/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/eca-rers2012/Problem03_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:43:23,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:43:23,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:43:23,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:43:23,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:43:23,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:43:23,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:43:23,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:43:23,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:43:23,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:43:23,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:43:23,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:43:23,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:43:23,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:43:23,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:43:23,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:43:23,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:43:23,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:43:23,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:43:23,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:43:23,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:43:23,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:43:23,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:43:23,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:43:23,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:43:23,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:43:23,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:43:23,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:43:23,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:43:23,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:43:23,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:43:23,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:43:23,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:43:23,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:43:23,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:43:23,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:43:23,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:43:23,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:43:23,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:43:23,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:43:23,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:43:23,260 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 15:43:23,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:43:23,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:43:23,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:43:23,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:43:23,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:43:23,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:43:23,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:43:23,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:43:23,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:43:23,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:43:23,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:43:23,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:43:23,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:43:23,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:43:23,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:43:23,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:43:23,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:43:23,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:43:23,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:43:23,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:43:23,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:43:23,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:43:23,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:43:23,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:43:23,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:43:23,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:43:23,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:43:23,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:43:23,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:43:23,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:43:23,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:43:23,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:43:23,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:43:23,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:43:23,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:43:23,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2020-10-27 15:43:23,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbcb6af49/cd162e91f26947a585d4b5bc346b46b7/FLAG8a39a4e32 [2020-10-27 15:43:24,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:43:24,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2020-10-27 15:43:24,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbcb6af49/cd162e91f26947a585d4b5bc346b46b7/FLAG8a39a4e32 [2020-10-27 15:43:24,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbcb6af49/cd162e91f26947a585d4b5bc346b46b7 [2020-10-27 15:43:24,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:43:24,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:43:24,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:24,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:43:24,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:43:24,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:24" (1/1) ... [2020-10-27 15:43:24,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5388bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:24, skipping insertion in model container [2020-10-27 15:43:24,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:24" (1/1) ... [2020-10-27 15:43:24,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:43:24,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:43:25,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:25,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:43:25,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:26,017 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:43:26,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26 WrapperNode [2020-10-27 15:43:26,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:26,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:43:26,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:43:26,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:43:26,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (1/1) ... [2020-10-27 15:43:26,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:43:26,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:43:26,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:43:26,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:43:26,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (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 15:43:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:43:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:43:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:43:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:43:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:43:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:43:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:43:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:43:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:43:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:43:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:43:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:43:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:43:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:43:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:43:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:43:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:43:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:43:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:43:28,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:43:28,743 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:43:28,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:28 BoogieIcfgContainer [2020-10-27 15:43:28,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:43:28,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:43:28,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:43:28,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:43:28,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:43:24" (1/3) ... [2020-10-27 15:43:28,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b51705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:28, skipping insertion in model container [2020-10-27 15:43:28,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:26" (2/3) ... [2020-10-27 15:43:28,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b51705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:28, skipping insertion in model container [2020-10-27 15:43:28,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:28" (3/3) ... [2020-10-27 15:43:28,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label25.c [2020-10-27 15:43:28,768 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:43:28,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:43:28,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:43:28,816 