [2020-10-26 20:54:36,435 INFO L78 Accepts]: Start accepts. Automaton has 120006 states and 147737 transitions. Word has length 332 [2020-10-26 20:54:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:54:36,436 INFO L481 AbstractCegarLoop]: Abstraction has 120006 states and 147737 transitions. [2020-10-26 20:54:36,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:54:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 120006 states and 147737 transitions. [2020-10-26 20:54:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-26 20:54:36,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:54:36,878 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:54:36,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:54:36,879 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:54:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:54:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1154085063, now seen corresponding path program 1 times [2020-10-26 20:54:36,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:54:36,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103412799] [2020-10-26 20:54:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:54:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:54:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,321 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:54:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:54:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:54:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:54:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:54:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:54:42,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 20:54:42,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:54:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 20:54:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 20:54:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 20:54:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-26 20:54:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 20:54:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:54:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 20:54:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:42,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:54:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:54:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 150 proven. 67 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 20:54:42,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103412799] [2020-10-26 20:54:42,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:54:42,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:54:42,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584642000] [2020-10-26 20:54:42,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:54:42,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:54:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:54:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:54:42,991 INFO L87 Difference]: Start difference. First operand 120006 states and 147737 transitions. Second operand 8 states. [2020-10-26 20:54:43,276 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:54:45,731 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:54:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:54:48,560 INFO L93 Difference]: Finished difference Result 261398 states and 321723 transitions. [2020-10-26 20:54:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:54:48,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-26 20:54:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:54:48,947 INFO L225 Difference]: With dead ends: 261398 [2020-10-26 20:54:48,947 INFO L226 Difference]: Without dead ends: 145136 [2020-10-26 20:54:49,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:54:49,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145136 states. [2020-10-26 20:54:52,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145136 to 144932. [2020-10-26 20:54:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144932 states. [2020-10-26 20:54:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144932 states to 144932 states and 176907 transitions. [2020-10-26 20:54:53,002 INFO L78 Accepts]: Start accepts. Automaton has 144932 states and 176907 transitions. Word has length 342 [2020-10-26 20:54:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:54:53,003 INFO L481 AbstractCegarLoop]: Abstraction has 144932 states and 176907 transitions. [2020-10-26 20:54:53,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:54:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 144932 states and 176907 transitions. [2020-10-26 20:54:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-26 20:54:53,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:54:53,138 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:54:53,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:54:53,138 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:54:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:54:53,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1760782360, now seen corresponding path program 2 times [2020-10-26 20:54:53,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:54:53,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611104193] [2020-10-26 20:54:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:54:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 20:54:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,503 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:54:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:54:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,649 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:54:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:54:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:58,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:54:58,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:54:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:54:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:54:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:54:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:54:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 20:54:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:54:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 20:54:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:58,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-26 20:54:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:54:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:54:59,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:54:59,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:54:59,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:54:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:54:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:54:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:54:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:54:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:54:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:54:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 154 proven. 31 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-26 20:54:59,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611104193] [2020-10-26 20:54:59,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:54:59,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:54:59,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371899717] [2020-10-26 20:54:59,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:54:59,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:54:59,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:54:59,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:54:59,175 INFO L87 Difference]: Start difference. First operand 144932 states and 176907 transitions. Second operand 7 states. [2020-10-26 20:54:59,569 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:54:59,979 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159