/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:11:03,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:11:03,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:11:03,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:11:03,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:11:03,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:11:03,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:11:03,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:11:03,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:11:03,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:11:03,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:11:03,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:11:03,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:11:03,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:11:03,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:11:03,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:11:03,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:11:03,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:11:03,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:11:03,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:11:03,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:11:03,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:11:03,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:11:03,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:11:03,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:11:03,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:11:03,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:11:03,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:11:03,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:11:03,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:11:03,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:11:03,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:11:03,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:11:03,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:11:03,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:11:03,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:11:03,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:11:03,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:11:03,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:11:03,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:11:03,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:11:03,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:11:03,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:11:03,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:11:03,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:11:03,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:11:03,332 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:11:03,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:11:03,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:11:03,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:11:03,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:11:03,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:11:03,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:11:03,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:11:03,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:11:03,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:11:03,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:11:03,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:11:03,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:11:03,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:11:03,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:11:03,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:11:03,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:11:03,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:11:03,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:11:03,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:11:03,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:11:03,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:11:03,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:11:03,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:11:03,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:11:03,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:11:03,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2020-10-27 14:11:03,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce82d354d/6eb8fbf8243d4f00a64cec84a686a0b6/FLAG8e4428647 [2020-10-27 14:11:04,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:11:04,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2020-10-27 14:11:04,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce82d354d/6eb8fbf8243d4f00a64cec84a686a0b6/FLAG8e4428647 [2020-10-27 14:11:04,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce82d354d/6eb8fbf8243d4f00a64cec84a686a0b6 [2020-10-27 14:11:04,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:11:04,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:11:04,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:04,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:11:04,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:11:04,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:04" (1/1) ... [2020-10-27 14:11:04,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce955ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:04, skipping insertion in model container [2020-10-27 14:11:04,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:04" (1/1) ... [2020-10-27 14:11:04,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:11:04,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:11:05,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:05,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:11:05,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:05,204 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:11:05,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05 WrapperNode [2020-10-27 14:11:05,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:05,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:11:05,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:11:05,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:11:05,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... [2020-10-27 14:11:05,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:11:05,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:11:05,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:11:05,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:11:05,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:11:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:11:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:11:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:11:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:11:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:11:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:11:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:11:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 14:11:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:11:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:11:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:11:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:11:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:11:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:11:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:11:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:11:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:11:05,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:11:05,758 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 14:11:05,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:05 BoogieIcfgContainer [2020-10-27 14:11:05,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:11:05,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:11:05,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:11:05,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:11:05,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:11:04" (1/3) ... [2020-10-27 14:11:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e41839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:05, skipping insertion in model container [2020-10-27 14:11:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:05" (2/3) ... [2020-10-27 14:11:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e41839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:05, skipping insertion in model container [2020-10-27 14:11:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:05" (3/3) ... [2020-10-27 14:11:05,781 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m2.c [2020-10-27 14:11:05,793 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:11:05,798 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:11:05,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:11:05,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:11:05,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:11:05,843 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:11:05,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:11:05,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:11:05,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:11:05,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:11:05,843 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:11:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:11:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:11:05,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:05,869 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] [2020-10-27 14:11:05,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1679398581, now seen corresponding path program 1 times [2020-10-27 14:11:05,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:05,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445899997] [2020-10-27 14:11:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:06,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:11:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-27 14:11:07,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:11:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:11:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:07,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:07,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:11:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:07,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445899997] [2020-10-27 14:11:07,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:07,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:11:07,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909752089] [2020-10-27 14:11:07,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:11:07,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:07,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:11:07,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:11:07,477 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 14:11:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:07,615 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2020-10-27 14:11:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:11:07,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-27 14:11:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:07,627 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:11:07,627 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:11:07,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:11:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:11:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:11:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:11:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-27 14:11:07,675 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2020-10-27 14:11:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:07,676 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-27 14:11:07,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:11:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-27 