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:43:28,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:43:28,817 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:43:28,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:43:28,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:43:28,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:43:28,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:43:28,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:43:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:43:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 15:43:28,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:28,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:28,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:28,873 INFO L82 PathProgramCache]: Analyzing trace with hash 338954516, now seen corresponding path program 1 times [2020-10-27 15:43:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:28,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128491617] [2020-10-27 15:43:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:33,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:33,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 15:43:33,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-10-27 15:43:33,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:43:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:43:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 15:43:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:43:34,444 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:34,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 15:43:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:43:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:34,623 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 15:43:34,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128491617] [2020-10-27 15:43:34,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:43:34,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:43:34,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859620685] [2020-10-27 15:43:34,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:43:34,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:34,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:43:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:43:34,662 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 15:43:34,997 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:38,843 INFO L93 Difference]: Finished difference Result 844 states and 1491 transitions. [2020-10-27 15:43:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:38,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-10-27 15:43:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:38,863 INFO L225 Difference]: With dead ends: 844 [2020-10-27 15:43:38,863 INFO L226 Difference]: Without dead ends: 465 [2020-10-27 15:43:38,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-27 15:43:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 461. [2020-10-27 15:43:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-27 15:43:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 652 transitions. [2020-10-27 15:43:38,963 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 652 transitions. Word has length 187 [2020-10-27 15:43:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:38,964 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 652 transitions. [2020-10-27 15:43:38,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:43:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 652 transitions. [2020-10-27 15:43:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 15:43:38,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:38,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:38,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:43:38,973 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:38,974 INFO L82 PathProgramCache]: Analyzing trace with hash 753448789, now seen corresponding path program 1 times [2020-10-27 15:43:38,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:38,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449112628] [2020-10-27 15:43:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 15:43:42,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:43:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-10-27 15:43:42,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 15:43:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 15:43:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:42,896 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:42,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:43:42,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:42,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:43:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:43,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:43:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:43:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:43:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:43,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449112628] [2020-10-27 15:43:43,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:43,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:43,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685356141] [2020-10-27 15:43:43,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:43,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:43,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:43,240 INFO L87 Difference]: Start difference. First operand 461 states and 652 transitions. Second operand 5 states. [2020-10-27 15:43:43,520 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:46,737 INFO L93 Difference]: Finished difference Result 1358 states and 1949 transitions. [2020-10-27 15:43:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:46,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-27 15:43:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:46,755 INFO L225 Difference]: With dead ends: 1358 [2020-10-27 15:43:46,756 INFO L226 Difference]: Without dead ends: 903 [2020-10-27 15:43:46,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-27 15:43:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 885. [2020-10-27 15:43:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-27 15:43:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1233 transitions. [2020-10-27 15:43:46,876 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1233 transitions. Word has length 199 [2020-10-27 15:43:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:46,877 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 1233 transitions. [2020-10-27 15:43:46,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1233 transitions. [2020-10-27 15:43:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 15:43:46,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:46,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:46,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:43:46,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:46,897 INFO L82 PathProgramCache]: Analyzing trace with hash -512711076, now seen corresponding path program 1 times [2020-10-27 15:43:46,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:46,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141778219] [2020-10-27 15:43:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 15:43:52,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:43:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 15:43:52,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:43:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 15:43:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:52,522 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:43:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:52,680 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:43:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:43:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:43:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:43:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:43:52,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:43:52,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:43:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:43:53,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141778219] [2020-10-27 15:43:53,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:53,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:53,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472973751] [2020-10-27 15:43:53,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:53,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:53,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:53,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:53,013 INFO L87 Difference]: Start difference. First operand 885 states and 1233 transitions. Second operand 5 states. [2020-10-27 15:43:53,436 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:56,414 INFO L93 Difference]: Finished difference Result 2617 states and 3700 transitions. [2020-10-27 15:43:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:56,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 15:43:56,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:56,438 INFO L225 Difference]: With dead ends: 2617 [2020-10-27 15:43:56,438 INFO L226 Difference]: Without dead ends: 1738 [2020-10-27 15:43:56,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-10-27 15:43:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1732. [2020-10-27 