/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:18:01,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:18:01,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:18:02,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:18:02,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:18:02,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:18:02,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:18:02,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:18:02,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:18:02,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:18:02,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:18:02,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:18:02,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:18:02,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:18:02,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:18:02,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:18:02,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:18:02,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:18:02,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:18:02,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:18:02,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:18:02,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:18:02,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:18:02,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:18:02,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:18:02,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:18:02,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:18:02,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:18:02,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:18:02,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:18:02,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:18:02,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:18:02,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:18:02,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:18:02,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:18:02,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:18:02,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:18:02,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:18:02,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:18:02,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:18:02,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:18:02,138 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 04:18:02,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:18:02,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:18:02,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:18:02,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:18:02,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:18:02,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:18:02,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:18:02,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:18:02,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:18:02,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:18:02,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:18:02,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:18:02,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:18:02,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:18:02,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:18:02,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:18:02,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:18:02,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:18:02,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:18:02,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:18:02,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:18:02,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:18:02,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:18:02,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:18:02,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:18:02,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:18:02,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:18:02,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:18:02,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:18:02,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:18:02,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:18:02,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:18:02,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:18:02,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:18:02,610 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:18:02,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:18:02,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85b4bb28/d22ea058ecac493db3724a7412fad91e/FLAGd5fb6a2df [2020-10-27 04:18:03,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:18:03,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:18:03,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85b4bb28/d22ea058ecac493db3724a7412fad91e/FLAGd5fb6a2df [2020-10-27 04:18:03,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85b4bb28/d22ea058ecac493db3724a7412fad91e [2020-10-27 04:18:03,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:18:03,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:18:03,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:18:03,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:18:03,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:18:03,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:18:03" (1/1) ... [2020-10-27 04:18:03,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133bbfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:03, skipping insertion in model container [2020-10-27 04:18:03,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:18:03" (1/1) ... [2020-10-27 04:18:03,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:18:03,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:18:04,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:18:04,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:18:04,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:18:04,232 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:18:04,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04 WrapperNode [2020-10-27 04:18:04,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:18:04,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:18:04,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:18:04,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:18:04,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (1/1) ... [2020-10-27 04:18:04,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:18:04,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:18:04,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:18:04,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:18:04,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (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 04:18:04,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:18:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:18:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:18:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:18:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:18:04,439 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:18:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:18:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:18:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:18:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:18:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:18:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:18:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:18:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:18:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:18:05,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:18:05,309 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:18:05,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:05 BoogieIcfgContainer [2020-10-27 04:18:05,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:18:05,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:18:05,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:18:05,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:18:05,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:18:03" (1/3) ... [2020-10-27 04:18:05,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2c8408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:05, skipping insertion in model container [2020-10-27 04:18:05,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:04" (2/3) ... [2020-10-27 04:18:05,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2c8408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:05, skipping insertion in model container [2020-10-27 04:18:05,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:05" (3/3) ... [2020-10-27 04:18:05,320 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:18:05,332 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:18:05,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:18:05,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:18:05,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:18:05,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:18:05,380 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:18:05,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:18:05,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:18:05,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:18:05,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:18:05,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:18:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-27 04:18:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:18:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:05,415 