/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-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:05:48,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:05:48,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:05:48,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:05:48,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:05:48,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:05:48,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:05:48,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:05:48,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:05:48,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:05:48,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:05:48,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:05:48,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:05:48,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:05:48,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:05:48,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:05:48,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:05:48,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:05:48,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:05:48,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:05:48,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:05:48,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:05:48,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:05:48,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:05:48,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:05:48,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:05:48,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:05:48,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:05:48,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:05:48,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:05:48,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:05:48,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:05:48,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:05:48,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:05:48,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:05:48,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:05:48,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:05:48,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:05:48,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:05:48,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:05:48,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:05:48,269 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 06:05:48,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:05:48,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:05:48,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:05:48,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:05:48,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:05:48,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:05:48,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:05:48,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:05:48,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:05:48,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:05:48,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:05:48,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:05:48,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:05:48,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:05:48,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:05:48,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:05:48,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:05:48,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:05:48,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:05:48,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:05:48,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:05:48,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:05:48,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:05:48,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:05:48,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:05:48,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:05:48,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:05:48,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:05:48,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:05:48,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:05:48,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:05:48,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:05:48,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:05:48,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:05:48,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:05:48,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:05:48,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9c06c37/72e6f09ee1804227a1af2a4bb3d7cd11/FLAGbed364d01 [2020-10-27 06:05:49,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:05:49,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:05:49,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9c06c37/72e6f09ee1804227a1af2a4bb3d7cd11/FLAGbed364d01 [2020-10-27 06:05:49,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9c06c37/72e6f09ee1804227a1af2a4bb3d7cd11 [2020-10-27 06:05:49,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:05:49,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:05:49,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:05:49,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:05:49,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:05:49,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:05:49" (1/1) ... [2020-10-27 06:05:49,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d03029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:49, skipping insertion in model container [2020-10-27 06:05:49,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:05:49" (1/1) ... [2020-10-27 06:05:49,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:05:50,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:05:51,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:05:51,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:05:52,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:05:52,550 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:05:52,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52 WrapperNode [2020-10-27 06:05:52,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:05:52,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:05:52,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:05:52,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:05:52,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (1/1) ... [2020-10-27 06:05:52,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:05:52,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:05:52,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:05:52,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:05:52,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (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 06:05:52,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:05:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:05:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:05:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:05:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:05:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:05:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:05:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:05:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:05:57,258 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:05:57,259 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:05:57,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:05:57 BoogieIcfgContainer [2020-10-27 06:05:57,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:05:57,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:05:57,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:05:57,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:05:57,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:05:49" (1/3) ... [2020-10-27 06:05:57,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890cbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:05:57, skipping insertion in model container [2020-10-27 06:05:57,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:05:52" (2/3) ... [2020-10-27 06:05:57,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890cbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:05:57, skipping insertion in