14:11:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:11:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:07,678 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] [2020-10-27 14:11:07,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:11:07,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -359303743, now seen corresponding path program 1 times [2020-10-27 14:11:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:07,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383500583] [2020-10-27 14:11:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:11:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-27 14:11:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:11:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:11:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:08,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:08,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:08,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:11:08,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:08,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383500583] [2020-10-27 14:11:08,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:08,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:11:08,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750095174] [2020-10-27 14:11:08,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:11:08,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:11:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:11:08,885 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-27 14:11:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:09,104 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-10-27 14:11:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:11:09,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 14:11:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:09,106 INFO L225 Difference]: With dead ends: 55 [2020-10-27 14:11:09,106 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 14:11:09,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 14:11:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-27 14:11:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:11:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 14:11:09,128 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-10-27 14:11:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 14:11:09,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:11:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 14:11:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:11:09,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:09,130 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] [2020-10-27 14:11:09,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:11:09,131 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1073664907, now seen corresponding path program 1 times [2020-10-27 14:11:09,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:09,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796034012] [2020-10-27 14:11:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:14,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:14,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 14:11:14,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:11:14,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:11:14,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:11:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:11:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:14,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:14,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:14,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:11:14,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:11:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:11:14,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796034012] [2020-10-27 14:11:14,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:14,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:11:14,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892184064] [2020-10-27 14:11:14,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:11:14,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:11:14,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:14,298 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2020-10-27 14:11:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:14,549 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-27 14:11:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:11:14,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 14:11:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:14,551 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:11:14,551 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:11:14,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:11:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:11:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 14:11:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:11:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 14:11:14,563 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 31 [2020-10-27 14:11:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:14,563 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 14:11:14,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:11:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 14:11:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:11:14,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:14,565 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:11:14,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:11:14,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash 169491669, now seen corresponding path program 2 times [2020-10-27 14:11:14,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:14,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134797508] [2020-10-27 14:11:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:19,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:19,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:11:19,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:11:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:11:19,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:11:19,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:19,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:11:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:11:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:21,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134797508] [2020-10-27 14:11:21,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:21,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:11:21,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186205620] [2020-10-27 14:11:21,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:11:21,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:21,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:11:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:11:21,084 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 27 states. [2020-10-27 14:11:21,613 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-27 14:11:22,347 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-27 14:11:22,530 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-27 14:11:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:23,611 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-27 14:11:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:11:23,617 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 41 [2020-10-27 14:11:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:23,619 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:11:23,619 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 14:11:23,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:11:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 14:11:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2020-10-27 14:11:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 14:11:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-27 14:11:23,652 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 41 [2020-10-27 14:11:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:23,652 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-27 14:11:23,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:11:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-27 14:11:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:11:23,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:23,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 14:11:23,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:11:23,657 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash -92060713, now seen corresponding path program 3 times [2020-10-27 14:11:23,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:23,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246878512] [2020-10-27 14:11:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:11:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:11:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:11:28,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:11:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:11:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:11:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:28,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:11:28,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246878512] [2020-10-27 14:11:28,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:28,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:11:28,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445809313] [2020-10-27 14:11:28,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:11:28,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:28,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:11:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:28,796 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 10 states. [2020-10-27 14:11:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:29,268 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-27 14:11:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:11:29,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 14:11:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:29,270 INFO L225 Difference]: With dead ends: 100 [2020-10-27 14:11:29,270 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 14:11:29,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:11:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 14:11:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-10-27 14:11:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 14:11:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-27 14:11:29,284 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 43 [2020-10-27 14:11:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:29,285 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-27 14:11:29,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:11:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-27 14:11:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:11:29,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:29,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 14:11:29,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:11:29,287 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:29,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1021123607, now seen corresponding path program 4 times [2020-10-27 14:11:29,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:29,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876911367] [2020-10-27 14:11:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:34,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:11:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:11:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:34,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:34,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:34,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:11:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:11:34,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876911367] [2020-10-27 