/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.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:57:26,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:57:26,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:57:26,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:57:26,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:57:26,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:57:26,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:57:26,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:57:26,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:57:26,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:57:26,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:57:26,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:57:26,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:57:26,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:57:26,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:57:26,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:57:26,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:57:26,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:57:26,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:57:26,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:57:26,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:57:26,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:57:26,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:57:26,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:57:26,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:57:26,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:57:26,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:57:26,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:57:26,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:57:26,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:57:26,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:57:26,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:57:26,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:57:26,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:57:26,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:57:26,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:57:26,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:57:26,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:57:26,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:57:26,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:57:26,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:57:26,962 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 05:57:27,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:57:27,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:57:27,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:57:27,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:57:27,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:57:27,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:57:27,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:57:27,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:57:27,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:57:27,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:57:27,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:57:27,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:57:27,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:57:27,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:57:27,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:57:27,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:57:27,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:57:27,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:57:27,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:57:27,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:57:27,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:57:27,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:57:27,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:57:27,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:57:27,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:57:27,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:57:27,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:57:27,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:57:27,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:57:27,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:57:27,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:57:27,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:57:27,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:57:27,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:57:27,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:57:27,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:57:27,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca488ba5/23d63f408434407b9719f9e576f18902/FLAG2f53c82f7 [2020-10-27 05:57:28,279 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:57:28,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:57:28,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca488ba5/23d63f408434407b9719f9e576f18902/FLAG2f53c82f7 [2020-10-27 05:57:28,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca488ba5/23d63f408434407b9719f9e576f18902 [2020-10-27 05:57:28,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:57:28,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:57:28,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:57:28,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:57:28,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:57:28,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:28" (1/1) ... [2020-10-27 05:57:28,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10873ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:28, skipping insertion in model container [2020-10-27 05:57:28,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:28" (1/1) ... [2020-10-27 05:57:28,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:57:28,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:57:29,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:57:29,076 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:57:29,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:57:29,289 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:57:29,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29 WrapperNode [2020-10-27 05:57:29,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:57:29,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:57:29,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:57:29,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:57:29,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (1/1) ... [2020-10-27 05:57:29,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:57:29,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:57:29,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:57:29,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:57:29,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (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 05:57:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:57:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:57:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:57:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:57:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:57:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:57:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:57:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:57:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:57:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:57:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:57:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:57:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:57:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:57:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:57:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:57:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:57:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:57:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:57:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:57:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:57:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:57:31,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:57:31,159 