/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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:57:07,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:57:07,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:57:07,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:57:07,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:57:07,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:57:07,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:57:07,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:57:07,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:57:07,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:57:07,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:57:07,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:57:07,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:57:07,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:57:07,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:57:07,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:57:07,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:57:07,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:57:07,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:57:07,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:57:07,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:57:07,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:57:07,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:57:07,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:57:07,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:57:07,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:57:07,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:57:07,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:57:07,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:57:07,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:57:07,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:57:07,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:57:07,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:57:07,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:57:07,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:57:07,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:57:07,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:57:07,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:57:07,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:57:07,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:57:07,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:57:07,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:57:07,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:57:07,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:57:07,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:57:07,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:57:07,489 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:57:07,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:57:07,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:57:07,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:57:07,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:57:07,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:57:07,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:57:07,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:57:07,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:57:07,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:57:07,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:57:07,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:57:07,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:57:07,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:57:07,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:57:07,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:57:07,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:57:07,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:57:07,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:57:07,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:57:07,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:57:07,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:57:07,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:57:07,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:57:07,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:57:07,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:57:07,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:57:07,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:57:07,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:57:07,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:57:07,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:57:07,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:57:07,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604cb873f/8621e27e6b204f49821de85a3dad6aba/FLAG6b8a85bfe [2020-10-27 04:57:08,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:57:08,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:57:08,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604cb873f/8621e27e6b204f49821de85a3dad6aba/FLAG6b8a85bfe [2020-10-27 04:57:09,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604cb873f/8621e27e6b204f49821de85a3dad6aba [2020-10-27 04:57:09,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:57:09,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:57:09,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:09,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:57:09,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:57:09,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:09" (1/1) ... [2020-10-27 04:57:09,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa641a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:09, skipping insertion in model container [2020-10-27 04:57:09,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:09" (1/1) ... [2020-10-27 04:57:09,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:57:09,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:57:09,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:09,821 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:57:10,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:10,206 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:57:10,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10 WrapperNode [2020-10-27 04:57:10,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:10,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:57:10,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:57:10,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:57:10,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... [2020-10-27 04:57:10,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:57:10,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:57:10,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:57:10,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:57:10,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:57:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:57:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:57:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:57:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:57:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:57:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:57:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:57:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:57:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:57:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:57:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:57:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:57:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:57:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:57:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:57:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:57:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:57:12,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:57:12,203 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:57:12,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:12 BoogieIcfgContainer [2020-10-27 04:57:12,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:57:12,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:57:12,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:57:12,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:57:12,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:57:09" (1/3) ... [2020-10-27 04:57:12,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac133ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:12, skipping insertion in model container [2020-10-27 04:57:12,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:10" (2/3) ... [2020-10-27 04:57:12,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac133ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:12, skipping insertion in model container [2020-10-27 04:57:12,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:12" (3/3) ... [2020-10-27 04:57:12,216 