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] [2020-10-27 04:18:05,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-27 04:18:05,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:05,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268285304] [2020-10-27 04:18:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:18:06,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-27 04:18:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:18:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:18:06,698 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:06,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:06,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:18:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:18:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:18:06,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:18:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:06,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:06,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:18:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:06,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:06,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:18:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:06,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:18:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:06,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:06,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:06,965 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 04:18:06,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268285304] [2020-10-27 04:18:06,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:06,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:18:06,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669057766] [2020-10-27 04:18:06,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:18:06,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:06,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:18:06,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:18:06,991 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-27 04:18:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:08,046 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-27 04:18:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:18:08,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 04:18:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:08,061 INFO L225 Difference]: With dead ends: 263 [2020-10-27 04:18:08,061 INFO L226 Difference]: Without dead ends: 163 [2020-10-27 04:18:08,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-27 04:18:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-27 04:18:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 04:18:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-27 04:18:08,129 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-27 04:18:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:08,130 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-27 04:18:08,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:18:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-27 04:18:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:18:08,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:08,133 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] [2020-10-27 04:18:08,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:18:08,134 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-27 04:18:08,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:08,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456406730] [2020-10-27 04:18:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:18:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,136 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:09,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:18:09,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:18:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:18:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 04:18:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:18:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:18:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:09,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:18:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:18:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:09,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:18:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:09,477 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 04:18:09,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456406730] [2020-10-27 04:18:09,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:09,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:18:09,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519086808] [2020-10-27 04:18:09,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:18:09,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:18:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:18:09,481 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-27 04:18:10,032 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:10,359 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:18:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:11,815 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-27 04:18:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:18:11,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 04:18:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:11,820 INFO L225 Difference]: With dead ends: 264 [2020-10-27 04:18:11,821 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 04:18:11,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:18:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 04:18:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-27 04:18:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 04:18:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-27 04:18:11,847 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-27 04:18:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:11,847 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-27 04:18:11,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:18:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-27 04:18:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:18:11,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:11,850 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] [2020-10-27 04:18:11,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:18:11,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:11,851 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-27 04:18:11,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:11,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21254330] [2020-10-27 04:18:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:16,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:16,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:18:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:18:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:18:16,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 04:18:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:17,169 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:18:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:17,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 04:18:17,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:18:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:18:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:18:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:18:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:18:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:18:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:17,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:17,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:18:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:17,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:17,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:17,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:17,525 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 04:18:17,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21254330] [2020-10-27 04:18:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:17,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:17,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791382043] [2020-10-27 04:18:17,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:17,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:17,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:17,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:17,533 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 9 states. [2020-10-27 04:18:17,827 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:18:19,936 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:20,486 INFO L93 Difference]: Finished difference Result 350 states and 523 transitions. [2020-10-27 04:18:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:18:20,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 04:18:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:20,495 INFO L225 Difference]: With dead ends: 350 [2020-10-27 04:18:20,496 INFO L226 Difference]: Without dead ends: 264 [2020-10-27 04:18:20,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:18:20,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-27 04:18:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 227. [2020-10-27 04:18:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-27 04:18:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 330 transitions. [2020-10-27 04:18:20,562 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 330 transitions. Word has length 85 [2020-10-27 