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:57:31,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:31 BoogieIcfgContainer [2020-10-27 05:57:31,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:57:31,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:57:31,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:57:31,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:57:31,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:57:28" (1/3) ... [2020-10-27 05:57:31,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3b58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:31, skipping insertion in model container [2020-10-27 05:57:31,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:29" (2/3) ... [2020-10-27 05:57:31,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3b58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:31, skipping insertion in model container [2020-10-27 05:57:31,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:31" (3/3) ... [2020-10-27 05:57:31,171 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:57:31,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:57:31,189 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:57:31,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:57:31,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:57:31,233 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:57:31,233 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:57:31,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:57:31,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:57:31,234 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:57:31,234 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:57:31,234 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:57:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-10-27 05:57:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 05:57:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:31,286 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] [2020-10-27 05:57:31,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash -477280769, now seen corresponding path program 1 times [2020-10-27 05:57:31,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:31,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521387255] [2020-10-27 05:57:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:36,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:36,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 05:57:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:57:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:57:36,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:57:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:57:37,391 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:57:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:57:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:37,530 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 05:57:37,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521387255] [2020-10-27 05:57:37,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:37,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:37,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327145724] [2020-10-27 05:57:37,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:37,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:37,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:37,568 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 5 states. [2020-10-27 05:57:40,342 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:41,372 INFO L93 Difference]: Finished difference Result 998 states and 1750 transitions. [2020-10-27 05:57:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:57:41,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 05:57:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:41,394 INFO L225 Difference]: With dead ends: 998 [2020-10-27 05:57:41,395 INFO L226 Difference]: Without dead ends: 662 [2020-10-27 05:57:41,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-27 05:57:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 659. [2020-10-27 05:57:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-27 05:57:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 958 transitions. [2020-10-27 05:57:41,541 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 958 transitions. Word has length 160 [2020-10-27 05:57:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:41,542 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 958 transitions. [2020-10-27 05:57:41,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 958 transitions. [2020-10-27 05:57:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 05:57:41,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:41,554 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] [2020-10-27 05:57:41,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:57:41,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash -363485383, now seen corresponding path program 1 times [2020-10-27 05:57:41,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:41,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341987622] [2020-10-27 05:57:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 05:57:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:57:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:57:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 05:57:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:47,187 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:57:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:47,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:57:47,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:57:47,308 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 05:57:47,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341987622] [2020-10-27 05:57:47,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:47,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033489432] [2020-10-27 05:57:47,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:47,315 INFO L87 Difference]: Start difference. First operand 659 states and 958 transitions. Second operand 5 states. [2020-10-27 05:57:49,377 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:50,408 INFO L93 Difference]: Finished difference Result 1875 states and 2707 transitions. [2020-10-27 05:57:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:57:50,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 05:57:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:50,417 INFO L225 Difference]: With dead ends: 1875 [2020-10-27 05:57:50,417 INFO L226 Difference]: Without dead ends: 1253 [2020-10-27 05:57:50,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-27 05:57:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1250. [2020-10-27 05:57:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-27 05:57:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1792 transitions. [2020-10-27 05:57:50,523 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1792 transitions. Word has length 161 [2020-10-27 05:57:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:50,526 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1792 transitions. [2020-10-27 05:57:50,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1792 transitions. [2020-10-27 05:57:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 05:57:50,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:50,536 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] [2020-10-27 05:57:50,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:57:50,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash -558866720, now seen corresponding path program 1 times [2020-10-27 05:57:50,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:50,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332739783] [2020-10-27 