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:57:12,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:57:12,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:57:12,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:57:12,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:57:12,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:57:12,282 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:57:12,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:57:12,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:57:12,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:57:12,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:57:12,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:57:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-10-27 04:57:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:57:12,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:12,331 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] [2020-10-27 04:57:12,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1974680425, now seen corresponding path program 1 times [2020-10-27 04:57:12,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:12,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185226239] [2020-10-27 04:57:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:17,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:17,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:57:17,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:57:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 04:57:17,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:57:17,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:57:18,439 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:18,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:57:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185226239] [2020-10-27 04:57:18,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:18,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:18,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815457493] [2020-10-27 04:57:18,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:18,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:18,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:18,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:18,658 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 5 states. [2020-10-27 04:57:22,287 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:23,708 INFO L93 Difference]: Finished difference Result 1124 states and 2034 transitions. [2020-10-27 04:57:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:57:23,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:57:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:23,737 INFO L225 Difference]: With dead ends: 1124 [2020-10-27 04:57:23,742 INFO L226 Difference]: Without dead ends: 744 [2020-10-27 04:57:23,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-27 04:57:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 721. [2020-10-27 04:57:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-27 04:57:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1032 transitions. [2020-10-27 04:57:23,916 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1032 transitions. Word has length 146 [2020-10-27 04:57:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:23,916 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 1032 transitions. [2020-10-27 04:57:23,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1032 transitions. [2020-10-27 04:57:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:57:23,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:23,923 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] [2020-10-27 04:57:23,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:57:23,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash 357658611, now seen corresponding path program 1 times [2020-10-27 04:57:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:23,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131152426] [2020-10-27 04:57:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:28,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:28,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:57:28,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:57:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:57:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:57:28,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:29,488 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:29,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:57:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:29,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131152426] [2020-10-27 04:57:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:29,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495850728] [2020-10-27 04:57:29,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:29,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:29,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:29,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:29,576 INFO L87 Difference]: Start difference. First operand 721 states and 1032 transitions. Second operand 5 states. [2020-10-27 04:57:32,142 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:33,460 INFO L93 Difference]: Finished difference Result 2087 states and 2975 transitions. [2020-10-27 04:57:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:33,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:57:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:33,471 INFO L225 Difference]: With dead ends: 2087 [2020-10-27 04:57:33,471 INFO L226 Difference]: Without dead ends: 1379 [2020-10-27 04:57:33,475 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 04:57:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-10-27 04:57:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1360. [2020-10-27 04:57:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-10-27 04:57:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1919 transitions. [2020-10-27 04:57:33,557 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1919 transitions. Word has length 147 [2020-10-27 04:57:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:33,559 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1919 transitions. [2020-10-27 04:57:33,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1919 transitions. [2020-10-27 04:57:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:57:33,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:33,565 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] [2020-10-27 04:57:33,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:57:33,566 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1099975653, now seen corresponding path program 1 times [2020-10-27 04:57:33,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:33,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40400069] [2020-10-27 04:57:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:57:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:57:39,301 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:39,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:57:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:39,441 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 04:57:39,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40400069] [2020-10-27 04:57:39,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:39,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:39,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33209480] [2020-10-27 04:57:39,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:39,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:39,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:39,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:39,447 INFO L87 Difference]: Start difference. First operand 1360 states and 1919 transitions. Second operand 5 states. [2020-10-27 04:57:42,163 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:43,445 INFO L93 Difference]: Finished difference Result 3935 states and 5530 transitions. [2020-10-27 04:57:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:43,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:57:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:43,460 INFO L225 Difference]: With dead ends: 3935 [2020-10-27 04:57:43,460 INFO L226 Difference]: Without dead ends: 2622 [2020-10-27 04:57:43,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2020-10-27 04:57:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2596. [2020-10-27 04:57:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-10-27 04:57:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3624 transitions. [2020-10-27 04:57:43,602 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3624 transitions. Word has length 148 [2020-10-27 04:57:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:43,603 INFO L481 AbstractCegarLoop]: Abstraction has 2596 states and 3624 transitions. [2020-10-27 04:57:43,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3624 transitions. [2020-10-27 