model container [2020-10-27 06:05:57,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:05:57" (3/3) ... [2020-10-27 06:05:57,274 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:05:57,288 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:05:57,295 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:05:57,310 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:05:57,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:05:57,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:05:57,348 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:05:57,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:05:57,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:05:57,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:05:57,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:05:57,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:05:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states. [2020-10-27 06:05:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 06:05:57,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:57,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:57,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 244462510, now seen corresponding path program 1 times [2020-10-27 06:05:57,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:57,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330680708] [2020-10-27 06:05:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:03,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:03,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 06:06:03,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:06:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:06:03,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:03,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 06:06:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:06:04,975 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:05,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:05,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:05,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:05,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 06:06:05,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:06:05,429 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 06:06:05,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330680708] [2020-10-27 06:06:05,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:05,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:05,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859797014] [2020-10-27 06:06:05,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:05,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:05,467 INFO L87 Difference]: Start difference. First operand 977 states. Second operand 5 states. [2020-10-27 06:06:15,923 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:06:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:18,756 INFO L93 Difference]: Finished difference Result 2826 states and 5112 transitions. [2020-10-27 06:06:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:06:18,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 06:06:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:18,795 INFO L225 Difference]: With dead ends: 2826 [2020-10-27 06:06:18,796 INFO L226 Difference]: Without dead ends: 1868 [2020-10-27 06:06:18,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2020-10-27 06:06:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1787. [2020-10-27 06:06:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1787 states. [2020-10-27 06:06:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2749 transitions. [2020-10-27 06:06:19,035 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2749 transitions. Word has length 315 [2020-10-27 06:06:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:19,039 INFO L481 AbstractCegarLoop]: Abstraction has 1787 states and 2749 transitions. [2020-10-27 06:06:19,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2749 transitions. [2020-10-27 06:06:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 06:06:19,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:19,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:19,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:06:19,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:19,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:19,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1195287330, now seen corresponding path program 1 times [2020-10-27 06:06:19,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:19,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17003818] [2020-10-27 06:06:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 06:06:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:06:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 06:06:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 06:06:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:25,266 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:25,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:25,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:06:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:25,632 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 06:06:25,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17003818] [2020-10-27 06:06:25,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:25,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:25,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891474204] [2020-10-27 06:06:25,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:25,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:25,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:25,653 INFO L87 Difference]: Start difference. First operand 1787 states and 2749 transitions. Second operand 5 states. [2020-10-27 06:06:35,021 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:06:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:37,829 INFO L93 Difference]: Finished difference Result 5220 states and 8009 transitions. [2020-10-27 06:06:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:37,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 06:06:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:37,852 INFO L225 Difference]: With dead ends: 5220 [2020-10-27 06:06:37,852 INFO L226 Difference]: Without dead ends: 3483 [2020-10-27 06:06:37,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2020-10-27 06:06:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3393. [2020-10-27 06:06:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3393 states. [2020-10-27 06:06:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5191 transitions. [2020-10-27 06:06:38,024 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5191 transitions. Word has length 317 [2020-10-27 06:06:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:38,025 INFO L481 AbstractCegarLoop]: Abstraction has 3393 states and 5191 transitions. [2020-10-27 06:06:38,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5191 transitions. [2020-10-27 06:06:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 06:06:38,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:38,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:38,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:06:38,036 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:38,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2053645025, now seen corresponding path program 1 times [2020-10-27 06:06:38,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:38,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305979490] [2020-10-27 06:06:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 06:06:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:06:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 06:06:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 06:06:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:06:44,219 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:44,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:44,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:44,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:06:44,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:44,472 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 06:06:44,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305979490] [2020-10-27 06:06:44,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:44,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:44,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252721229] [2020-10-27 