05:57:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:55,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 05:57:55,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:57:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:57:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:57:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:56,043 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:57:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:56,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:56,143 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 05:57:56,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332739783] [2020-10-27 05:57:56,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:56,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:56,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141732724] [2020-10-27 05:57:56,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:56,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:56,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:56,146 INFO L87 Difference]: Start difference. First operand 1250 states and 1792 transitions. Second operand 5 states. [2020-10-27 05:57:58,289 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:59,330 INFO L93 Difference]: Finished difference Result 3610 states and 5146 transitions. [2020-10-27 05:57:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:57:59,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 05:57:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:59,348 INFO L225 Difference]: With dead ends: 3610 [2020-10-27 05:57:59,349 INFO L226 Difference]: Without dead ends: 2389 [2020-10-27 05:57:59,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-10-27 05:57:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2386. [2020-10-27 05:57:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-10-27 05:57:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3368 transitions. [2020-10-27 05:57:59,501 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3368 transitions. Word has length 162 [2020-10-27 05:57:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:59,505 INFO L481 AbstractCegarLoop]: Abstraction has 2386 states and 3368 transitions. [2020-10-27 05:57:59,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3368 transitions. [2020-10-27 05:57:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 05:57:59,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:59,512 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] [2020-10-27 05:57:59,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:57:59,512 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1500433112, now seen corresponding path program 1 times [2020-10-27 05:57:59,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:59,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626862375] [2020-10-27 05:57:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:04,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 05:58:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:58:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:58:04,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:58:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:58:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:05,121 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:05,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:58:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:58:05,257 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 05:58:05,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626862375] [2020-10-27 05:58:05,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:05,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:05,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634625251] [2020-10-27 05:58:05,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:05,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:05,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:05,261 INFO L87 Difference]: Start difference. First operand 2386 states and 3368 transitions. Second operand 5 states. [2020-10-27 05:58:07,511 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:08,572 INFO L93 Difference]: Finished difference Result 6951 states and 9775 transitions. [2020-10-27 05:58:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:58:08,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-27 05:58:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:08,596 INFO L225 Difference]: With dead ends: 6951 [2020-10-27 05:58:08,596 INFO L226 Difference]: Without dead ends: 4578 [2020-10-27 05:58:08,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2020-10-27 05:58:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 4575. [2020-10-27 05:58:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-10-27 05:58:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 6371 transitions. [2020-10-27 05:58:08,824 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 6371 transitions. Word has length 163 [2020-10-27 05:58:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:08,824 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 6371 transitions. [2020-10-27 05:58:08,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 6371 transitions. [2020-10-27 05:58:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:58:08,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:08,835 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] [2020-10-27 05:58:08,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:58:08,835 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:08,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1902558366, now seen corresponding path program 1 times [2020-10-27 05:58:08,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:08,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189675295] [2020-10-27 05:58:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:13,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:58:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:58:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:58:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:58:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:58:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:14,385 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:14,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:14,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:14,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:14,467 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 05:58:14,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189675295] [2020-10-27 05:58:14,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:14,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:14,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860166300] [2020-10-27 05:58:14,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:14,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:14,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:14,470 INFO L87 Difference]: Start difference. First operand 4575 states and 6371 transitions. Second operand 5 states. [2020-10-27 05:58:17,073 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:18,308 INFO L93 Difference]: Finished difference Result 12640 states and 17646 transitions. [2020-10-27 05:58:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:58:18,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-27 05:58:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:18,347 INFO L225 Difference]: With dead ends: 12640 [2020-10-27 05:58:18,347 INFO L226 Difference]: Without dead ends: 8811 [2020-10-27 05:58:18,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8811 states. [2020-10-27 05:58:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8811 to 8808. [2020-10-27 05:58:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8808 states. [2020-10-27 05:58:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8808 states to 8808 states and 12092 transitions. [2020-10-27 05:58:18,833 INFO L78 Accepts]: Start accepts. Automaton has 8808 states and 12092 transitions. Word has length 164 [2020-10-27 