04:57:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:57:43,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:43,608 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] [2020-10-27 04:57:43,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:57:43,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2134808656, now seen corresponding path program 1 times [2020-10-27 04:57:43,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:43,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722272600] [2020-10-27 04:57:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:57:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:49,158 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:49,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:49,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:49,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:57:49,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:49,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722272600] [2020-10-27 04:57:49,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:49,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:49,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485321434] [2020-10-27 04:57:49,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:49,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:49,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:49,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:49,256 INFO L87 Difference]: Start difference. First operand 2596 states and 3624 transitions. Second operand 5 states. [2020-10-27 04:57:52,377 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:53,964 INFO L93 Difference]: Finished difference Result 7101 states and 9948 transitions. [2020-10-27 04:57:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:53,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:57:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:53,989 INFO L225 Difference]: With dead ends: 7101 [2020-10-27 04:57:53,989 INFO L226 Difference]: Without dead ends: 5011 [2020-10-27 04:57:53,995 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 04:57:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2020-10-27 04:57:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 4994. [2020-10-27 04:57:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4994 states. [2020-10-27 04:57:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 6876 transitions. [2020-10-27 04:57:54,274 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 6876 transitions. Word has length 149 [2020-10-27 04:57:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:54,274 INFO L481 AbstractCegarLoop]: Abstraction has 4994 states and 6876 transitions. [2020-10-27 04:57:54,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 6876 transitions. [2020-10-27 04:57:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:57:54,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:54,283 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] [2020-10-27 04:57:54,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:57:54,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:54,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1778492486, now seen corresponding path program 1 times [2020-10-27 04:57:54,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:54,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895701746] [2020-10-27 04:57:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:59,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 04:57:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:59,854 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:59,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:59,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:59,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895701746] [2020-10-27 04:57:59,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:59,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:59,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378510475] [2020-10-27 04:57:59,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:59,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:59,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:59,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:59,954 INFO L87 Difference]: Start difference. First operand 4994 states and 6876 transitions. Second operand 5 states. [2020-10-27 04:58:02,921 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:04,373 INFO L93 Difference]: Finished difference Result 14485 states and 19902 transitions. [2020-10-27 04:58:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:04,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 04:58:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:04,419 INFO L225 Difference]: With dead ends: 14485 [2020-10-27 04:58:04,420 INFO L226 Difference]: Without dead ends: 9692 [2020-10-27 04:58:04,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9692 states. [2020-10-27 04:58:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9692 to 9658. [2020-10-27 04:58:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9658 states. [2020-10-27 04:58:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 13138 transitions. [2020-10-27 04:58:05,168 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 13138 transitions. Word has length 150 [2020-10-27 04:58:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:05,168 INFO L481 AbstractCegarLoop]: Abstraction has 9658 states and 13138 transitions. [2020-10-27 04:58:05,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 13138 transitions. [2020-10-27 04:58:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:58:05,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:05,186 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] [2020-10-27 04:58:05,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:58:05,186 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash -455262159, now seen corresponding path program 1 times [2020-10-27 04:58:05,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:05,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980065890] [2020-10-27 04:58:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:58:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:10,802 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:58:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:10,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980065890] [2020-10-27 04:58:10,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:10,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:10,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473681866] [2020-10-27 04:58:10,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:10,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:10,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:10,912 INFO L87 Difference]: Start difference. First operand 9658 states and 13138 transitions. Second operand 5 states. [2020-10-27 04:58:14,462 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:16,278 INFO L93 Difference]: Finished difference Result 27319 states and 37248 transitions. [2020-10-27 04:58:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:16,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-27 04:58:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:16,338 INFO L225 Difference]: With dead ends: 27319 [2020-10-27 04:58:16,338 INFO L226 Difference]: Without dead ends: 18741 [2020-10-27 04:58:16,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18741 states. [2020-10-27 04:58:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18741 to 18707. [2020-10-27 04:58:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18707 states. [2020-10-27 04:58:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18707 states to 18707 states and 25088 transitions. [2020-10-27 04:58:17,498 INFO L78 Accepts]: Start accepts. Automaton has 18707 states and 25088 transitions. Word has length 151 [2020-10-27 04:58:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:17,498 INFO L481 AbstractCegarLoop]: Abstraction has 18707 states and 25088 transitions. [2020-10-27 04:58:17,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 18707 states and 25088 transitions. [2020-10-27 04:58:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:58:17,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:17,533 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] [2020-10-27 04:58:17,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:58:17,534 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1775504954, now seen corresponding path program 1 times [2020-10-27 04:58:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:17,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153835051] [2020-10-27 04:58:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:58:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:58:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:23,053 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:23,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:23,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153835051] [2020-10-27 