04:18:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:20,562 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 330 transitions. [2020-10-27 04:18:20,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 330 transitions. [2020-10-27 04:18:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:18:20,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:20,568 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] [2020-10-27 04:18:20,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:18:20,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:20,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1924413294, now seen corresponding path program 1 times [2020-10-27 04:18:20,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:20,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172351194] [2020-10-27 04:18:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:25,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:25,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:18:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 04:18:25,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:18:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:25,967 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:18:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:18:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:26,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:18:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:26,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:18:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:26,322 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 04:18:26,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172351194] [2020-10-27 04:18:26,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:26,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:26,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610422113] [2020-10-27 04:18:26,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:26,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:26,327 INFO L87 Difference]: Start difference. First operand 227 states and 330 transitions. Second operand 9 states. [2020-10-27 04:18:26,597 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:26,890 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:18:27,282 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:27,578 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:28,310 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:30,215 INFO L93 Difference]: Finished difference Result 671 states and 980 transitions. [2020-10-27 04:18:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:18:30,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-27 04:18:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:30,225 INFO L225 Difference]: With dead ends: 671 [2020-10-27 04:18:30,225 INFO L226 Difference]: Without dead ends: 469 [2020-10-27 04:18:30,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:18:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-27 04:18:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 430. [2020-10-27 04:18:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-27 04:18:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 616 transitions. [2020-10-27 04:18:30,287 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 616 transitions. Word has length 87 [2020-10-27 04:18:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:30,288 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 616 transitions. [2020-10-27 04:18:30,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 616 transitions. [2020-10-27 04:18:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:18:30,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:30,290 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] [2020-10-27 04:18:30,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:18:30,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:30,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:30,291 INFO L82 PathProgramCache]: Analyzing trace with hash 5184968, now seen corresponding path program 1 times [2020-10-27 04:18:30,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:30,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850632164] [2020-10-27 04:18:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:18:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,627 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:35,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:35,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:35,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:35,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:18:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:18:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:18:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:18:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:35,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:35,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:35,917 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 04:18:35,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850632164] [2020-10-27 04:18:35,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:35,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:35,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395759654] [2020-10-27 04:18:35,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:35,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:35,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:35,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:35,920 INFO L87 Difference]: Start difference. First operand 430 states and 616 transitions. Second operand 9 states. [2020-10-27 04:18:36,207 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:36,505 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:18:36,805 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:37,091 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:37,989 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:40,102 INFO L93 Difference]: Finished difference Result 1298 states and 1871 transitions. [2020-10-27 04:18:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:18:40,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-27 04:18:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:40,115 INFO L225 Difference]: With dead ends: 1298 [2020-10-27 04:18:40,115 INFO L226 Difference]: Without dead ends: 882 [2020-10-27 04:18:40,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:18:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2020-10-27 04:18:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 833. [2020-10-27 04:18:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-27 04:18:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1174 transitions. [2020-10-27 04:18:40,213 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1174 transitions. Word has length 87 [2020-10-27 04:18:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:40,214 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1174 transitions. [2020-10-27 04:18:40,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1174 transitions. [2020-10-27 04:18:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:18:40,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:40,223 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] [2020-10-27 04:18:40,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:18:40,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1581960701, now seen corresponding path program 1 times [2020-10-27 04:18:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:40,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875955312] [2020-10-27 04:18:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:18:45,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:45,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:18:45,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:18:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,583 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:18:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:18:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:45,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:45,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:18:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:18:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:18:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:46,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:46,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:18:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:46,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:46,051 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 04:18:46,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875955312] [2020-10-27 04:18:46,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:46,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:46,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998049467] [2020-10-27 04:18:46,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:46,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:46,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:46,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:46,056 INFO L87 Difference]: Start difference. First operand 833 states and 1174 transitions. Second operand 9 states. [2020-10-27 04:18:46,358 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:46,675 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:47,060 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:47,814 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:48,582 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:50,992 INFO L93 Difference]: Finished difference Result 2690 states and 3804 transitions. [2020-10-27 04:18:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:50,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 