15:43:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2020-10-27 15:43:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2319 transitions. [2020-10-27 15:43:56,553 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2319 transitions. Word has length 217 [2020-10-27 15:43:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:56,555 INFO L481 AbstractCegarLoop]: Abstraction has 1732 states and 2319 transitions. [2020-10-27 15:43:56,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2319 transitions. [2020-10-27 15:43:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 15:43:56,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:56,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:56,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:43:56,569 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2109273196, now seen corresponding path program 1 times [2020-10-27 15:43:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223912898] [2020-10-27 15:43:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-27 15:44:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4791 [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 15:44:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:01,747 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:44:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:01,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:01,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:44:01,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:01,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:01,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:01,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:01,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:44:01,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:44:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 15:44:02,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223912898] [2020-10-27 15:44:02,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:02,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:02,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370011129] [2020-10-27 15:44:02,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:02,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:02,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:02,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:02,104 INFO L87 Difference]: Start difference. First operand 1732 states and 2319 transitions. Second operand 5 states. [2020-10-27 15:44:02,514 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:44:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:05,924 INFO L93 Difference]: Finished difference Result 5148 states and 7027 transitions. [2020-10-27 15:44:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:05,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 15:44:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:05,946 INFO L225 Difference]: With dead ends: 5148 [2020-10-27 15:44:05,947 INFO L226 Difference]: Without dead ends: 3422 [2020-10-27 15:44:05,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:05,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2020-10-27 15:44:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3407. [2020-10-27 15:44:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2020-10-27 15:44:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4471 transitions. [2020-10-27 15:44:06,088 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4471 transitions. Word has length 225 [2020-10-27 15:44:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:06,089 INFO L481 AbstractCegarLoop]: Abstraction has 3407 states and 4471 transitions. [2020-10-27 15:44:06,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4471 transitions. [2020-10-27 15:44:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 15:44:06,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:06,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:06,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:44:06,104 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:06,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1446522075, now seen corresponding path program 1 times [2020-10-27 15:44:06,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:06,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906814379] [2020-10-27 15:44:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:06,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 15:44:11,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:44:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 15:44:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 15:44:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 15:44:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:11,597 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:11,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:11,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:11,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:44:11,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:11,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:44:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:44:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:44:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:44:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 15:44:11,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906814379] [2020-10-27 15:44:11,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:11,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:11,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797760967] [2020-10-27 15:44:11,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:11,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:11,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:11,913 INFO L87 Difference]: Start difference. First operand 3407 states and 4471 transitions. Second operand 5 states. [2020-10-27 15:44:12,318 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:15,887 INFO L93 Difference]: Finished difference Result 8487 states and 11659 transitions. [2020-10-27 15:44:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:15,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-27 15:44:15,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:15,922 INFO L225 Difference]: With dead ends: 8487 [2020-10-27 15:44:15,922 INFO L226 Difference]: Without dead ends: 5086 [2020-10-27 15:44:15,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2020-10-27 15:44:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5080. [2020-10-27 15:44:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5080 states. [2020-10-27 15:44:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 6954 transitions. [2020-10-27 15:44:16,118 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 6954 transitions. Word has length 236 [2020-10-27 15:44:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:16,119 INFO L481 AbstractCegarLoop]: Abstraction has 5080 states and 6954 transitions. [2020-10-27 15:44:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 6954 transitions. [2020-10-27 15:44:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-27 15:44:16,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:16,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:16,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:44:16,140 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1898964798, now seen corresponding path program 1 times [2020-10-27 15:44:16,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:16,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947896431] [2020-10-27 15:44:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 15:44:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-27 15:44:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:21,924 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:21,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:44:21,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:44:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:22,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:22,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 15:44:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:22,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:22,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:44:22,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 15:44:22,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 15:44:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 79 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 15:44:22,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947896431] [2020-10-27 15:44:22,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:22,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:22,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748995639] [2020-10-27 15:44:22,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:22,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:22,837 INFO L87 Difference]: Start difference. First operand 5080 states and 6954 transitions. Second operand 5 states. [2020-10-27 15:44:24,197 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 15:44:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:26,571 INFO L93 Difference]: Finished difference Result 10308 states and 14243 transitions. [2020-10-27 15:44:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:26,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-27 15:44:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:26,599 INFO L225 Difference]: With dead ends: 10308 [2020-10-27 15:44:26,599 INFO L226 Difference]: Without dead ends: 5127 [2020-10-27 15:44:26,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2020-10-27 15:44:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5123. [2020-10-27 15:44:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5123 states. [2020-10-27 15:44:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 7012 transitions. [2020-10-27 15:44:26,806 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 7012 transitions. Word has length 272 [2020-10-27 15:44:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:26,806 INFO L481 AbstractCegarLoop]: Abstraction has 5123 states and 7012 transitions. [2020-10-27 15:44:26,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 7012 transitions. [2020-10-27 15:44:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 15:44:26,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:26,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:26,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:44:26,830 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 672549154, now seen corresponding path program 1 times [2020-10-27 15:44:26,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:26,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492901331] [2020-10-27 15:44:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 15:44:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:32,445 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:32,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:32,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:44:32,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:32,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:44:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 15:44:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:44:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 88 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 15:44:33,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492901331] [2020-10-27 15:44:33,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:33,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:44:33,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213466407] [2020-10-27 15:44:33,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:44:33,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:44:33,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:33,125 INFO L87 Difference]: Start difference. First operand 5123 states and 7012 transitions. Second operand 6 states. [2020-10-27 15:44:33,364 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:35,635 INFO L93 Difference]: Finished difference Result 10243 states and 14051 transitions. [2020-10-27 15:44:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:35,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 280 [2020-10-27 15:44:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:35,662 INFO L225 Difference]: With dead ends: 10243 [2020-10-27 15:44:35,663 INFO L226 Difference]: Without dead ends: 5126 [2020-10-27 15:44:35,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2020-10-27 15:44:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 5122. [2020-10-27 15:44:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5122 states. [2020-10-27 15:44:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5122 states to 5122 states and 7010 transitions. [2020-10-27 15:44:35,845 INFO L78 Accepts]: Start accepts. Automaton has 5122 states and 7010 transitions. Word has length 280 [2020-10-27 15:44:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:35,846 INFO L481 AbstractCegarLoop]: Abstraction has 5122 states and 7010 transitions. [2020-10-27 15:44:35,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:44:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5122 states and 7010 transitions. [2020-10-27 15:44:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-27 15:44:35,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:35,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:35,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:44:35,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:35,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1218933587, now seen corresponding path program 1 times [2020-10-27 15:44:35,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:35,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840366655] [2020-10-27 15:44:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:35,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-27 15:44:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4611 [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:44:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:40,873 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:40,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:40,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:40,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:44:40,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:41,015 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:44:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:41,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:44:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:41,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:41,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:41,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 15:44:41,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:41,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:44:41,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:44:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:44:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:41,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:44:41,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 15:44:41,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:44:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:44:41,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840366655] [2020-10-27 15:44:41,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:41,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:41,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51599082] [2020-10-27 15:44:41,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:41,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:41,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:41,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:41,404 INFO L87 Difference]: Start difference. First operand 5122 states and 7010 transitions. Second operand 7 states. [2020-10-27 15:44:41,821 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:42,440 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:45,597 INFO L93 Difference]: Finished difference Result 10360 states and 14412 transitions. [2020-10-27 15:44:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:44:45,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-27 15:44:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:45,636 INFO L225 Difference]: With dead ends: 10360 [2020-10-27 15:44:45,637 INFO L226 Difference]: Without dead ends: 5244 [2020-10-27 15:44:45,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:44:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2020-10-27 15:44:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 5200. [2020-10-27 15:44:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5200 states. [2020-10-27 15:44:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 6609 transitions. [2020-10-27 15:44:45,861 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 6609 transitions. Word has length 284 [2020-10-27 15:44:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:45,862 INFO L481 AbstractCegarLoop]: Abstraction has 5200 states and 6609 transitions. [2020-10-27 15:44:45,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:44:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 6609 transitions. [2020-10-27 15:44:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 15:44:45,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:45,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:45,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:44:45,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 866424761, now seen corresponding path program 1 times [2020-10-27 15:44:45,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:45,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188501636] [2020-10-27 15:44:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:51,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:44:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:51,345 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:51,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:44:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:44:51,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:44:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:51,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 15:44:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:44:51,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188501636] [2020-10-27 15:44:51,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:51,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:51,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664759457] [2020-10-27 15:44:51,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:51,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:51,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:51,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:51,815 INFO L87 Difference]: Start