04:58:23,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:23,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919361817] [2020-10-27 04:58:23,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:23,135 INFO L87 Difference]: Start difference. First operand 18707 states and 25088 transitions. Second operand 5 states. [2020-10-27 04:58:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:25,831 INFO L93 Difference]: Finished difference Result 30435 states and 40813 transitions. [2020-10-27 04:58:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:25,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 04:58:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:25,857 INFO L225 Difference]: With dead ends: 30435 [2020-10-27 04:58:25,858 INFO L226 Difference]: Without dead ends: 12024 [2020-10-27 04:58:25,892 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 04:58:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2020-10-27 04:58:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 12024. [2020-10-27 04:58:26,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12024 states. [2020-10-27 04:58:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12024 states to 12024 states and 16060 transitions. [2020-10-27 04:58:26,576 INFO L78 Accepts]: Start accepts. Automaton has 12024 states and 16060 transitions. Word has length 152 [2020-10-27 04:58:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:26,576 INFO L481 AbstractCegarLoop]: Abstraction has 12024 states and 16060 transitions. [2020-10-27 04:58:26,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 12024 states and 16060 transitions. [2020-10-27 04:58:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:58:26,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:26,594 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] [2020-10-27 04:58:26,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:58:26,595 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:26,595 INFO L82 PathProgramCache]: Analyzing trace with hash 130884402, now seen corresponding path program 1 times [2020-10-27 04:58:26,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:26,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137047858] [2020-10-27 04:58:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:31,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:31,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 04:58:31,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:58:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:58:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:58:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:58:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:58:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 101 [2020-10-27 04:58:32,288 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:32,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:32,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:32,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:32,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:58:32,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:58:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:32,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137047858] [2020-10-27 04:58:32,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:32,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:32,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018170678] [2020-10-27 04:58:32,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:58:32,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:58:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:32,442 INFO L87 Difference]: Start difference. First operand 12024 states and 16060 transitions. Second operand 6 states. [2020-10-27 04:58:32,988 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 04:58:35,409 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:58:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:36,674 INFO L93 Difference]: Finished difference Result 28314 states and 38473 transitions. [2020-10-27 04:58:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:58:36,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-27 04:58:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:36,711 INFO L225 Difference]: With dead ends: 28314 [2020-10-27 04:58:36,712 INFO L226 Difference]: Without dead ends: 17884 [2020-10-27 04:58:36,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:58:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2020-10-27 04:58:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 17878. [2020-10-27 04:58:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17878 states. [2020-10-27 04:58:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17878 states to 17878 states and 24012 transitions. [2020-10-27 04:58:37,776 INFO L78 Accepts]: Start accepts. Automaton has 17878 states and 24012 transitions. Word has length 159 [2020-10-27 04:58:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:37,776 INFO L481 AbstractCegarLoop]: Abstraction has 17878 states and 24012 transitions. [2020-10-27 04:58:37,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:58:37,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17878 states and 24012 transitions. [2020-10-27 04:58:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:58:37,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:37,797 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] [2020-10-27 04:58:37,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:58:37,798 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash 691602824, now seen corresponding path program 1 times [2020-10-27 04:58:37,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:37,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454563521] [2020-10-27 04:58:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:58:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:43,282 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:43,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:43,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454563521] [2020-10-27 04:58:43,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:43,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:58:43,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368999810] [2020-10-27 04:58:43,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:58:43,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:43,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:58:43,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:58:43,328 INFO L87 Difference]: Start difference. First operand 17878 states and 24012 transitions. Second operand 4 states. [2020-10-27 04:58:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:46,724 INFO L93 Difference]: Finished difference Result 35289 states and 47509 transitions. [2020-10-27 04:58:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:58:46,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-27 04:58:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:46,751 INFO L225 Difference]: With dead ends: 35289 [2020-10-27 04:58:46,751 INFO L226 Difference]: Without dead ends: 21364 [2020-10-27 04:58:46,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:58:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21364 states. [2020-10-27 04:58:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21364 to 17878. [2020-10-27 04:58:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17878 states. [2020-10-27 04:58:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17878 states to 17878 states and 24011 transitions. [2020-10-27 04:58:47,903 INFO L78 Accepts]: Start accepts. Automaton has 17878 states and 24011 transitions. Word has length 159 [2020-10-27 04:58:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:47,904 INFO L481 AbstractCegarLoop]: Abstraction has 17878 states and 24011 transitions. [2020-10-27 04:58:47,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:58:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 17878 states and 24011 transitions. [2020-10-27 04:58:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 04:58:47,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:47,919 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 04:58:47,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:58:47,919 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2061800339, now seen corresponding path program 1 times [2020-10-27 04:58:47,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:47,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346934162] [2020-10-27 04:58:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:48,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:58:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:53,393 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:53,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:53,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:58:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:53,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346934162] [2020-10-27 