14:11:34,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:34,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:11:34,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247398573] [2020-10-27 14:11:34,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:11:34,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:34,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:11:34,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:34,426 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 10 states. [2020-10-27 14:11:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:34,754 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-10-27 14:11:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:11:34,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 14:11:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:34,756 INFO L225 Difference]: With dead ends: 113 [2020-10-27 14:11:34,756 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 14:11:34,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:11:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 14:11:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-27 14:11:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:11:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:11:34,774 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 43 [2020-10-27 14:11:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:34,774 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:11:34,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:11:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:11:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 14:11:34,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:34,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:34,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:11:34,777 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash -22589025, now seen corresponding path program 5 times [2020-10-27 14:11:34,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:34,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390054030] [2020-10-27 14:11:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:39,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:11:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:11:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:11:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 14:11:41,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390054030] [2020-10-27 14:11:41,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:41,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:11:41,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675189272] [2020-10-27 14:11:41,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:11:41,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:11:41,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=862, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:11:41,203 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 31 states. [2020-10-27 14:11:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:43,596 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-10-27 14:11:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:11:43,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 51 [2020-10-27 14:11:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:43,598 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:11:43,598 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:11:43,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=179, Invalid=2173, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:11:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:11:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2020-10-27 14:11:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 14:11:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-10-27 14:11:43,613 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 51 [2020-10-27 14:11:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:43,613 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-10-27 14:11:43,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:11:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-10-27 14:11:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:11:43,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:43,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:43,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:11:43,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:43,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:43,617 INFO L82 PathProgramCache]: Analyzing trace with hash 791895585, now seen corresponding path program 6 times [2020-10-27 14:11:43,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:43,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913316277] [2020-10-27 14:11:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:11:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:11:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:11:48,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913316277] [2020-10-27 14:11:48,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:48,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:11:48,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976411139] [2020-10-27 14:11:48,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:11:48,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:48,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:11:48,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:11:48,796 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 12 states. [2020-10-27 14:11:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:49,492 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions. [2020-10-27 14:11:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:11:49,493 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-27 14:11:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:49,494 INFO L225 Difference]: With dead ends: 137 [2020-10-27 14:11:49,495 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:11:49,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:11:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:11:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-27 14:11:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:11:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-27 14:11:49,511 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 53 [2020-10-27 14:11:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:49,511 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-27 14:11:49,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:11:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-27 14:11:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:11:49,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:49,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:49,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:11:49,513 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:49,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1115170401, now seen corresponding path program 7 times [2020-10-27 14:11:49,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:49,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207113917] [2020-10-27 14:11:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:54,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:11:54,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:11:54,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:11:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:11:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:11:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:11:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:11:54,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207113917] [2020-10-27 14:11:54,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:54,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:11:54,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065503942] [2020-10-27 14:11:54,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:11:54,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:54,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:11:54,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:11:54,701 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 12 states. [2020-10-27 14:11:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:55,072 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-10-27 14:11:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:11:55,073 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-27 14:11:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:55,074 INFO L225 Difference]: With dead ends: 137 [2020-10-27 14:11:55,074 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:11:55,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:11:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:11:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-10-27 14:11:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:11:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 14:11:55,085 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 53 [2020-10-27 14:11:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:55,086 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 14:11:55,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:11:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 14:11:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:11:55,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:55,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:55,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:11:55,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1839353367, now seen corresponding path program 8 times [2020-10-27 14:11:55,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:55,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824328006] [2020-10-27 14:11:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:12:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:02,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:02,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:02,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 14:12:02,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824328006] [2020-10-27 14:12:02,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:02,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:12:02,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100300266] [2020-10-27 14:12:02,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:12:02,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:12:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1319, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:12:02,429 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 38 states. [2020-10-27 14:12:02,692 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-27 14:12:04,896 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-27 14:12:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:06,777 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2020-10-27 14:12:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:12:06,778 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 61 [2020-10-27 14:12:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:06,779 INFO L225 Difference]: With dead ends: 104 [2020-10-27 14:12:06,779 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:12:06,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=247, Invalid=3535, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 14:12:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:12:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-10-27 14:12:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 14:12:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-10-27 14:12:06,795 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 61 [2020-10-27 14:12:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:06,795 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-10-27 