05:58:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:18,833 INFO L481 AbstractCegarLoop]: Abstraction has 8808 states and 12092 transitions. [2020-10-27 05:58:18,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8808 states and 12092 transitions. [2020-10-27 05:58:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 05:58:18,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:18,849 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] [2020-10-27 05:58:18,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:58:18,850 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:18,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash -285947017, now seen corresponding path program 1 times [2020-10-27 05:58:18,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:18,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657416247] [2020-10-27 05:58:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 05:58:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 05:58:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:24,247 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:24,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:24,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:24,300 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 05:58:24,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657416247] [2020-10-27 05:58:24,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:24,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:58:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253733552] [2020-10-27 05:58:24,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:58:24,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:58:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:58:24,302 INFO L87 Difference]: Start difference. First operand 8808 states and 12092 transitions. Second operand 4 states. [2020-10-27 05:58:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:26,760 INFO L93 Difference]: Finished difference Result 25759 states and 35503 transitions. [2020-10-27 05:58:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 05:58:26,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-27 05:58:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:26,826 INFO L225 Difference]: With dead ends: 25759 [2020-10-27 05:58:26,826 INFO L226 Difference]: Without dead ends: 17558 [2020-10-27 05:58:26,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:58:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17558 states. [2020-10-27 05:58:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17558 to 8811. [2020-10-27 05:58:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8811 states. [2020-10-27 05:58:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8811 states to 8811 states and 12096 transitions. [2020-10-27 05:58:27,446 INFO L78 Accepts]: Start accepts. Automaton has 8811 states and 12096 transitions. Word has length 165 [2020-10-27 05:58:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:27,447 INFO L481 AbstractCegarLoop]: Abstraction has 8811 states and 12096 transitions. [2020-10-27 05:58:27,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:58:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8811 states and 12096 transitions. [2020-10-27 05:58:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:58:27,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:27,463 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] [2020-10-27 05:58:27,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:58:27,463 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1928933997, now seen corresponding path program 1 times [2020-10-27 05:58:27,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:27,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746049211] [2020-10-27 05:58:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:58:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:58:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:32,982 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:32,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:32,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:32,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:58:32,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:58:33,053 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 05:58:33,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746049211] [2020-10-27 05:58:33,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:33,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:33,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898296671] [2020-10-27 05:58:33,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:33,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:33,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:33,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:33,057 INFO L87 Difference]: Start difference. First operand 8811 states and 12096 transitions. Second operand 5 states. [2020-10-27 05:58:35,782 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:37,156 INFO L93 Difference]: Finished difference Result 24635 states and 33905 transitions. [2020-10-27 05:58:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:58:37,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 05:58:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:37,193 INFO L225 Difference]: With dead ends: 24635 [2020-10-27 05:58:37,194 INFO L226 Difference]: Without dead ends: 16984 [2020-10-27 05:58:37,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16984 states. [2020-10-27 05:58:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16984 to 16981. [2020-10-27 05:58:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16981 states. [2020-10-27 05:58:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16981 states to 16981 states and 22949 transitions. [2020-10-27 05:58:38,281 INFO L78 Accepts]: Start accepts. Automaton has 16981 states and 22949 transitions. Word has length 166 [2020-10-27 05:58:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 16981 states and 22949 transitions. [2020-10-27 05:58:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 16981 states and 22949 transitions. [2020-10-27 05:58:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:58:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:38,320 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] [2020-10-27 05:58:38,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:58:38,320 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash 302092706, now seen corresponding path program 1 times [2020-10-27 05:58:38,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:38,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176119732] [2020-10-27 05:58:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 05:58:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:43,797 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:43,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:43,861 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 05:58:43,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176119732] [2020-10-27 05:58:43,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:43,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:43,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729844737] [2020-10-27 05:58:43,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:43,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:43,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:43,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:43,864 INFO L87 Difference]: Start difference. First operand 16981 states and 22949 transitions. Second operand 5 states. [2020-10-27 05:58:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:46,173 INFO L93 Difference]: Finished difference Result 27529 states and 37295 transitions. [2020-10-27 05:58:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:58:46,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 05:58:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:46,196 INFO L225 Difference]: With dead ends: 27529 [2020-10-27 05:58:46,196 INFO L226 Difference]: Without dead ends: 10970 [2020-10-27 