04:58:53,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:53,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:53,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033592981] [2020-10-27 04:58:53,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:53,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:53,453 INFO L87 Difference]: Start difference. First operand 17878 states and 24011 transitions. Second operand 5 states. [2020-10-27 04:58:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:56,157 INFO L93 Difference]: Finished difference Result 28445 states and 38233 transitions. [2020-10-27 04:58:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:56,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 04:58:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:56,171 INFO L225 Difference]: With dead ends: 28445 [2020-10-27 04:58:56,172 INFO L226 Difference]: Without dead ends: 14520 [2020-10-27 04:58:56,182 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 04:58:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14520 states. [2020-10-27 04:58:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14520 to 14520. [2020-10-27 04:58:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14520 states. [2020-10-27 04:58:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14520 states to 14520 states and 19448 transitions. [2020-10-27 04:58:56,977 INFO L78 Accepts]: Start accepts. Automaton has 14520 states and 19448 transitions. Word has length 160 [2020-10-27 04:58:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:56,977 INFO L481 AbstractCegarLoop]: Abstraction has 14520 states and 19448 transitions. [2020-10-27 04:58:56,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14520 states and 19448 transitions. [2020-10-27 04:58:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 04:58:56,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:56,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:58:56,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:58:56,991 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1199162823, now seen corresponding path program 1 times [2020-10-27 04:58:56,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:56,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550972117] [2020-10-27 04:58:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:02,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:59:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:59:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:02,517 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:02,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:59:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:02,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550972117] [2020-10-27 04:59:02,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:02,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623101895] [2020-10-27 04:59:02,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:02,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:02,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:02,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:02,592 INFO L87 Difference]: Start difference. First operand 14520 states and 19448 transitions. Second operand 5 states. [2020-10-27 04:59:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:05,317 INFO L93 Difference]: Finished difference Result 25212 states and 33784 transitions. [2020-10-27 04:59:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:59:05,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 04:59:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:05,328 INFO L225 Difference]: With dead ends: 25212 [2020-10-27 04:59:05,328 INFO L226 Difference]: Without dead ends: 10752 [2020-10-27 04:59:05,339 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 04:59:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10752 states. [2020-10-27 04:59:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10752 to 10752. [2020-10-27 04:59:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10752 states. [2020-10-27 04:59:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10752 states to 10752 states and 14411 transitions. [2020-10-27 04:59:05,938 INFO L78 Accepts]: Start accepts. Automaton has 10752 states and 14411 transitions. Word has length 166 [2020-10-27 04:59:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:05,939 INFO L481 AbstractCegarLoop]: Abstraction has 10752 states and 14411 transitions. [2020-10-27 04:59:05,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10752 states and 14411 transitions. [2020-10-27 04:59:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:59:05,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:05,947 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] [2020-10-27 04:59:05,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:59:05,947 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2066683458, now seen corresponding path program 1 times [2020-10-27 04:59:05,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:05,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264339617] [2020-10-27 04:59:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:10,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:10,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:59:10,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:59:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:11,443 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:11,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:59:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:59:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:11,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264339617] [2020-10-27 04:59:11,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:11,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:11,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464208015] [2020-10-27 04:59:11,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:59:11,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:59:11,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:59:11,514 INFO L87 Difference]: Start difference. First operand 10752 states and 14411 transitions. Second operand 6 states. [2020-10-27 04:59:11,935 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:59:14,315 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:59:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:16,162 INFO L93 Difference]: Finished difference Result 28223 states and 38324 transitions. [2020-10-27 04:59:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:59:16,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-10-27 04:59:16,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:16,186 INFO L225 Difference]: With dead ends: 28223 [2020-10-27 04:59:16,187 INFO L226 Difference]: Without dead ends: 18547 [2020-10-27 04:59:16,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:59:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18547 states. [2020-10-27 04:59:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18547 to 18541. [2020-10-27 04:59:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18541 states. [2020-10-27 04:59:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18541 states to 18541 states and 24953 transitions. [2020-10-27 04:59:17,374 INFO L78 Accepts]: Start accepts. Automaton has 18541 states and 24953 transitions. Word has length 174 [2020-10-27 04:59:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:17,375 INFO L481 AbstractCegarLoop]: Abstraction has 18541 states and 24953 transitions. [2020-10-27 04:59:17,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:59:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18541 states and 24953 transitions. [2020-10-27 04:59:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:59:17,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:17,385 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] [2020-10-27 04:59:17,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:59:17,385 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1831088536, now seen corresponding path program 1 times [2020-10-27 04:59:17,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:17,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908398399] [2020-10-27 04:59:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:59:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:59:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:23,576 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:23,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:23,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:23,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:23,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908398399] [2020-10-27 04:59:23,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:23,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:59:23,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046166296] [2020-10-27 