04:18:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:51,009 INFO L225 Difference]: With dead ends: 2690 [2020-10-27 04:18:51,009 INFO L226 Difference]: Without dead ends: 1999 [2020-10-27 04:18:51,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-10-27 04:18:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1943. [2020-10-27 04:18:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-27 04:18:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2698 transitions. [2020-10-27 04:18:51,198 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2698 transitions. Word has length 88 [2020-10-27 04:18:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:51,198 INFO L481 AbstractCegarLoop]: Abstraction has 1943 states and 2698 transitions. [2020-10-27 04:18:51,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2698 transitions. [2020-10-27 04:18:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:18:51,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:51,204 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] [2020-10-27 04:18:51,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:18:51,204 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1878847607, now seen corresponding path program 1 times [2020-10-27 04:18:51,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:51,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578387026] [2020-10-27 04:18:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:18:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:18:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,605 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:56,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:18:56,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:18:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:56,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:18:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:18:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:18:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:56,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:18:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:18:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:56,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:56,995 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 04:18:56,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578387026] [2020-10-27 04:18:56,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:56,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:56,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119991823] [2020-10-27 04:18:56,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:56,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:57,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:57,007 INFO L87 Difference]: Start difference. First operand 1943 states and 2698 transitions. Second operand 9 states. [2020-10-27 04:18:57,307 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:57,655 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:58,000 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:58,825 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:59,676 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:02,626 INFO L93 Difference]: Finished difference Result 6373 states and 9001 transitions. [2020-10-27 04:19:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:02,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 04:19:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:02,655 INFO L225 Difference]: With dead ends: 6373 [2020-10-27 04:19:02,656 INFO L226 Difference]: Without dead ends: 4726 [2020-10-27 04:19:02,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2020-10-27 04:19:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4620. [2020-10-27 04:19:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4620 states. [2020-10-27 04:19:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6375 transitions. [2020-10-27 04:19:03,034 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6375 transitions. Word has length 88 [2020-10-27 04:19:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:03,035 INFO L481 AbstractCegarLoop]: Abstraction has 4620 states and 6375 transitions. [2020-10-27 04:19:03,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6375 transitions. [2020-10-27 04:19:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:19:03,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:03,047 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] [2020-10-27 04:19:03,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:19:03,047 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:03,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1303567, now seen corresponding path program 1 times [2020-10-27 04:19:03,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:03,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340143844] [2020-10-27 04:19:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:03,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:19:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:19:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,373 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:08,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:19:08,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:19:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:19:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:19:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:19:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:19:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:19:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:19:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:08,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:08,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:08,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340143844] [2020-10-27 04:19:08,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:08,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:19:08,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396628047] [2020-10-27 04:19:08,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:19:08,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:08,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:19:08,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:19:08,883 INFO L87 Difference]: Start difference. First operand 4620 states and 6375 transitions. Second operand 14 states. [2020-10-27 04:19:09,270 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:09,596 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:10,157 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:10,663 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:19:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:13,419 INFO L93 Difference]: Finished difference Result 7715 states and 10892 transitions. [2020-10-27 04:19:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:19:13,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-27 04:19:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:13,458 INFO L225 Difference]: With dead ends: 7715 [2020-10-27 04:19:13,458 INFO L226 Difference]: Without dead ends: 6772 [2020-10-27 04:19:13,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:19:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2020-10-27 04:19:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 5418. [2020-10-27 04:19:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5418 states. [2020-10-27 04:19:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 7514 transitions. [2020-10-27 04:19:13,928 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 7514 transitions. Word has length 89 [2020-10-27 04:19:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:13,928 INFO L481 AbstractCegarLoop]: Abstraction has 5418 states and 7514 transitions. [2020-10-27 04:19:13,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:19:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 7514 transitions. [2020-10-27 04:19:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:19:13,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:13,940 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] [2020-10-27 04:19:13,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:19:13,940 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash 702903441, now seen corresponding path program 1 times [2020-10-27 04:19:13,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:13,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443330507] [2020-10-27 04:19:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:19:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:19:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:19,333 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:19,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:19:19,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:19:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 04:19:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:19:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:19:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:19:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:19:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:19:19,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:19,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:19:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:19:19,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:19:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:19,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:19,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:19,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:19,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:19,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:19,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:19,717 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 04:19:19,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443330507] [2020-10-27 04:19:19,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:19,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:19:19,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781306743] [2020-10-27 04:19:19,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:19:19,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:19:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:19:19,719 INFO L87 Difference]: Start difference. First operand 5418 states and 7514 transitions. Second operand 8 states. [2020-10-27 04:19:20,127 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:19:20,424 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:19:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:21,754 INFO L93 Difference]: Finished difference Result 6571 states and 9037 transitions. [2020-10-27 04:19:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:19:21,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-27 04:19:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:21,773 INFO L225 Difference]: With dead ends: 6571 [2020-10-27 04:19:21,773 INFO L226 Difference]: Without dead ends: 3988 [2020-10-27 04:19:21,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:19:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2020-10-27 04:19:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3887. [2020-10-27 04:19:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3887 states. [2020-10-27 04:19:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 5405 transitions. [2020-10-27 04:19:22,116 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 5405 transitions. Word has length 89 [2020-10-27 04:19:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:22,117 INFO L481 AbstractCegarLoop]: Abstraction has 3887 states and 5405 transitions. [2020-10-27 04:19:22,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:19:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 5405 transitions. [2020-10-27 04:19:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:19:22,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:22,125 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] [2020-10-27 04:19:22,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:19:22,125 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:22,125 INFO L82 PathProgramCache]: Analyzing trace with hash -662122186, now seen corresponding path program 1 times [2020-10-27 04:19:22,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:22,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617512041] [2020-10-27 04:19:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:19:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,520 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:19:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:19:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:19:27,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:19:27,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:19:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:19:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:19:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:19:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:27,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:27,997 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 04:19:27,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617512041] [2020-10-27 04:19:27,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:27,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:19:27,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250930122] [2020-10-27 04:19:27,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:19:27,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:27,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:19:27,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:19:27,999 INFO L87 Difference]: Start difference. First operand 3887 states and 5405 transitions. Second operand 14 states. [2020-10-27 04:19:28,657 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:19:28,953 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:29,570 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:30,382 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:19:30,562 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 04:19:30,771 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-27 04:19:30,970 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-27 04:19:31,338 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:19:31,736 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:19:32,546 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 04:19:32,851 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:19:33,178 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:19:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:33,321 INFO L93 Difference]: Finished difference Result 6276 states and 8922 transitions. [2020-10-27 04:19:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:19:33,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-27 04:19:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:33,349 INFO L225 Difference]: With dead ends: 6276 [2020-10-27 04:19:33,349 INFO L226 Difference]: Without dead ends: 5135 [2020-10-27 04:19:33,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:19:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5135 states. [2020-10-27 04:19:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5135 to 3845. [2020-10-27 04:19:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3845 states. [2020-10-27 04:19:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5323 transitions. [2020-10-27 04:19:33,727 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5323 transitions. Word has length 89 [2020-10-27 04:19:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:33,727 INFO L481 AbstractCegarLoop]: Abstraction has 3845 states and 5323 transitions. [2020-10-27 04:19:33,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:19:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5323 transitions. [2020-10-27 04:19:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:19:33,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:33,736 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] [2020-10-27 04:19:33,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:19:33,736 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:33,737 INFO L82 PathProgramCache]: Analyzing trace with hash -639489932, now seen corresponding path program 1 times [2020-10-27 04:19:33,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:33,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995822197] [2020-10-27 04:19:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3836 [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:19:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:19:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:37,885 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:37,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:37,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:19:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:19:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:19:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:19:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:38,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,146 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 04:19:38,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995822197] [2020-10-27 04:19:38,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:38,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:38,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480076648] [2020-10-27 04:19:38,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:38,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:38,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:38,152 INFO L87 Difference]: Start difference. First operand 3845 states and 5323 transitions. Second operand 9 states. [2020-10-27 04:19:38,440 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:19:41,011 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:19:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:41,272 INFO L93 Difference]: Finished difference Result 8854 states and 12511 transitions. [2020-10-27 04:19:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:19:41,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:19:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:41,304 INFO L225 Difference]: With dead ends: 8854 [2020-10-27 04:19:41,304 INFO L226 Difference]: Without dead ends: 6244 [2020-10-27 04:19:41,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:19:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2020-10-27 04:19:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 6049. [2020-10-27 04:19:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6049 states. [2020-10-27 04:19:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 8446 transitions. [2020-10-27 04:19:41,978 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 8446 transitions. Word has length 89 [2020-10-27 04:19:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:41,979 INFO L481 AbstractCegarLoop]: Abstraction has 6049 states and 8446 transitions. [2020-10-27 04:19:41,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 8446 transitions. [2020-10-27 04:19:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:19:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:41,990 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] [2020-10-27 04:19:41,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:19:41,990 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1987933020, now seen corresponding path program 1 times [2020-10-27 04:19:41,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:41,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493671992] [2020-10-27 04:19:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:19:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:19:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,298 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:47,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:19:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:19:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:47,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:19:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:19:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:19:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:47,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:19:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:47,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:47,636 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 04:19:47,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493671992] [2020-10-27 04:19:47,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:47,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573251230] [2020-10-27 04:19:47,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:47,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:47,638 INFO L87 Difference]: Start difference. First operand 6049 states and 8446 transitions. Second operand 9 states. [2020-10-27 04:19:47,990 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:48,314 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:48,702 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:19:49,286 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:19:50,337 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:53,984 INFO L93 Difference]: Finished difference Result 19046 states and 27032 transitions. [2020-10-27 04:19:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:53,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:19:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:54,040 INFO L225 Difference]: With dead ends: 19046 [2020-10-27 04:19:54,040 INFO L226 Difference]: Without dead ends: 13747 [2020-10-27 04:19:54,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13747 states. [2020-10-27 04:19:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13747 to 13482. [2020-10-27 04:19:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13482 states. [2020-10-27 04:19:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13482 states to 13482 states and 18680 transitions. [2020-10-27 04:19:55,431 INFO L78 Accepts]: Start accepts. Automaton has 13482 states and 18680 transitions. Word has length 91 [2020-10-27 04:19:55,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:55,432 INFO L481 AbstractCegarLoop]: Abstraction has 13482 states and 18680 transitions. [2020-10-27 04:19:55,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13482 states and 18680 transitions. [2020-10-27 04:19:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:19:55,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:55,454 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] [2020-10-27 04:19:55,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:19:55,454 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash -453136017, now seen corresponding path program 1 times [2020-10-27 04:19:55,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:55,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394820833] [2020-10-27 04:19:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:00,761 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:00,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:00,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:00,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:00,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:20:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:20:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:01,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:01,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:20:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:20:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:01,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:01,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:20:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:20:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:01,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:20:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:20:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:01,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:01,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:01,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:01,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:01,234 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 04:20:01,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394820833] [2020-10-27 04:20:01,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:01,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:01,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904647302] [2020-10-27 04:20:01,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:01,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:01,237 INFO L87 Difference]: Start difference. First operand 13482 states and 18680 transitions. Second operand 9 states. [2020-10-27 04:20:01,554 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:01,880 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:20:02,579 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:20:02,902 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:20:04,017 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:20:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:08,647 INFO L93 Difference]: Finished difference Result 37160 states and 52382 transitions. [2020-10-27 04:20:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:20:08,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:20:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:08,755 INFO L225 Difference]: With dead ends: 37160 [2020-10-27 04:20:08,755 INFO L226 Difference]: Without dead ends: 25871 [2020-10-27 04:20:08,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:20:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25871 states. [2020-10-27 04:20:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25871 to 25438. [2020-10-27 04:20:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25438 states. [2020-10-27 04:20:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25438 states to 25438 states and 34943 transitions. [2020-10-27 04:20:10,840 INFO L78 Accepts]: Start accepts. Automaton has 25438 states and 34943 transitions. Word has length 91 [2020-10-27 04:20:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:10,841 INFO L481 AbstractCegarLoop]: Abstraction has 25438 states and 34943 transitions. [2020-10-27 04:20:10,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25438 states and 34943 transitions. [2020-10-27 04:20:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:20:10,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:10,876 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] [2020-10-27 04:20:10,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:20:10,877 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash -346752119, now seen corresponding path program 1 times [2020-10-27 04:20:10,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:10,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827801830] [2020-10-27 04:20:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:20:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:20:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:20:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:20:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,201 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:20:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:20:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:20:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:16,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:16,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:20:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:20:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:20:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:16,522 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 04:20:16,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827801830] [2020-10-27 04:20:16,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:16,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:20:16,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205671788] [2020-10-27 04:20:16,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:20:16,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:20:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:20:16,523 INFO L87 Difference]: Start difference. First operand 25438 states and 34943 transitions. Second operand 8 states. [2020-10-27 04:20:16,907 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:20:17,223 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:20:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:19,719 INFO L93 Difference]: Finished difference Result 44350 states and 60830 transitions. [2020-10-27 04:20:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:20:19,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-27 04:20:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:19,794 INFO L225 Difference]: With dead ends: 44350 [2020-10-27 04:20:19,794 INFO L226 Difference]: Without dead ends: 19703 [2020-10-27 04:20:19,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:20:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-27 04:20:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19376. [2020-10-27 04:20:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19376 states. [2020-10-27 04:20:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19376 states to 19376 states and 26491 transitions. [2020-10-27 04:20:21,438 INFO L78 Accepts]: Start accepts. Automaton has 19376 states and 26491 transitions. Word has length 92 [2020-10-27 04:20:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:21,439 INFO L481 AbstractCegarLoop]: Abstraction has 19376 states and 26491 transitions. [2020-10-27 04:20:21,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:20:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 19376 states and 26491 transitions. [2020-10-27 04:20:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:20:21,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:21,465 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] [2020-10-27 04:20:21,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:20:21,465 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2011773328, now seen corresponding path program 1 times [2020-10-27 04:20:21,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:21,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127427138] [2020-10-27 04:20:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:20:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,835 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:20:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:20:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:20:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:27,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:20:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:27,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:20:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:27,139 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 04:20:27,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127427138] [2020-10-27 04:20:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:20:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067603154] [2020-10-27 04:20:27,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:20:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:20:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:20:27,141 INFO L87 Difference]: Start difference. First operand 19376 states and 26491 transitions. Second operand 8 states. [2020-10-27 04:20:27,461 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:20:27,777 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:20:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:29,825 INFO L93 Difference]: Finished difference Result 21797 states and 29684 transitions. [2020-10-27 04:20:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:20:29,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-27 04:20:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:29,861 INFO L225 Difference]: With dead ends: 21797 [2020-10-27 04:20:29,861 INFO L226 Difference]: Without dead ends: 11966 [2020-10-27 04:20:29,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:20:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2020-10-27 04:20:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11715. [2020-10-27 04:20:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11715 states. [2020-10-27 04:20:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11715 states to 11715 states and 15967 transitions. [2020-10-27 04:20:31,165 INFO L78 Accepts]: Start accepts. Automaton has 11715 states and 15967 transitions. Word has length 92 [2020-10-27 04:20:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:31,165 INFO L481 AbstractCegarLoop]: Abstraction has 11715 states and 15967 transitions. [2020-10-27 04:20:31,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:20:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11715 states and 15967 transitions. [2020-10-27 04:20:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:20:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:31,176 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] [2020-10-27 04:20:31,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:20:31,176 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1253412973, now seen corresponding path program 1 times [2020-10-27 04:20:31,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:31,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675985778] [2020-10-27 04:20:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:20:36,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:20:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:20:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:20:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 04:20:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,503 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:20:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:20:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:20:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:20:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:20:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:20:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:20:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:20:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:20:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:20:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:20:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:20:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:36,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:36,849 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 04:20:36,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675985778] [2020-10-27 04:20:36,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:36,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:20:36,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579463169] [2020-10-27 04:20:36,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:20:36,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:36,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:20:36,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:20:36,851 INFO L87 Difference]: Start difference. First operand 11715 states and 15967 transitions. Second operand 14 states. [2020-10-27 04:20:37,492 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:20:37,788 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:38,383 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:20:39,197 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:20:39,363 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:20:39,786 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-27 04:20:39,970 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 04:20:40,161 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-27 04:20:40,362 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-27 04:20:40,887 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:20:41,953 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:20:42,353 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-27 04:20:42,655 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-27 04:20:42,838 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:20:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:43,197 INFO L93 Difference]: Finished difference Result 18748 states and 25762 transitions. [2020-10-27 04:20:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:20:43,198 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-27 04:20:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:43,242 INFO L225 Difference]: With dead ends: 18748 [2020-10-27 04:20:43,242 INFO L226 Difference]: Without dead ends: 14715 [2020-10-27 04:20:43,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:20:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14715 states. [2020-10-27 04:20:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14715 to 12791. [2020-10-27 04:20:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12791 states. [2020-10-27 04:20:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 17472 transitions. [2020-10-27 04:20:44,437 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 17472 transitions. Word has length 93 [2020-10-27 04:20:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:44,438 INFO L481 AbstractCegarLoop]: Abstraction has 12791 states and 17472 transitions. [2020-10-27 04:20:44,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:20:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 17472 transitions. [2020-10-27 04:20:44,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:20:44,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:44,451 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] [2020-10-27 04:20:44,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:20:44,451 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:44,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:44,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1191373359, now seen corresponding path program 1 times [2020-10-27 04:20:44,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:44,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878956979] [2020-10-27 04:20:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:49,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:20:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:20:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 04:20:49,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:20:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:20:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:49,863 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:20:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:20:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:20:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:20:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:20:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:20:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:20:50,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:20:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:50,082 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 04:20:50,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878956979] [2020-10-27 04:20:50,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:50,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:50,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202335147] [2020-10-27 04:20:50,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:50,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:50,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:50,083 INFO L87 Difference]: Start difference. First operand 12791 states and 17472 transitions. Second operand 9 states. [2020-10-27 04:20:50,377 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:20:53,300 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:20:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:53,886 INFO L93 Difference]: Finished difference Result 28833 states and 39646 transitions. [2020-10-27 04:20:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:20:53,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 04:20:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:53,943 INFO L225 Difference]: With dead ends: 28833 [2020-10-27 04:20:53,943 INFO L226 Difference]: Without dead ends: 19233 [2020-10-27 04:20:53,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:20:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19233 states. [2020-10-27 04:20:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19233 to 18729. [2020-10-27 04:20:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18729 states. [2020-10-27 04:20:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18729 states to 18729 states and 25328 transitions. [2020-10-27 04:20:55,553 INFO L78 Accepts]: Start accepts. Automaton has 18729 states and 25328 transitions. Word has length 93 [2020-10-27 04:20:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:55,553 INFO L481 AbstractCegarLoop]: Abstraction has 18729 states and 25328 transitions. [2020-10-27 04:20:55,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18729 states and 25328 transitions. [2020-10-27 04:20:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:20:55,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:55,568 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] [2020-10-27 04:20:55,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:20:55,568 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash 741622896, now seen corresponding path program 1 times [2020-10-27 04:20:55,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:55,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273076471] [2020-10-27 04:20:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:21:00,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:21:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 04:21:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:21:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:21:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:21:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,990 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:21:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:21:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:21:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:21:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:01,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:21:01,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:21:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:21:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:21:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:21:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:21:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:21:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,323 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 04:21:01,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273076471] [2020-10-27 04:21:01,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:01,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:21:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203888363] [2020-10-27 04:21:01,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:21:01,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:21:01,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:21:01,325 INFO L87 Difference]: Start difference. First operand 18729 states and 25328 transitions. Second operand 14 states. [2020-10-27 04:21:01,674 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:21:01,970 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:21:02,586 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:21:03,097 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:21:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:06,898 INFO L93 Difference]: Finished difference Result 26050 states and 35393 transitions. [2020-10-27 04:21:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:21:06,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-27 04:21:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:06,960 INFO L225 Difference]: With dead ends: 26050 [2020-10-27 04:21:06,960 INFO L226 Difference]: Without dead ends: 21170 [2020-10-27 04:21:06,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:21:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21170 states. [2020-10-27 04:21:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21170 to 19976. [2020-10-27 04:21:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19976 states. [2020-10-27 04:21:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19976 states to 19976 states and 26933 transitions. [2020-10-27 04:21:08,673 INFO L78 Accepts]: Start accepts. Automaton has 19976 states and 26933 transitions. Word has length 97 [2020-10-27 04:21:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:08,674 INFO L481 AbstractCegarLoop]: Abstraction has 19976 states and 26933 transitions. [2020-10-27 04:21:08,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:21:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 19976 states and 26933 transitions. [2020-10-27 04:21:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:21:08,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:08,684 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] [2020-10-27 04:21:08,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:21:08,684 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash -76025554, now seen corresponding path program 1 times [2020-10-27 04:21:08,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:08,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105232262] [2020-10-27 04:21:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:13,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:21:13,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,006 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:21:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:21:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:21:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:21:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:21:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:21:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:21:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:21:14,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:21:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:21:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:21:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:14,336 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 04:21:14,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105232262] [2020-10-27 04:21:14,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:14,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:21:14,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468342009] [2020-10-27 04:21:14,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:21:14,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:21:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:21:14,338 INFO L87 Difference]: Start difference. First operand 19976 states and 26933 transitions. Second operand 13 states. [2020-10-27 04:21:14,676 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:21:15,305 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:21:15,593 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:21:18,129 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:21:18,424 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:21:18,709 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:21:19,522 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:21:19,826 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:21:27,625 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 04:21:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:29,859 INFO L93 Difference]: Finished difference Result 103523 states and 144715 transitions. [2020-10-27 04:21:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:21:29,864 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-27 04:21:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:30,215 INFO L225 Difference]: With dead ends: 103523 [2020-10-27 04:21:30,215 INFO L226 Difference]: Without dead ends: 88186 [2020-10-27 04:21:30,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:21:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88186 states.