05:58:46,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:58:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10970 states. [2020-10-27 05:58:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10970 to 10970. [2020-10-27 05:58:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10970 states. [2020-10-27 05:58:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 14805 transitions. [2020-10-27 05:58:46,866 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 14805 transitions. Word has length 166 [2020-10-27 05:58:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:46,866 INFO L481 AbstractCegarLoop]: Abstraction has 10970 states and 14805 transitions. [2020-10-27 05:58:46,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 14805 transitions. [2020-10-27 05:58:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:58:46,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:46,882 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] [2020-10-27 05:58:46,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:58:46,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:46,883 INFO L82 PathProgramCache]: Analyzing trace with hash -476868007, now seen corresponding path program 1 times [2020-10-27 05:58:46,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:46,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943269360] [2020-10-27 05:58:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:58:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:58:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 05:58:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:52,371 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:58:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:58:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:52,441 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 05:58:52,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943269360] [2020-10-27 05:58:52,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:52,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:58:52,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358306486] [2020-10-27 05:58:52,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:58:52,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:58:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:58:52,443 INFO L87 Difference]: Start difference. First operand 10970 states and 14805 transitions. Second operand 9 states. [2020-10-27 05:58:52,863 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:55,497 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:58:55,915 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:58:57,500 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:58:57,924 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:58:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:58,702 INFO L93 Difference]: Finished difference Result 37786 states and 53533 transitions. [2020-10-27 05:58:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:58:58,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-10-27 05:58:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:58,753 INFO L225 Difference]: With dead ends: 37786 [2020-10-27 05:58:58,753 INFO L226 Difference]: Without dead ends: 29683 [2020-10-27 05:58:58,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:58:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2020-10-27 05:59:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 17178. [2020-10-27 05:59:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2020-10-27 05:59:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 23357 transitions. [2020-10-27 05:59:00,244 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 23357 transitions. Word has length 170 [2020-10-27 05:59:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:00,244 INFO L481 AbstractCegarLoop]: Abstraction has 17178 states and 23357 transitions. [2020-10-27 05:59:00,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:59:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 23357 transitions. [2020-10-27 05:59:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:59:00,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:00,264 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] [2020-10-27 05:59:00,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:59:00,265 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1424842929, now seen corresponding path program 1 times [2020-10-27 05:59:00,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:00,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298548960] [2020-10-27 05:59:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:59:05,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 05:59:05,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:05,720 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:59:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:05,768 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 05:59:05,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298548960] [2020-10-27 05:59:05,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:05,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:05,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947466978] [2020-10-27 05:59:05,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:05,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:05,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:05,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:05,770 INFO L87 Difference]: Start difference. First operand 17178 states and 23357 transitions. Second operand 5 states. [2020-10-27 05:59:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:08,181 INFO L93 Difference]: Finished difference Result 28147 states and 38426 transitions. [2020-10-27 05:59:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:59:08,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 05:59:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:08,204 INFO L225 Difference]: With dead ends: 28147 [2020-10-27 05:59:08,204 INFO L226 Difference]: Without dead ends: 13750 [2020-10-27 05:59:08,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:59:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13750 states. [2020-10-27 05:59:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13750 to 13750. [2020-10-27 05:59:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13750 states. [2020-10-27 05:59:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 18654 transitions. [2020-10-27 05:59:09,277 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 18654 transitions. Word has length 170 [2020-10-27 05:59:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:09,277 INFO L481 AbstractCegarLoop]: Abstraction has 13750 states and 18654 transitions. [2020-10-27 05:59:09,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 18654 transitions. [2020-10-27 05:59:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 05:59:09,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:09,294 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] [2020-10-27 05:59:09,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:59:09,294 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:09,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2097241933, now seen corresponding path program 1 times [2020-10-27 05:59:09,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:09,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705294445] [2020-10-27 05:59:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:14,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 05:59:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:14,738 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:59:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:14,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:14,784 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 05:59:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705294445] [2020-10-27 05:59:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:14,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839863277] [2020-10-27 05:59:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:14,786 