04:59:23,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:59:23,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:23,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:59:23,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:59:23,691 INFO L87 Difference]: Start difference. First operand 18541 states and 24953 transitions. Second operand 15 states. [2020-10-27 04:59:24,191 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:59:29,643 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 04:59:30,127 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 04:59:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:34,801 INFO L93 Difference]: Finished difference Result 43165 states and 60308 transitions. [2020-10-27 04:59:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:59:34,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2020-10-27 04:59:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:34,838 INFO L225 Difference]: With dead ends: 43165 [2020-10-27 04:59:34,838 INFO L226 Difference]: Without dead ends: 35086 [2020-10-27 04:59:34,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:59:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35086 states. [2020-10-27 04:59:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35086 to 19165. [2020-10-27 04:59:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-10-27 04:59:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 25681 transitions. [2020-10-27 04:59:36,426 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 25681 transitions. Word has length 174 [2020-10-27 04:59:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:36,427 INFO L481 AbstractCegarLoop]: Abstraction has 19165 states and 25681 transitions. [2020-10-27 04:59:36,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:59:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 25681 transitions. [2020-10-27 04:59:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:59:36,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:36,437 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] [2020-10-27 04:59:36,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:59:36,437 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:36,438 INFO L82 PathProgramCache]: Analyzing trace with hash 694132909, now seen corresponding path program 1 times [2020-10-27 04:59:36,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:36,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066998321] [2020-10-27 04:59:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:59:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 04:59:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,267 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:59:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:42,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066998321] [2020-10-27 04:59:42,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:42,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:59:42,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102379288] [2020-10-27 04:59:42,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:59:42,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:42,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:59:42,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:59:42,368 INFO L87 Difference]: Start difference. First operand 19165 states and 25681 transitions. Second operand 15 states. [2020-10-27 04:59:42,512 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-27 04:59:43,152 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-27 04:59:43,683 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 04:59:43,817 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-27 04:59:43,956 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-27 04:59:44,264 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 04:59:44,770 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-27 04:59:46,897 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-27 04:59:48,353 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-27 04:59:48,517 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-27 04:59:48,654 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 04:59:48,806 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-27 04:59:48,978 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-27 04:59:49,123 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 04:59:55,405 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 04:59:55,959 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:00:08,493 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 05:00:09,027 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:00:09,219 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-27 05:00:11,260 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-27 05:00:11,433 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-27 05:00:12,124 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:00:14,744 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:00:15,754 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-27 05:00:15,982 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-27 05:00:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:18,450 INFO L93 Difference]: Finished difference Result 98757 states and 141331 transitions. [2020-10-27 05:00:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-10-27 05:00:18,451 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2020-10-27 05:00:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:18,583 INFO L225 Difference]: With dead ends: 98757 [2020-10-27 05:00:18,583 INFO L226 Difference]: Without dead ends: 82508 [2020-10-27 05:00:18,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5372 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=2379, Invalid=11193, Unknown=0, NotChecked=0, Total=13572 [2020-10-27 05:00:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82508 states. [2020-10-27 05:00:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82508 to 27651. [2020-10-27 05:00:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27651 states. [2020-10-27 05:00:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27651 states to 27651 states and 38337 transitions. [2020-10-27 05:00:22,267 INFO L78 Accepts]: Start accepts. Automaton has 27651 states and 38337 transitions. Word has length 174 [2020-10-27 05:00:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:22,267 INFO L481 AbstractCegarLoop]: Abstraction has 27651 states and 38337 transitions. [2020-10-27 05:00:22,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 05:00:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 27651 states and 38337 transitions. [2020-10-27 05:00:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 05:00:22,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:22,278 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] [2020-10-27 05:00:22,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:00:22,278 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash -562289646, now seen corresponding path program 1 times [2020-10-27 05:00:22,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:22,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818968409] [2020-10-27 05:00:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 05:00:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:28,244 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:00:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:28,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:28,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:28,482 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 05:00:28,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818968409] [2020-10-27 05:00:28,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:28,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 05:00:28,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497917452] [2020-10-27 05:00:28,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:00:28,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:28,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:00:28,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:00:28,484 INFO L87 Difference]: Start difference. First operand 27651 states and 38337 transitions. Second operand 13 states. [2020-10-27 05:00:28,704 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-27 05:00:30,038 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2020-10-27 05:00:34,109 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 05:00:35,746 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 05:00:36,029 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 05:00:36,299 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 05:00:36,502 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 05:00:37,453 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 05:00:37,890 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 05:00:38,256 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 05:00:38,641 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 05:00:39,151 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45