14:12:06,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:12:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-10-27 14:12:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 14:12:06,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:06,796 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:06,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:12:06,797 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:06,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1826874347, now seen corresponding path program 9 times [2020-10-27 14:12:06,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:06,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278185007] [2020-10-27 14:12:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:12:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:12:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-27 14:12:11,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278185007] [2020-10-27 14:12:11,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:11,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:12:11,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752000242] [2020-10-27 14:12:11,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:12:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:12:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:11,989 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 14 states. [2020-10-27 14:12:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:12,756 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2020-10-27 14:12:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:12:12,756 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-27 14:12:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:12,757 INFO L225 Difference]: With dead ends: 163 [2020-10-27 14:12:12,757 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:12:12,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:12:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:12:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-10-27 14:12:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 14:12:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-10-27 14:12:12,773 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 63 [2020-10-27 14:12:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:12,774 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-10-27 14:12:12,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:12:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-10-27 14:12:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 14:12:12,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:12,775 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:12,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:12:12,776 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:12,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1038640085, now seen corresponding path program 10 times [2020-10-27 14:12:12,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:12,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045495762] [2020-10-27 14:12:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:12:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:12:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:12:17,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:12:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:12:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:12:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:17,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-27 14:12:17,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045495762] [2020-10-27 14:12:17,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:17,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:12:17,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583915213] [2020-10-27 14:12:17,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:12:17,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:12:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:17,950 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 14 states. [2020-10-27 14:12:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:18,494 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2020-10-27 14:12:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:12:18,495 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-27 14:12:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:18,496 INFO L225 Difference]: With dead ends: 161 [2020-10-27 14:12:18,496 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 14:12:18,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:12:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 14:12:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2020-10-27 14:12:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:12:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:12:18,515 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 63 [2020-10-27 14:12:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:18,515 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:12:18,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:12:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:12:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:12:18,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:18,521 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:18,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:12:18,521 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:18,522 INFO L82 PathProgramCache]: Analyzing trace with hash 585956787, now seen corresponding path program 11 times [2020-10-27 14:12:18,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:18,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888141823] [2020-10-27 14:12:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-27 14:12:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:12:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:27,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:27,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 14:12:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888141823] [2020-10-27 14:12:27,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:27,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:12:27,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331627940] [2020-10-27 14:12:27,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:12:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:12:27,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1974, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:12:27,055 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 46 states. [2020-10-27 14:12:27,395 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 14:12:27,992 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 14:12:29,585 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 112 [2020-10-27 14:12:30,360 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 14:12:31,841 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 14:12:33,493 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 14:12:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:35,171 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-10-27 14:12:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:12:35,172 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 71 [2020-10-27 14:12:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:35,174 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:12:35,174 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:12:35,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=303, Invalid=5247, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 14:12:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:12:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2020-10-27 14:12:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 14:12:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-10-27 14:12:35,191 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 71 [2020-10-27 14:12:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:35,192 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-10-27 14:12:35,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:12:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-10-27 14:12:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:12:35,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:35,193 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:35,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:12:35,193 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:35,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1797491403, now seen corresponding path program 12 times [2020-10-27 14:12:35,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:35,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26078790] [2020-10-27 14:12:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:40,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:12:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:12:40,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26078790] [2020-10-27 14:12:40,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:40,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:12:40,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869003] [2020-10-27 14:12:40,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:12:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:40,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:12:40,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:12:40,457 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 16 states. [2020-10-27 14:12:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:41,508 INFO L93 Difference]: Finished difference Result 189 states and 205 transitions. [2020-10-27 14:12:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:12:41,509 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-10-27 14:12:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:41,511 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:12:41,511 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:12:41,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:12:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:12:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 107. [2020-10-27 14:12:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 14:12:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-10-27 14:12:41,527 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 73 [2020-10-27 14:12:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:41,527 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-10-27 14:12:41,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:12:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-10-27 14:12:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:12:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:41,529 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:12:41,529 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1812143477, now seen corresponding path program 13 times [2020-10-27 14:12:41,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:41,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539851889] [2020-10-27 14:12:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:12:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:12:46,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539851889] [2020-10-27 14:12:46,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:46,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:12:46,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099222309] [2020-10-27 14:12:46,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:12:46,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:46,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:12:46,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:12:46,790 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 16 states. [2020-10-27 14:12:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:47,556 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-10-27 14:12:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:12:47,557 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-10-27 