INFO L87 Difference]: Start difference. First operand 13750 states and 18654 transitions. Second operand 5 states. [2020-10-27 05:59:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:16,877 INFO L93 Difference]: Finished difference Result 22655 states and 30776 transitions. [2020-10-27 05:59:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:59:16,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-27 05:59:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:16,890 INFO L225 Difference]: With dead ends: 22655 [2020-10-27 05:59:16,890 INFO L226 Difference]: Without dead ends: 9355 [2020-10-27 05:59:16,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:59:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9355 states. [2020-10-27 05:59:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9355 to 9355. [2020-10-27 05:59:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9355 states. [2020-10-27 05:59:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 12638 transitions. [2020-10-27 05:59:17,681 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 12638 transitions. Word has length 172 [2020-10-27 05:59:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:17,681 INFO L481 AbstractCegarLoop]: Abstraction has 9355 states and 12638 transitions. [2020-10-27 05:59:17,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 12638 transitions. [2020-10-27 05:59:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 05:59:17,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:17,691 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] [2020-10-27 05:59:17,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:59:17,691 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:17,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1515571989, now seen corresponding path program 1 times [2020-10-27 05:59:17,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:17,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199976038] [2020-10-27 05:59:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:22,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:22,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 05:59:22,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:59:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:59:22,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:59:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:59:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:23,157 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:59:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:23,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:23,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:23,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:59:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:23,228 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 05:59:23,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199976038] [2020-10-27 05:59:23,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:23,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:23,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812945588] [2020-10-27 05:59:23,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:23,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:23,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:23,230 INFO L87 Difference]: Start difference. First operand 9355 states and 12638 transitions. Second operand 5 states. [2020-10-27 05:59:23,635 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:59:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:27,279 INFO L93 Difference]: Finished difference Result 15106 states and 20484 transitions. [2020-10-27 05:59:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:59:27,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-27 05:59:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:27,292 INFO L225 Difference]: With dead ends: 15106 [2020-10-27 05:59:27,292 INFO L226 Difference]: Without dead ends: 9358 [2020-10-27 05:59:27,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:59:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9358 states. [2020-10-27 05:59:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9358 to 9355. [2020-10-27 05:59:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9355 states. [2020-10-27 05:59:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 12582 transitions. [2020-10-27 05:59:28,033 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 12582 transitions. Word has length 175 [2020-10-27 05:59:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:28,033 INFO L481 AbstractCegarLoop]: Abstraction has 9355 states and 12582 transitions. [2020-10-27 05:59:28,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 12582 transitions. [2020-10-27 05:59:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 05:59:28,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:28,038 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] [2020-10-27 05:59:28,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:59:28,039 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash -40854366, now seen corresponding path program 1 times [2020-10-27 05:59:28,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:28,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390553607] [2020-10-27 05:59:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 05:59:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:33,526 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:59:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:33,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:59:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:33,707 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 05:59:33,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390553607] [2020-10-27 05:59:33,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:33,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:59:33,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011410340] [2020-10-27 05:59:33,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:59:33,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:33,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:59:33,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:59:33,711 INFO L87 Difference]: Start difference. First operand 9355 states and 12582 transitions. Second operand 9 states. [2020-10-27 05:59:34,138 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:36,565 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:59:36,978 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:59:38,598 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:59:39,007 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:59:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:39,867 INFO L93 Difference]: Finished difference Result 31418 states and 43569 transitions. [2020-10-27 05:59:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:59:39,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-10-27 05:59:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:39,899 INFO L225 Difference]: With dead ends: 31418 [2020-10-27 05:59:39,899 INFO L226 Difference]: Without dead ends: 23998 [2020-10-27 05:59:39,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:59:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23998 states. [2020-10-27 05:59:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23998 to 14416. [2020-10-27 05:59:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14416 states. [2020-10-27 05:59:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14416 states to 14416 states and 19275 transitions. [2020-10-27 05:59:41,171 INFO L78 Accepts]: Start accepts. Automaton has 14416 states and 19275 transitions. Word has length 176 [2020-10-27 05:59:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:41,171 INFO L481 AbstractCegarLoop]: Abstraction has 14416 states and 19275 transitions. [2020-10-27 05:59:41,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:59:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 14416 states and 19275 transitions. [2020-10-27 