difference. First operand 5200 states and 6609 transitions. Second operand 5 states. [2020-10-27 15:44:52,062 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:54,919 INFO L93 Difference]: Finished difference Result 14637 states and 18880 transitions. [2020-10-27 15:44:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:54,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-27 15:44:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:54,952 INFO L225 Difference]: With dead ends: 14637 [2020-10-27 15:44:54,952 INFO L226 Difference]: Without dead ends: 9443 [2020-10-27 15:44:54,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2020-10-27 15:44:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 8596. [2020-10-27 15:44:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-27 15:44:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 10825 transitions. [2020-10-27 15:44:55,216 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 10825 transitions. Word has length 285 [2020-10-27 15:44:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:55,217 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 10825 transitions. [2020-10-27 15:44:55,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 10825 transitions. [2020-10-27 15:44:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-27 15:44:55,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:55,252 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:55,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:44:55,252 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash -623614617, now seen corresponding path program 1 times [2020-10-27 15:44:55,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:55,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125668519] [2020-10-27 15:44:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:57,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 15:45:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:00,642 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:45:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:45:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:45:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:01,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:45:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 15:45:01,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125668519] [2020-10-27 15:45:01,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:01,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:01,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178589759] [2020-10-27 15:45:01,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:01,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:01,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:01,139 INFO L87 Difference]: Start difference. First operand 8596 states and 10825 transitions. Second operand 7 states. [2020-10-27 15:45:01,733 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:45:03,505 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:06,055 INFO L93 Difference]: Finished difference Result 24162 states and 32660 transitions. [2020-10-27 15:45:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:06,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-27 15:45:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:06,134 INFO L225 Difference]: With dead ends: 24162 [2020-10-27 15:45:06,135 INFO L226 Difference]: Without dead ends: 15572 [2020-10-27 15:45:06,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15572 states. [2020-10-27 15:45:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15572 to 14833. [2020-10-27 15:45:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14833 states. [2020-10-27 15:45:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14833 states to 14833 states and 18815 transitions. [2020-10-27 15:45:06,705 INFO L78 Accepts]: Start accepts. Automaton has 14833 states and 18815 transitions. Word has length 294 [2020-10-27 15:45:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:06,706 INFO L481 AbstractCegarLoop]: Abstraction has 14833 states and 18815 transitions. [2020-10-27 15:45:06,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14833 states and 18815 transitions. [2020-10-27 15:45:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-27 15:45:06,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:06,762 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:06,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:45:06,762 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1564932650, now seen corresponding path program 1 times [2020-10-27 15:45:06,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:06,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825177876] [2020-10-27 15:45:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:11,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 15:45:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:45:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 15:45:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 15:45:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 15:45:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,131 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:12,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:45:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 15:45:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:45:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:45:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:45:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:45:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:45:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:45:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-27 15:45:12,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825177876] [2020-10-27 15:45:12,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:12,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:12,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463557701] [2020-10-27 15:45:12,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:12,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:12,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:12,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:12,786 INFO L87 Difference]: Start difference. First operand 14833 states and 18815 transitions. Second operand 7 states. [2020-10-27 15:45:13,071 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:13,718 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:16,602 INFO L93 Difference]: Finished difference Result 32751 states and 42021 transitions. [2020-10-27 15:45:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:16,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-27 15:45:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:16,664 INFO L225 Difference]: With dead ends: 32751 [2020-10-27 15:45:16,664 INFO L226 Difference]: Without dead ends: 17924 [2020-10-27 15:45:16,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2020-10-27 15:45:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 17863. [2020-10-27 15:45:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17863 states. [2020-10-27 15:45:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17863 states to 17863 states and 22681 transitions. [2020-10-27 15:45:17,174 INFO L78 Accepts]: Start accepts. Automaton has 17863 states and 22681 transitions. Word has length 308 [2020-10-27 15:45:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:17,175 INFO L481 AbstractCegarLoop]: Abstraction has 17863 states and 22681 transitions. [2020-10-27 15:45:17,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 17863 states and 22681 transitions. [2020-10-27 15:45:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 15:45:17,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:17,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:17,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:45:17,225 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash -217665680, now seen corresponding path program 1 times [2020-10-27 15:45:17,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:17,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976479923] [2020-10-27 15:45:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:22,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:45:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:22,606 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:22,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:22,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:22,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:45:22,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:45:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:22,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:22,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:45:22,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:45:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:22,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 15:45:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:45:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:45:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:45:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:45:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-27 15:45:23,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976479923] [2020-10-27 15:45:23,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:23,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:23,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896368356] [2020-10-27 15:45:23,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:23,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:23,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:23,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:23,430 INFO L87 Difference]: Start difference. First operand 17863 states and 22681 transitions. Second operand 7 states. [2020-10-27 15:45:23,804 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:45:24,202 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:29,347 INFO L93 Difference]: Finished difference Result 41350 states and 56185 transitions. [2020-10-27 15:45:29,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:29,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-27 15:45:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:29,440 INFO L225 Difference]: With dead ends: 41350 [2020-10-27 15:45:29,440 INFO L226 Difference]: Without dead ends: 23493 [2020-10-27 15:45:29,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2020-10-27 15:45:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 23040. [2020-10-27 15:45:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23040 states. [2020-10-27 15:45:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23040 states to 23040 states and 28926 transitions. [2020-10-27 15:45:30,151 INFO L78 Accepts]: Start accepts. Automaton has 23040 states and 28926 transitions. Word has length 310 [2020-10-27 15:45:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:30,151 INFO L481 AbstractCegarLoop]: Abstraction has 23040 states and 28926 transitions. [2020-10-27 15:45:30,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23040 states and 28926 transitions. [2020-10-27 15:45:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 15:45:30,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:30,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:30,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:45:30,190 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash -48341385, now seen corresponding path program 1 times [2020-10-27 15:45:30,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:30,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940639651] [2020-10-27 15:45:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:32,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:45:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,609 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:45:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,737 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:45:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:45:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 15:45:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:35,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:45:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 15:45:36,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940639651] [2020-10-27 15:45:36,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:36,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:36,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652538221] [2020-10-27 15:45:36,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:36,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:36,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:36,308 INFO L87 Difference]: Start difference. First operand 23040 states and 28926 transitions. Second operand 7 states. [2020-10-27 15:45:36,711 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:37,129 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:43,302 INFO L93 Difference]: Finished difference Result 70351 states and 96311 transitions. [2020-10-27 15:45:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:43,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-27 15:45:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:43,490 INFO L225 Difference]: With dead ends: 70351 [2020-10-27 15:45:43,491 INFO L226 Difference]: Without dead ends: 47980 [2020-10-27 15:45:43,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47980 states. [2020-10-27 15:45:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47980 to 46470. [2020-10-27 15:45:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46470 states. [2020-10-27 15:45:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46470 states to 46470 states and 57879 transitions. [2020-10-27 15:45:44,799 INFO L78 Accepts]: Start accepts. Automaton has 46470 states and 57879 transitions. Word has length 321 [2020-10-27 15:45:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:44,800 INFO L481 AbstractCegarLoop]: Abstraction has 46470 states and 57879 transitions. [2020-10-27 15:45:44,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 46470 states and 57879 transitions. [2020-10-27 15:45:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 15:45:44,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:44,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:44,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:45:44,882 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash -355505885, now seen corresponding path program 1 times [2020-10-27 15:45:44,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:44,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490139759] [2020-10-27 15:45:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 15:45:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:45:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,278 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:50,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:45:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:45:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 15:45:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 15:45:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:45:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 15:45:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:45:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 15:45:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 181 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 15:45:50,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490139759] [2020-10-27 15:45:50,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:50,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:50,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469721462] [2020-10-27 15:45:50,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:50,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:50,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:50,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:50,818 INFO L87 Difference]: Start difference. First operand 46470 states and 57879 transitions. Second operand 7 states. [2020-10-27 15:45:51,092 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:52,293 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:55,505 INFO L93 Difference]: Finished difference Result 91994 states and 115589 transitions. [2020-10-27 15:45:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:45:55,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-27 15:45:55,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:55,688 INFO L225 Difference]: With dead ends: 91994 [2020-10-27 15:45:55,688 INFO L226 Difference]: Without dead ends: 46631 [2020-10-27 15:45:55,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46631 states. [2020-10-27 15:45:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46631 to 46488. [2020-10-27 15:45:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46488 states. [2020-10-27 15:45:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46488 states to 46488 states and 56275 transitions. [2020-10-27 15:45:57,200 INFO L78 Accepts]: Start accepts. Automaton has 46488 states and 56275 transitions. Word has length 341 [2020-10-27 15:45:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:57,201 INFO L481 AbstractCegarLoop]: Abstraction has 46488 states and 56275 transitions. [2020-10-27 15:45:57,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 46488 states and 56275 transitions. [2020-10-27 15:45:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-27 15:45:57,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:57,458 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:57,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:45:57,458 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:57,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1828469385, now seen corresponding path program 1 times [2020-10-27 15:45:57,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:57,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407946853] [2020-10-27 15:45:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 15:46:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:46:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:02,861 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:02,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:46:02,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:46:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:46:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:03,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:46:03,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 15:46:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:46:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 15:46:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:03,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:46:03,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:03,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 15:46:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:46:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 15:46:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:03,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:46:03,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 15:46:03,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 15:46:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 216 proven. 16 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-27 15:46:03,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407946853] [2020-10-27 15:46:03,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:03,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:03,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792046774] [2020-10-27 15:46:03,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:03,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:03,462 INFO L87 Difference]: Start difference. First operand 46488 states and 56275 transitions. Second operand 7 states. [2020-10-27 15:46:03,765 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:46:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:06,164 INFO L93 Difference]: Finished difference Result 77030 states and 92887 transitions. [2020-10-27 15:46:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:46:06,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-27 15:46:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:06,383 INFO L225 Difference]: With dead ends: 77030 [2020-10-27 15:46:06,383 INFO L226 Difference]: Without dead ends: 31639 [2020-10-27 15:46:06,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:46:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31639 states. [2020-10-27 15:46:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31639 to 30357. [2020-10-27 15:46:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30357 states. [2020-10-27 15:46:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30357 states to 30357 states and 35588 transitions. [2020-10-27 15:46:07,149 INFO L78 Accepts]: Start accepts. Automaton has 30357 states and 35588 transitions. Word has length 356 [2020-10-27 15:46:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:07,149 INFO L481 AbstractCegarLoop]: Abstraction has 30357 states and 35588 transitions. [2020-10-27 15:46:07,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 30357 states and 35588 transitions. [2020-10-27 15:46:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-27 15:46:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:07,190 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:07,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:46:07,190 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash -408067336, now seen corresponding path program 1 times [2020-10-27 15:46:07,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:07,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893752878] [2020-10-27 15:46:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 15:46:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:46:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:12,614 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:12,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:12,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:46:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:12,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 15:46:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:12,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:46:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:12,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 15:46:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:13,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:13,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:46:13,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:46:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 15:46:13,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893752878] [2020-10-27 15:46:13,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:13,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:13,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377706335] [2020-10-27 15:46:13,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:13,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:13,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:13,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:13,291 INFO L87 Difference]: Start difference. First operand 30357 states and 35588 transitions. Second operand 7 states. [2020-10-27 15:46:13,596 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:46:14,711 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 15:46:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:16,900 INFO L93 Difference]: Finished difference Result 63029 states and 74052 transitions. [2020-10-27 15:46:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:46:16,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-27 15:46:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:16,988 INFO L225 Difference]: With dead ends: 63029 [2020-10-27 15:46:16,988 INFO L226 Difference]: Without dead ends: 34806 [2020-10-27 15:46:17,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:46:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34806 states. [2020-10-27 15:46:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34806 to 34097. [2020-10-27 15:46:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34097 states. [2020-10-27 15:46:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34097 states to 34097 states and 39049 transitions. [2020-10-27 15:46:17,853 INFO L78 Accepts]: Start accepts. Automaton has 34097 states and 39049 transitions. Word has length 397 [2020-10-27 15:46:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:17,853 INFO L481 AbstractCegarLoop]: Abstraction has 34097 states and 39049 transitions. [2020-10-27 15:46:17,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 34097 states and 39049 transitions. [2020-10-27 15:46:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-27 15:46:17,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:17,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:17,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:46:17,892 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:17,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1523205002, now seen corresponding path program 1 times [2020-10-27 15:46:17,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:17,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417671086] [2020-10-27 15:46:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:18,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:46:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:23,371 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:46:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:46:23,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:46:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 15:46:23,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 15:46:23,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 15:46:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:46:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 15:46:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:46:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 15:46:24,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417671086] [2020-10-27 15:46:24,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:24,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:24,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824507903] [2020-10-27 15:46:24,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:24,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:24,159 INFO L87 Difference]: Start difference. First operand 34097 states and 39049 transitions. Second operand 7 states. [2020-10-27 15:46:25,076 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:46:25,554 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:46:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:28,751 INFO L93 Difference]: Finished difference Result 78237 states and 96535 transitions. [2020-10-27 15:46:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:46:28,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-27 15:46:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:28,754 INFO L225 Difference]: With dead ends: 78237 [2020-10-27 15:46:28,754 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 15:46:28,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:46:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 15:46:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 15:46:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 15:46:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 15:46:28,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 470 [2020-10-27 15:46:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:28,913 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 15:46:28,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 15:46:28,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 15:46:28,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:46:28,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 15:46:29,155 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-27 15:46:30,460 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 15:46:32,534 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169