14:12:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:47,559 INFO L225 Difference]: With dead ends: 185 [2020-10-27 14:12:47,559 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 14:12:47,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:12:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 14:12:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2020-10-27 14:12:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:12:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 14:12:47,573 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 73 [2020-10-27 14:12:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:47,574 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 14:12:47,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:12:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 14:12:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:12:47,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:47,575 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:47,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:12:47,575 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1594043139, now seen corresponding path program 14 times [2020-10-27 14:12:47,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:47,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781228113] [2020-10-27 14:12:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:52,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:52,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:12:52,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 14:12:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:12:59,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781228113] [2020-10-27 14:12:59,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:59,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-27 14:12:59,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276619695] [2020-10-27 14:12:59,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-27 14:12:59,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-27 14:12:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3625, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 14:12:59,724 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 63 states. [2020-10-27 14:13:00,998 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-27 14:13:01,606 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 14:13:03,261 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-27 14:13:03,556 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-27 14:13:03,933 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-27 14:13:04,737 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 14:13:05,023 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-27 14:13:05,983 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-27 14:13:06,311 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 14:13:06,946 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 14:13:07,212 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 14:13:08,067 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-27 14:13:08,470 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-27 14:13:08,826 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-27 14:13:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:11,697 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2020-10-27 14:13:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-27 14:13:11,699 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 81 [2020-10-27 14:13:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:11,700 INFO L225 Difference]: With dead ends: 152 [2020-10-27 14:13:11,700 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:13:11,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=714, Invalid=9998, Unknown=0, NotChecked=0, Total=10712 [2020-10-27 14:13:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:13:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2020-10-27 14:13:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:13:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2020-10-27 14:13:11,725 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 81 [2020-10-27 14:13:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2020-10-27 14:13:11,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-27 14:13:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2020-10-27 14:13:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:13:11,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:11,727 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:11,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:13:11,727 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:11,728 INFO L82 PathProgramCache]: Analyzing trace with hash -44256769, now seen corresponding path program 15 times [2020-10-27 14:13:11,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759788458] [2020-10-27 14:13:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:16,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:13:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:17,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-27 14:13:17,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759788458] [2020-10-27 14:13:17,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:13:17,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773656867] [2020-10-27 14:13:17,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:13:17,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:17,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:13:17,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:13:17,031 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 18 states. [2020-10-27 14:13:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:18,790 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2020-10-27 14:13:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:13:18,791 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-27 14:13:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:18,792 INFO L225 Difference]: With dead ends: 196 [2020-10-27 14:13:18,792 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:13:18,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:13:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:13:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-10-27 14:13:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:13:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2020-10-27 14:13:18,813 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 83 [2020-10-27 14:13:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:18,814 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2020-10-27 14:13:18,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:13:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2020-10-27 14:13:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:13:18,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:18,815 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:18,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:13:18,815 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1518712257, now seen corresponding path program 16 times [2020-10-27 14:13:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:18,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446918006] [2020-10-27 14:13:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:13:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:13:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:13:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-27 14:13:24,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446918006] [2020-10-27 14:13:24,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:24,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:13:24,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773578094] [2020-10-27 14:13:24,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:13:24,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:24,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:13:24,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:13:24,160 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand 18 states. [2020-10-27 14:13:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:25,122 INFO L93 Difference]: Finished difference Result 209 states and 220 transitions. [2020-10-27 14:13:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:13:25,123 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-27 14:13:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:25,125 INFO L225 Difference]: With dead ends: 209 [2020-10-27 14:13:25,125 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 14:13:25,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:13:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 14:13:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2020-10-27 14:13:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:13:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:13:25,145 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 83 [2020-10-27 14:13:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:25,145 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:13:25,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:13:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:13:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:13:25,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:25,146 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:25,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:13:25,146 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1171466297, now seen corresponding path program 17 times [2020-10-27 14:13:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:25,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226502535] [2020-10-27 14:13:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5527 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 14:13:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:32,143 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-27 14:13:32,632 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-27 14:13:32,832 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-27 14:13:33,040 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-27 14:13:33,241 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-27 14:13:33,451 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-27 14:13:34,261 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-27 14:13:34,497 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-27 14:13:34,731 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-27 14:13:35,767 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-10-27 14:13:36,136 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-27 14:13:36,482 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-10-27 14:13:36,811 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-27 14:13:37,148 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-27 14:13:37,529 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-27 14:13:37,878 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-27 14:13:38,216 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-27 14:13:38,551 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-27 14:13:38,903 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-10-27 14:13:39,209 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-27 14:13:39,548 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-27 14:13:39,877 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-27 14:13:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 176 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 14:13:43,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226502535] [2020-10-27 14:13:43,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:43,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-27 14:13:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710725429] [2020-10-27 14:13:43,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-27 14:13:43,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-27 14:13:43,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3604, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 14:13:43,518 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 63 states. [2020-10-27 14:13:43,823 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 3 [2020-10-27 14:13:44,273 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 39 [2020-10-27 14:13:46,356 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 64 [2020-10-27 14:13:46,791 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 14:13:50,418 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 134 DAG size of output: 128 [2020-10-27 14:13:50,978 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-27 14:13:51,694 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-10-27 14:13:52,237 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-27 14:13:53,013 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-27 14:13:53,271 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 14:13:53,811 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-10-27 14:13:54,647 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2020-10-27 14:13:55,157 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-27 14:13:55,547 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-27 14:13:55,973 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-10-27 14:13:56,231 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-27 14:13:56,737 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-10-27 14:13:57,240 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-10-27 14:13:57,727 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-27 14:13:58,170 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-27 14:13:58,544 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-27 14:13:59,385 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-10-27 14:13:59,899 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 14:14:00,475 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 14:14:01,054 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2020-10-27 14:14:02,489 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 120 [2020-10-27 14:14:03,708 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 120 [2020-10-27 14:14:04,297 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 14:14:05,001 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-27 14:14:05,878 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-27 14:14:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:06,819 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2020-10-27 14:14:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-27 14:14:06,821 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 91 [2020-10-27 14:14:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:06,823 INFO L225 Difference]: With dead ends: 154 [2020-10-27 14:14:06,823 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:14:06,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=757, Invalid=8749, Unknown=0, NotChecked=0, Total=9506 [2020-10-27 14:14:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:14:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2020-10-27 14:14:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-27 14:14:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-10-27 14:14:06,850 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 91 [2020-10-27 14:14:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:06,850 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-10-27 14:14:06,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-27 14:14:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-10-27 14:14:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:14:06,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:06,852 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:06,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:14:06,852 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:06,853 INFO L82 PathProgramCache]: Analyzing trace with hash 463223369, now seen corresponding path program 18 times [2020-10-27 14:14:06,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:06,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148967293] [2020-10-27 14:14:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:11,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:11,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:14:11,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:14:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:14:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:14:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:14:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:12,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 14:14:12,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148967293] [2020-10-27 14:14:12,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:12,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:14:12,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722001320] [2020-10-27 14:14:12,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:14:12,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:12,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:14:12,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:14:12,511 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 20 states. [2020-10-27 14:14:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:14,708 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2020-10-27 14:14:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:14:14,719 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-27 14:14:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:14,721 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:14:14,721 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 14:14:14,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:14:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 14:14:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2020-10-27 14:14:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 14:14:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2020-10-27 14:14:14,749 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 93 [2020-10-27 14:14:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:14,750 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2020-10-27 14:14:14,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:14:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2020-10-27 14:14:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:14:14,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:14,751 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:14,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:14:14,752 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:14,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1038224139, now seen corresponding path program 19 times [2020-10-27 14:14:14,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:14,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540835001] [2020-10-27 14:14:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:14:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:14:19,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:14:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:14:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:14:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:20,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-27 14:14:20,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540835001] [2020-10-27 14:14:20,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:20,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:14:20,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287222839] [2020-10-27 14:14:20,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:14:20,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:20,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:14:20,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:14:20,253 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand 20 states. [2020-10-27 14:14:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:22,301 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-10-27 14:14:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:14:22,304 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 95 [2020-10-27 14:14:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:22,306 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:14:22,306 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:14:22,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:14:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:14:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-27 14:14:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 14:14:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-27 14:14:22,324 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 95 [2020-10-27 14:14:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:22,324 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-27 14:14:22,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:14:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-27 14:14:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:14:22,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:22,326 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:22,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:14:22,326 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2095798767, now seen corresponding path program 20 times [2020-10-27 14:14:22,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:22,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028608442] [2020-10-27 14:14:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:28,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 14:14:28,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5882 [2020-10-27 14:14:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-27 14:14:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:14:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:14:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:29,991 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-27 14:14:30,292 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 14:14:30,630 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-27 14:14:30,969 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-27 14:14:31,303 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-27 14:14:31,686 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-27 14:14:32,103 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-27 14:14:32,476 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-27 14:14:32,807 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-27 14:14:33,356 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2020-10-27 14:14:33,834 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2020-10-27 14:14:34,306 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-27 14:14:34,772 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-27 14:14:35,246 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-27 14:14:35,733 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-10-27 14:14:36,228 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-27 14:14:36,757 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-27 14:14:37,325 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-27 14:14:38,020 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-27 14:14:38,769 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-27 14:14:39,436 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-27 14:14:40,125 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-27 14:14:40,875 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-27 14:14:41,693 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2020-10-27 14:14:42,392 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-27 14:14:43,389 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2020-10-27 14:14:44,292 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2020-10-27 14:14:45,223 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-27 14:14:46,103 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2020-10-27 14:14:46,938 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57