05:59:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 05:59:41,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:41,178 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] [2020-10-27 05:59:41,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:59:41,179 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:41,179 INFO L82 PathProgramCache]: Analyzing trace with hash 284943394, now seen corresponding path program 1 times [2020-10-27 05:59:41,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:41,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381383717] [2020-10-27 05:59:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 05:59:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:46,663 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:59:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:59:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:46,766 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 05:59:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381383717] [2020-10-27 05:59:46,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:59:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371071260] [2020-10-27 05:59:46,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:59:46,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:59:46,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:59:46,768 INFO L87 Difference]: Start difference. First operand 14416 states and 19275 transitions. Second operand 9 states. [2020-10-27 05:59:47,199 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:49,979 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:59:50,408 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:59:52,148 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:59:52,634 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:59:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:54,981 INFO L93 Difference]: Finished difference Result 52555 states and 72214 transitions. [2020-10-27 05:59:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:59:54,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-10-27 05:59:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:55,027 INFO L225 Difference]: With dead ends: 52555 [2020-10-27 05:59:55,027 INFO L226 Difference]: Without dead ends: 39526 [2020-10-27 05:59:55,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:59:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39526 states. [2020-10-27 05:59:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39526 to 19503. [2020-10-27 05:59:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19503 states. [2020-10-27 05:59:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19503 states to 19503 states and 25797 transitions. [2020-10-27 05:59:57,172 INFO L78 Accepts]: Start accepts. Automaton has 19503 states and 25797 transitions. Word has length 176 [2020-10-27 05:59:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:57,173 INFO L481 AbstractCegarLoop]: Abstraction has 19503 states and 25797 transitions. [2020-10-27 05:59:57,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:59:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 19503 states and 25797 transitions. [2020-10-27 05:59:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 05:59:57,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:57,181 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] [2020-10-27 05:59:57,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:59:57,181 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2069805221, now seen corresponding path program 1 times [2020-10-27 05:59:57,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:57,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170470585] [2020-10-27 05:59:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:00:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:02,614 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 06:00:02,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:02,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:02,656 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 06:00:02,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170470585] [2020-10-27 06:00:02,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:02,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:02,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361106378] [2020-10-27 06:00:02,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:02,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:02,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:02,658 INFO L87 Difference]: Start difference. First operand 19503 states and 25797 transitions. Second operand 5 states. [2020-10-27 06:00:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:05,795 INFO L93 Difference]: Finished difference Result 29488 states and 39077 transitions. [2020-10-27 06:00:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:00:05,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-27 06:00:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:05,812 INFO L225 Difference]: With dead ends: 29488 [2020-10-27 06:00:05,812 INFO L226 Difference]: Without dead ends: 16493 [2020-10-27 06:00:05,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:00:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16493 states. [2020-10-27 06:00:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16493 to 16493. [2020-10-27 06:00:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16493 states. [2020-10-27 06:00:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16493 states to 16493 states and 21746 transitions. [2020-10-27 06:00:07,390 INFO L78 Accepts]: Start accepts. Automaton has 16493 states and 21746 transitions. Word has length 176 [2020-10-27 06:00:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:07,391 INFO L481 AbstractCegarLoop]: Abstraction has 16493 states and 21746 transitions. [2020-10-27 06:00:07,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 16493 states and 21746 transitions. [2020-10-27 06:00:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 06:00:07,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:07,399 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] [2020-10-27 06:00:07,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:00:07,400 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:07,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1935614116, now seen corresponding path program 1 times [2020-10-27 06:00:07,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:07,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088199259] [2020-10-27 06:00:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 06:00:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:12,871 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 06:00:12,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:12,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:00:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:00:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:12,937 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 06:00:12,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088199259] [2020-10-27 06:00:12,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:12,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:00:12,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569844821] [2020-10-27 06:00:12,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:00:12,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:12,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:00:12,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:00:12,939 INFO L87 Difference]: Start difference. First operand 16493 states and 21746 transitions. Second operand 9 states. [2020-10-27 06:00:13,371 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 06:00:16,413 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 06:00:16,832 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 06:00:18,670 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 06:00:19,194 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 06:00:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:21,688 