06:06:44,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:44,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:44,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:44,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:44,475 INFO L87 Difference]: Start difference. First operand 3393 states and 5191 transitions. Second operand 5 states. [2020-10-27 06:06:53,187 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:06:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:55,715 INFO L93 Difference]: Finished difference Result 10056 states and 15370 transitions. [2020-10-27 06:06:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:55,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 06:06:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:55,758 INFO L225 Difference]: With dead ends: 10056 [2020-10-27 06:06:55,759 INFO L226 Difference]: Without dead ends: 6682 [2020-10-27 06:06:55,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6682 states. [2020-10-27 06:06:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6682 to 6592. [2020-10-27 06:06:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6592 states. [2020-10-27 06:06:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 10032 transitions. [2020-10-27 06:06:56,082 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 10032 transitions. Word has length 319 [2020-10-27 06:06:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:56,090 INFO L481 AbstractCegarLoop]: Abstraction has 6592 states and 10032 transitions. [2020-10-27 06:06:56,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 10032 transitions. [2020-10-27 06:06:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 06:06:56,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:56,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:56,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:06:56,107 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -279397755, now seen corresponding path program 1 times [2020-10-27 06:06:56,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393469520] [2020-10-27 06:06:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:01,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:01,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 06:07:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:07:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 06:07:01,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 06:07:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:02,281 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:02,455 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 06:07:02,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393469520] [2020-10-27 06:07:02,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:02,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:02,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840364668] [2020-10-27 06:07:02,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:02,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:02,458 INFO L87 Difference]: Start difference. First operand 6592 states and 10032 transitions. Second operand 5 states. [2020-10-27 06:07:11,008 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:07:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:13,602 INFO L93 Difference]: Finished difference Result 19240 states and 29198 transitions. [2020-10-27 06:07:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:13,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 06:07:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:13,666 INFO L225 Difference]: With dead ends: 19240 [2020-10-27 06:07:13,666 INFO L226 Difference]: Without dead ends: 12822 [2020-10-27 06:07:13,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12822 states. [2020-10-27 06:07:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12822 to 12732. [2020-10-27 06:07:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12732 states. [2020-10-27 06:07:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 19218 transitions. [2020-10-27 06:07:14,276 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 19218 transitions. Word has length 321 [2020-10-27 06:07:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:14,276 INFO L481 AbstractCegarLoop]: Abstraction has 12732 states and 19218 transitions. [2020-10-27 06:07:14,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 19218 transitions. [2020-10-27 06:07:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 06:07:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:14,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:14,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:07:14,307 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1792814614, now seen corresponding path program 1 times [2020-10-27 06:07:14,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:14,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063108857] [2020-10-27 06:07:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 06:07:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:20,674 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:20,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:07:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:20,829 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 06:07:20,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063108857] [2020-10-27 06:07:20,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:20,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:20,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597793723] [2020-10-27 06:07:20,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:20,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:20,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:20,832 INFO L87 Difference]: Start difference. First operand 12732 states and 19218 transitions. Second operand 5 states. [2020-10-27 06:07:30,178 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:07:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:33,111 INFO L93 Difference]: Finished difference Result 37376 states and 56290 transitions. [2020-10-27 06:07:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:33,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 06:07:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:33,168 INFO L225 Difference]: With dead ends: 37376 [2020-10-27 06:07:33,168 INFO L226 Difference]: Without dead ends: 24938 [2020-10-27 06:07:33,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:33,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24938 states. [2020-10-27 06:07:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24938 to 24848. [2020-10-27 06:07:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24848 states. [2020-10-27 06:07:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 37186 transitions. [2020-10-27 06:07:34,429 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 37186 transitions. Word has length 323 [2020-10-27 06:07:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:34,429 INFO L481 AbstractCegarLoop]: Abstraction has 24848 states and 37186 transitions. [2020-10-27 06:07:34,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 37186 transitions. [2020-10-27 06:07:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:07:34,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:34,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:34,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:07:34,486 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:34,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1918119949, now seen corresponding path program 1 times [2020-10-27 06:07:34,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:34,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570322691] [2020-10-27 06:07:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 06:07:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:40,771 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:41,010 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 06:07:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570322691] [2020-10-27 06:07:41,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:41,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467591500] [2020-10-27 06:07:41,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:41,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:41,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:41,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:41,012 INFO L87 Difference]: Start difference. First operand 24848 states and 37186 transitions. Second operand 5 states. [2020-10-27 06:07:52,184 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:07:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:55,841 INFO L93 Difference]: Finished difference Result 73150 states and 109224 transitions. [2020-10-27 06:07:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:55,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:07:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:55,954 INFO L225 Difference]: With dead ends: 73150 [2020-10-27 06:07:55,954 INFO L226 Difference]: Without dead ends: 48996 [2020-10-27 06:07:56,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48996 states. [2020-10-27 06:07:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48996 to 48912. [2020-10-27 06:07:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48912 states. [2020-10-27 06:07:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48912 states to 48912 states and 72666 transitions. [2020-10-27 06:07:58,442 INFO L78 Accepts]: Start accepts. Automaton has 48912 states and 72666 transitions. Word has length 325 [2020-10-27 06:07:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:58,443 INFO L481 AbstractCegarLoop]: Abstraction has 48912 states and 72666 transitions. [2020-10-27 06:07:58,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 48912 states and 72666 transitions. [2020-10-27 06:07:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:07:58,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:58,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:58,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:07:58,521 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1893531376, now seen corresponding path program 1 times [2020-10-27 06:07:58,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:58,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695132168] [2020-10-27 06:07:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:08:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:04,695 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:04,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:04,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:04,895 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 06:08:04,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695132168] [2020-10-27 06:08:04,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:04,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:04,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899107804] [2020-10-27 06:08:04,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:04,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:04,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:04,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:04,898 INFO L87 Difference]: Start difference. First operand 48912 states and 72666 transitions. Second operand 5 states. [2020-10-27 06:08:17,929 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:08:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:22,160 INFO L93 Difference]: Finished difference Result 141782 states and 209666 transitions. [2020-10-27 06:08:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:22,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:08:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:22,300 INFO L225 Difference]: With dead ends: 141782 [2020-10-27 06:08:22,300 INFO L226 Difference]: Without dead ends: 95624 [2020-10-27 06:08:22,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95624 states. [2020-10-27 06:08:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95624 to 95576. [2020-10-27 06:08:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95576 states. [2020-10-27 06:08:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95576 states to 95576 states and 140709 transitions. [2020-10-27 06:08:28,002 INFO L78 Accepts]: Start accepts. Automaton has 95576 states and 140709 transitions. Word has length 327 [2020-10-27 06:08:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:28,003 INFO L481 AbstractCegarLoop]: Abstraction has 95576 states and 140709 transitions. [2020-10-27 06:08:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 95576 states and 140709 transitions. [2020-10-27 06:08:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:08:28,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:28,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:28,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:08:28,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2138038663, now seen corresponding path program 1 times [2020-10-27 06:08:28,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:28,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988810146] [2020-10-27 06:08:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 06:08:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:34,398 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:08:34,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:34,567 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 06:08:34,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988810146] [2020-10-27 06:08:34,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:34,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:34,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642149984] [2020-10-27 06:08:34,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:34,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:34,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:34,570 INFO L87 Difference]: Start difference. First operand 95576 states and 140709 transitions. Second operand 5 states. [2020-10-27 06:08:50,638 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:08:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:55,808 INFO L93 Difference]: Finished difference Result 282136 states and 414467 transitions. [2020-10-27 06:08:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:55,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:08:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:56,106 INFO L225 Difference]: With dead ends: 282136 [2020-10-27 06:08:56,106 INFO L226 Difference]: Without dead ends: 187088 [2020-10-27 06:08:56,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187088 states. [2020-10-27 06:09:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187088 to 187028. [2020-10-27 06:09:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187028 states. [2020-10-27 06:09:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187028 states to 187028 states and 272627 transitions. [2020-10-27 06:09:07,103 INFO L78 Accepts]: Start accepts. Automaton has 187028 states and 272627 transitions. Word has length 329 [2020-10-27 06:09:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:07,104 INFO L481 AbstractCegarLoop]: Abstraction has 187028 states and 272627 transitions. [2020-10-27 06:09:07,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 187028 states and 272627 transitions. [2020-10-27 06:09:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:09:07,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:07,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:07,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:09:07,559 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1057310581, now seen corresponding path program 1 times [2020-10-27 06:09:07,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:07,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471472564] [2020-10-27 06:09:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:07,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:12,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 06:09:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:13,705 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:09:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:13,962 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 06:09:13,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471472564] [2020-10-27 06:09:13,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:13,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:13,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302619896] [2020-10-27 06:09:13,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:13,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:13,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:13,965 INFO L87 Difference]: Start difference. First operand 187028 states and 272627 transitions. Second operand 5 states.