INFO L93 Difference]: Finished difference Result 50403 states and 68210 transitions. [2020-10-27 06:00:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:00:21,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-27 06:00:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:21,732 INFO L225 Difference]: With dead ends: 50403 [2020-10-27 06:00:21,732 INFO L226 Difference]: Without dead ends: 41200 [2020-10-27 06:00:21,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 06:00:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41200 states. [2020-10-27 06:00:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41200 to 20873. [2020-10-27 06:00:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20873 states. [2020-10-27 06:00:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20873 states to 20873 states and 27455 transitions. [2020-10-27 06:00:23,841 INFO L78 Accepts]: Start accepts. Automaton has 20873 states and 27455 transitions. Word has length 178 [2020-10-27 06:00:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:23,841 INFO L481 AbstractCegarLoop]: Abstraction has 20873 states and 27455 transitions. [2020-10-27 06:00:23,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:00:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20873 states and 27455 transitions. [2020-10-27 06:00:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 06:00:23,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:23,854 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] [2020-10-27 06:00:23,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:00:23,854 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:23,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1300891862, now seen corresponding path program 1 times [2020-10-27 06:00:23,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:23,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38603796] [2020-10-27 06:00:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 06:00:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 06:00:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:29,274 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 06:00:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:29,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:29,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38603796] [2020-10-27 06:00:29,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:29,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:00:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988775444] [2020-10-27 06:00:29,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:00:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:00:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:00:29,324 INFO L87 Difference]: Start difference. First operand 20873 states and 27455 transitions. Second operand 4 states. [2020-10-27 06:00:29,713 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 06:00:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:34,993 INFO L93 Difference]: Finished difference Result 45662 states and 62980 transitions. [2020-10-27 06:00:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:00:34,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-27 06:00:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:35,030 INFO L225 Difference]: With dead ends: 45662 [2020-10-27 06:00:35,030 INFO L226 Difference]: Without dead ends: 36114 [2020-10-27 06:00:35,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36114 states. [2020-10-27 06:00:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36114 to 36111. [2020-10-27 06:00:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36111 states. [2020-10-27 06:00:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36111 states to 36111 states and 48436 transitions. [2020-10-27 06:00:39,068 INFO L78 Accepts]: Start accepts. Automaton has 36111 states and 48436 transitions. Word has length 178 [2020-10-27 06:00:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:39,068 INFO L481 AbstractCegarLoop]: Abstraction has 36111 states and 48436 transitions. [2020-10-27 06:00:39,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:00:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36111 states and 48436 transitions. [2020-10-27 06:00:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 06:00:39,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:39,089 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] [2020-10-27 06:00:39,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:00:39,090 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -630934289, now seen corresponding path program 1 times [2020-10-27 06:00:39,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:39,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263712016] [2020-10-27 06:00:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:44,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:44,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 06:00:44,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:00:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:00:44,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 06:00:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 06:00:44,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:44,520 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 06:00:44,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:44,569 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 06:00:44,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263712016] [2020-10-27 06:00:44,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:44,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:00:44,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591112345] [2020-10-27 06:00:44,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:00:44,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:44,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:00:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:00:44,571 INFO L87 Difference]: Start difference. First operand 36111 states and 48436 transitions. Second operand 4 states. [2020-10-27 06:00:44,961 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 06:00:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:53,045 INFO L93 Difference]: Finished difference Result 84705 states and 118113 transitions. [2020-10-27 06:00:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:00:53,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-27 06:00:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:53,131 INFO L225 Difference]: With dead ends: 84705 [2020-10-27 06:00:53,132 INFO L226 Difference]: Without dead ends: 66124 [2020-10-27 06:00:53,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66124 states. [2020-10-27 06:01:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66124 to 66121. [2020-10-27 06:01:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66121 states. [2020-10-27 06:01:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66121 states to 66121 states and 89683 transitions. [2020-10-27 06:01:00,888 INFO L78 Accepts]: Start accepts. Automaton has 66121 states and 89683 transitions. Word has length 178 [2020-10-27 06:01:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:00,888 INFO L481 AbstractCegarLoop]: Abstraction has 66121 states and 89683 transitions. [2020-10-27 06:01:00,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:01:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 66121 states and 89683 transitions. [2020-10-27 06:01:00,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 06:01:00,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:00,917 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] [2020-10-27 06:01:00,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 06:01:00,917 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1207547212, now seen corresponding path program 1 times [2020-10-27 06:01:00,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:00,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826213234] [2020-10-27 06:01:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking...