/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:33:09,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:33:09,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:33:09,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:33:09,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:33:09,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:33:09,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:33:09,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:33:09,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:33:09,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:33:09,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:33:09,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:33:09,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:33:09,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:33:09,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:33:09,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:33:09,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:33:09,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:33:09,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:33:09,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:33:09,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:33:09,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:33:09,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:33:09,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:33:09,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:33:09,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:33:09,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:33:09,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:33:09,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:33:09,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:33:09,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:33:09,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:33:09,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:33:09,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:33:09,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:33:09,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:33:09,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:33:09,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:33:09,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:33:09,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:33:09,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:33:09,463 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 [2020-10-28 00:33:09,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:33:09,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:33:09,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:33:09,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:33:09,522 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:33:09,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:33:09,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:33:09,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:33:09,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:33:09,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:33:09,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:33:09,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:33:09,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:33:09,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:33:09,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:33:09,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:33:09,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:33:09,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:33:09,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:33:09,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:33:09,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:33:09,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:33:09,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:33:09,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:33:09,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:33:09,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:33:09,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:33:09,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:33:09,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:33:09,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:33:09,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:33:10,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:33:10,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:33:10,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:33:10,020 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:33:10,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:10,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25bc1af35/e73a9c56ace8492e98da873fec8a9492/FLAG10fe3e1cc [2020-10-28 00:33:10,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:33:10,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:10,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25bc1af35/e73a9c56ace8492e98da873fec8a9492/FLAG10fe3e1cc [2020-10-28 00:33:11,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25bc1af35/e73a9c56ace8492e98da873fec8a9492 [2020-10-28 00:33:11,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:33:11,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:33:11,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:11,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:33:11,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:33:11,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:11" (1/1) ... [2020-10-28 00:33:11,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c388ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:11, skipping insertion in model container [2020-10-28 00:33:11,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:11" (1/1) ... [2020-10-28 00:33:11,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:33:11,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:33:12,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:12,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:33:12,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:12,660 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:33:12,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12 WrapperNode [2020-10-28 00:33:12,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:12,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:33:12,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:33:12,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:33:12,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (1/1) ... [2020-10-28 00:33:12,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:33:12,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:33:12,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:33:12,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:33:12,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (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 [2020-10-28 00:33:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:33:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:33:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:33:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:33:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:33:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:33:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:33:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:33:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:33:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:33:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:33:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:33:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:33:15,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:33:15,213 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:33:15,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:15 BoogieIcfgContainer [2020-10-28 00:33:15,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:33:15,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:33:15,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:33:15,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:33:15,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:33:11" (1/3) ... [2020-10-28 00:33:15,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18475a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:15, skipping insertion in model container [2020-10-28 00:33:15,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:12" (2/3) ... [2020-10-28 00:33:15,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18475a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:15, skipping insertion in model container [2020-10-28 00:33:15,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:15" (3/3) ... [2020-10-28 00:33:15,233 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:15,245 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:33:15,251 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:33:15,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:33:15,296 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:33:15,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:33:15,296 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:33:15,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:33:15,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:33:15,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:33:15,297 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:33:15,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:33:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states. [2020-10-28 00:33:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 00:33:15,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:15,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:15,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:15,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1880527792, now seen corresponding path program 1 times [2020-10-28 00:33:15,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:15,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418732970] [2020-10-28 00:33:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:21,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 00:33:21,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:33:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 00:33:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:33:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 00:33:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 00:33:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:33:21,920 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:33:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:21,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 00:33:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:33:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:22,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418732970] [2020-10-28 00:33:22,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:22,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:33:22,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653083853] [2020-10-28 00:33:22,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:33:22,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:33:22,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:33:22,244 INFO L87 Difference]: Start difference. First operand 645 states. Second operand 4 states. [2020-10-28 00:33:23,035 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:33:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:27,919 INFO L93 Difference]: Finished difference Result 1180 states and 2070 transitions. [2020-10-28 00:33:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:33:27,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2020-10-28 00:33:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:27,950 INFO L225 Difference]: With dead ends: 1180 [2020-10-28 00:33:27,950 INFO L226 Difference]: Without dead ends: 978 [2020-10-28 00:33:27,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:33:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-28 00:33:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2020-10-28 00:33:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-28 00:33:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1538 transitions. [2020-10-28 00:33:28,121 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1538 transitions. Word has length 251 [2020-10-28 00:33:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:28,126 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1538 transitions. [2020-10-28 00:33:28,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:33:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1538 transitions. [2020-10-28 00:33:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 00:33:28,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:28,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:28,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:33:28,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:28,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1560200793, now seen corresponding path program 1 times [2020-10-28 00:33:28,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469958998] [2020-10-28 00:33:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 00:33:33,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:33:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:33:33,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:33:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:33:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 00:33:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:34,449 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:33:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:33:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:34,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:34,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469958998] [2020-10-28 00:33:34,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:34,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:33:34,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475620394] [2020-10-28 00:33:34,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:33:34,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:34,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:33:34,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:33:34,702 INFO L87 Difference]: Start difference. First operand 975 states and 1538 transitions. Second operand 5 states. [2020-10-28 00:33:39,778 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:33:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:41,902 INFO L93 Difference]: Finished difference Result 2861 states and 4509 transitions. [2020-10-28 00:33:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:33:41,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-28 00:33:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:41,916 INFO L225 Difference]: With dead ends: 2861 [2020-10-28 00:33:41,916 INFO L226 Difference]: Without dead ends: 1903 [2020-10-28 00:33:41,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:33:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-28 00:33:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1900. [2020-10-28 00:33:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-10-28 00:33:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2979 transitions. [2020-10-28 00:33:42,030 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2979 transitions. Word has length 251 [2020-10-28 00:33:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:42,031 INFO L481 AbstractCegarLoop]: Abstraction has 1900 states and 2979 transitions. [2020-10-28 00:33:42,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:33:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2979 transitions. [2020-10-28 00:33:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 00:33:42,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:42,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:42,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:33:42,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:42,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1173146121, now seen corresponding path program 1 times [2020-10-28 00:33:42,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:42,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718803720] [2020-10-28 00:33:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 00:33:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:33:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 00:33:47,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:33:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:33:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 00:33:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:33:47,986 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:33:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:48,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:48,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:48,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:33:48,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:48,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718803720] [2020-10-28 00:33:48,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:48,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:33:48,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510312416] [2020-10-28 00:33:48,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:33:48,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:48,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:33:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:33:48,389 INFO L87 Difference]: Start difference. First operand 1900 states and 2979 transitions. Second operand 4 states. [2020-10-28 00:33:55,427 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:33:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:57,348 INFO L93 Difference]: Finished difference Result 5488 states and 8575 transitions. [2020-10-28 00:33:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:33:57,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2020-10-28 00:33:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:57,383 INFO L225 Difference]: With dead ends: 5488 [2020-10-28 00:33:57,383 INFO L226 Difference]: Without dead ends: 3690 [2020-10-28 00:33:57,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:33:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2020-10-28 00:33:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3687. [2020-10-28 00:33:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2020-10-28 00:33:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5744 transitions. [2020-10-28 00:33:57,580 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5744 transitions. Word has length 253 [2020-10-28 00:33:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:57,581 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5744 transitions. [2020-10-28 00:33:57,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:33:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5744 transitions. [2020-10-28 00:33:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 00:33:57,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:57,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:57,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:33:57,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:57,591 INFO L82 PathProgramCache]: Analyzing trace with hash 782233170, now seen corresponding path program 1 times [2020-10-28 00:33:57,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:57,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428575961] [2020-10-28 00:33:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:02,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 00:34:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:34:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:34:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:34:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:34:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:03,500 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:34:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:03,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:03,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:34:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:03,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428575961] [2020-10-28 00:34:03,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:03,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:03,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218567515] [2020-10-28 00:34:03,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:03,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:03,651 INFO L87 Difference]: Start difference. First operand 3687 states and 5744 transitions. Second operand 5 states. [2020-10-28 00:34:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:11,933 INFO L93 Difference]: Finished difference Result 10701 states and 16597 transitions. [2020-10-28 00:34:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:11,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-28 00:34:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:11,974 INFO L225 Difference]: With dead ends: 10701 [2020-10-28 00:34:11,974 INFO L226 Difference]: Without dead ends: 7262 [2020-10-28 00:34:11,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:34:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2020-10-28 00:34:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 3861. [2020-10-28 00:34:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3861 states. [2020-10-28 00:34:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 6046 transitions. [2020-10-28 00:34:12,235 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 6046 transitions. Word has length 253 [2020-10-28 00:34:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:12,236 INFO L481 AbstractCegarLoop]: Abstraction has 3861 states and 6046 transitions. [2020-10-28 00:34:12,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:34:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 6046 transitions. [2020-10-28 00:34:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 00:34:12,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:12,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:12,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:34:12,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash -115873030, now seen corresponding path program 1 times [2020-10-28 00:34:12,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:12,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069684749] [2020-10-28 00:34:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:17,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 00:34:17,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 00:34:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:34:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 00:34:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:18,186 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:34:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:34:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:18,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069684749] [2020-10-28 00:34:18,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:18,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:18,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398310491] [2020-10-28 00:34:18,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:18,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:18,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:18,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:18,339 INFO L87 Difference]: Start difference. First operand 3861 states and 6046 transitions. Second operand 4 states. [2020-10-28 00:34:25,093 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:34:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:27,000 INFO L93 Difference]: Finished difference Result 10893 states and 16938 transitions. [2020-10-28 00:34:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:27,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-10-28 00:34:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:27,036 INFO L225 Difference]: With dead ends: 10893 [2020-10-28 00:34:27,037 INFO L226 Difference]: Without dead ends: 7380 [2020-10-28 00:34:27,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2020-10-28 00:34:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 7377. [2020-10-28 00:34:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7377 states. [2020-10-28 00:34:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 11445 transitions. [2020-10-28 00:34:27,459 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 11445 transitions. Word has length 254 [2020-10-28 00:34:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:27,459 INFO L481 AbstractCegarLoop]: Abstraction has 7377 states and 11445 transitions. [2020-10-28 00:34:27,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 11445 transitions. [2020-10-28 00:34:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 00:34:27,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:27,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:27,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:34:27,479 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:27,480 INFO L82 PathProgramCache]: Analyzing trace with hash -410811935, now seen corresponding path program 1 times [2020-10-28 00:34:27,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:27,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660760848] [2020-10-28 00:34:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:34:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:34:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:33,329 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:34:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:33,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660760848] [2020-10-28 00:34:33,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:33,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:33,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872477847] [2020-10-28 00:34:33,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:33,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:33,438 INFO L87 Difference]: Start difference. First operand 7377 states and 11445 transitions. Second operand 4 states. [2020-10-28 00:34:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:38,075 INFO L93 Difference]: Finished difference Result 20879 states and 32098 transitions. [2020-10-28 00:34:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:34:38,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 255 [2020-10-28 00:34:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:38,133 INFO L225 Difference]: With dead ends: 20879 [2020-10-28 00:34:38,133 INFO L226 Difference]: Without dead ends: 14123 [2020-10-28 00:34:38,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-10-28 00:34:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 7474. [2020-10-28 00:34:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7474 states. [2020-10-28 00:34:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 11575 transitions. [2020-10-28 00:34:38,722 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 11575 transitions. Word has length 255 [2020-10-28 00:34:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:38,722 INFO L481 AbstractCegarLoop]: Abstraction has 7474 states and 11575 transitions. [2020-10-28 00:34:38,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 11575 transitions. [2020-10-28 00:34:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 00:34:38,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:38,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:38,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:34:38,738 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1914869838, now seen corresponding path program 1 times [2020-10-28 00:34:38,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:38,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668637598] [2020-10-28 00:34:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:34:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 00:34:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:44,580 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:34:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:44,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668637598] [2020-10-28 00:34:44,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:44,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:44,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134588230] [2020-10-28 00:34:44,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:44,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:44,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:44,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:44,699 INFO L87 Difference]: Start difference. First operand 7474 states and 11575 transitions. Second operand 4 states. [2020-10-28 00:34:50,590 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:34:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:50,755 INFO L93 Difference]: Finished difference Result 16540 states and 25807 transitions. [2020-10-28 00:34:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:50,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 255 [2020-10-28 00:34:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:50,781 INFO L225 Difference]: With dead ends: 16540 [2020-10-28 00:34:50,781 INFO L226 Difference]: Without dead ends: 10781 [2020-10-28 00:34:50,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10781 states. [2020-10-28 00:34:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10781 to 9386. [2020-10-28 00:34:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9386 states. [2020-10-28 00:34:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9386 states to 9386 states and 14731 transitions. [2020-10-28 00:34:51,492 INFO L78 Accepts]: Start accepts. Automaton has 9386 states and 14731 transitions. Word has length 255 [2020-10-28 00:34:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:51,493 INFO L481 AbstractCegarLoop]: Abstraction has 9386 states and 14731 transitions. [2020-10-28 00:34:51,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9386 states and 14731 transitions. [2020-10-28 00:34:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 00:34:51,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:51,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:51,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:34:51,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:51,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:51,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1986854426, now seen corresponding path program 1 times [2020-10-28 00:34:51,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:51,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543186057] [2020-10-28 00:34:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:56,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:56,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 00:34:56,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:34:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 00:34:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:34:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:57,433 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:34:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:57,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:57,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:57,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543186057] [2020-10-28 00:34:57,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:57,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:57,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581949246] [2020-10-28 00:34:57,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:57,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:57,527 INFO L87 Difference]: Start difference. First operand 9386 states and 14731 transitions. Second operand 5 states. [2020-10-28 00:35:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:02,173 INFO L93 Difference]: Finished difference Result 16937 states and 26457 transitions. [2020-10-28 00:35:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:02,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-28 00:35:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:02,195 INFO L225 Difference]: With dead ends: 16937 [2020-10-28 00:35:02,195 INFO L226 Difference]: Without dead ends: 8378 [2020-10-28 00:35:02,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:35:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2020-10-28 00:35:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 8322. [2020-10-28 00:35:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8322 states. [2020-10-28 00:35:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 13056 transitions. [2020-10-28 00:35:02,702 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 13056 transitions. Word has length 256 [2020-10-28 00:35:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:02,703 INFO L481 AbstractCegarLoop]: Abstraction has 8322 states and 13056 transitions. [2020-10-28 00:35:02,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 13056 transitions. [2020-10-28 00:35:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 00:35:02,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:02,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:02,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:35:02,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash -137849359, now seen corresponding path program 1 times [2020-10-28 00:35:02,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:02,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020766508] [2020-10-28 00:35:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:35:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:08,514 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:35:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:08,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020766508] [2020-10-28 00:35:08,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:08,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:08,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717814373] [2020-10-28 00:35:08,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:08,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:08,613 INFO L87 Difference]: Start difference. First operand 8322 states and 13056 transitions. Second operand 4 states. [2020-10-28 00:35:14,667 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:35:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:15,137 INFO L93 Difference]: Finished difference Result 19225 states and 30469 transitions. [2020-10-28 00:35:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:15,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-10-28 00:35:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:15,168 INFO L225 Difference]: With dead ends: 19225 [2020-10-28 00:35:15,168 INFO L226 Difference]: Without dead ends: 12583 [2020-10-28 00:35:15,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2020-10-28 00:35:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11364. [2020-10-28 00:35:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11364 states. [2020-10-28 00:35:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 18049 transitions. [2020-10-28 00:35:15,898 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 18049 transitions. Word has length 257 [2020-10-28 00:35:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:15,898 INFO L481 AbstractCegarLoop]: Abstraction has 11364 states and 18049 transitions. [2020-10-28 00:35:15,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 18049 transitions. [2020-10-28 00:35:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 00:35:15,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:15,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:15,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:35:15,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash 390847790, now seen corresponding path program 1 times [2020-10-28 00:35:15,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:15,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839471865] [2020-10-28 00:35:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:20,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 00:35:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:35:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:21,696 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:35:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:21,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839471865] [2020-10-28 00:35:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:21,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334004805] [2020-10-28 00:35:21,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:21,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:21,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:21,786 INFO L87 Difference]: Start difference. First operand 11364 states and 18049 transitions. Second operand 4 states. [2020-10-28 00:35:27,356 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:35:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:28,233 INFO L93 Difference]: Finished difference Result 27659 states and 44443 transitions. [2020-10-28 00:35:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:28,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-28 00:35:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:28,260 INFO L225 Difference]: With dead ends: 27659 [2020-10-28 00:35:28,261 INFO L226 Difference]: Without dead ends: 18107 [2020-10-28 00:35:28,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18107 states. [2020-10-28 00:35:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18107 to 16830. [2020-10-28 00:35:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16830 states. [2020-10-28 00:35:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16830 states to 16830 states and 26975 transitions. [2020-10-28 00:35:29,237 INFO L78 Accepts]: Start accepts. Automaton has 16830 states and 26975 transitions. Word has length 258 [2020-10-28 00:35:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:29,237 INFO L481 AbstractCegarLoop]: Abstraction has 16830 states and 26975 transitions. [2020-10-28 00:35:29,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 16830 states and 26975 transitions. [2020-10-28 00:35:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 00:35:29,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:29,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:29,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:35:29,248 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:29,249 INFO L82 PathProgramCache]: Analyzing trace with hash 610917187, now seen corresponding path program 1 times [2020-10-28 00:35:29,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:29,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255888225] [2020-10-28 00:35:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 00:35:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 00:35:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:35,167 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:35:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:35,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255888225] [2020-10-28 00:35:35,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:35,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:35,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082598415] [2020-10-28 00:35:35,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:35,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:35,338 INFO L87 Difference]: Start difference. First operand 16830 states and 26975 transitions. Second operand 5 states. [2020-10-28 00:35:40,313 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:35:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:43,360 INFO L93 Difference]: Finished difference Result 49447 states and 79156 transitions. [2020-10-28 00:35:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:35:43,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-28 00:35:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:43,398 INFO L225 Difference]: With dead ends: 49447 [2020-10-28 00:35:43,398 INFO L226 Difference]: Without dead ends: 32773 [2020-10-28 00:35:43,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:35:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32773 states. [2020-10-28 00:35:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32773 to 32770. [2020-10-28 00:35:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32770 states. [2020-10-28 00:35:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32770 states to 32770 states and 52174 transitions. [2020-10-28 00:35:45,234 INFO L78 Accepts]: Start accepts. Automaton has 32770 states and 52174 transitions. Word has length 258 [2020-10-28 00:35:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:45,234 INFO L481 AbstractCegarLoop]: Abstraction has 32770 states and 52174 transitions. [2020-10-28 00:35:45,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 32770 states and 52174 transitions. [2020-10-28 00:35:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 00:35:45,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:45,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:45,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:35:45,253 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1049671902, now seen corresponding path program 1 times [2020-10-28 00:35:45,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:45,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010211791] [2020-10-28 00:35:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 00:35:50,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:35:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:35:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:35:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 00:35:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:51,103 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:35:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:51,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:51,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:51,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:51,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010211791] [2020-10-28 00:35:51,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:51,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:51,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294343021] [2020-10-28 00:35:51,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:51,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:51,215 INFO L87 Difference]: Start difference. First operand 32770 states and 52174 transitions. Second operand 4 states. [2020-10-28 00:35:58,579 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:36:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:02,966 INFO L93 Difference]: Finished difference Result 96332 states and 153274 transitions. [2020-10-28 00:36:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:02,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 260 [2020-10-28 00:36:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:03,057 INFO L225 Difference]: With dead ends: 96332 [2020-10-28 00:36:03,057 INFO L226 Difference]: Without dead ends: 64162 [2020-10-28 00:36:03,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64162 states. [2020-10-28 00:36:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64162 to 64159. [2020-10-28 00:36:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64159 states. [2020-10-28 00:36:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64159 states to 64159 states and 101653 transitions. [2020-10-28 00:36:06,747 INFO L78 Accepts]: Start accepts. Automaton has 64159 states and 101653 transitions. Word has length 260 [2020-10-28 00:36:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:06,748 INFO L481 AbstractCegarLoop]: Abstraction has 64159 states and 101653 transitions. [2020-10-28 00:36:06,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 64159 states and 101653 transitions. [2020-10-28 00:36:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 00:36:06,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:06,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:06,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:36:06,773 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -521346845, now seen corresponding path program 1 times [2020-10-28 00:36:06,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:06,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397188321] [2020-10-28 00:36:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:11,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 00:36:11,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:11,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:36:11,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:36:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:36:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:12,641 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:36:12,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:12,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397188321] [2020-10-28 00:36:12,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:12,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:12,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095271056] [2020-10-28 00:36:12,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:12,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:12,765 INFO L87 Difference]: Start difference. First operand 64159 states and 101653 transitions. Second operand 5 states. [2020-10-28 00:36:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:27,099 INFO L93 Difference]: Finished difference Result 187695 states and 296900 transitions. [2020-10-28 00:36:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:27,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-28 00:36:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:27,288 INFO L225 Difference]: With dead ends: 187695 [2020-10-28 00:36:27,289 INFO L226 Difference]: Without dead ends: 127262 [2020-10-28 00:36:27,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:36:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127262 states. [2020-10-28 00:36:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127262 to 67111. [2020-10-28 00:36:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67111 states. [2020-10-28 00:36:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67111 states to 67111 states and 106549 transitions. [2020-10-28 00:36:32,668 INFO L78 Accepts]: Start accepts. Automaton has 67111 states and 106549 transitions. Word has length 260 [2020-10-28 00:36:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:32,669 INFO L481 AbstractCegarLoop]: Abstraction has 67111 states and 106549 transitions. [2020-10-28 00:36:32,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:36:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 67111 states and 106549 transitions. [2020-10-28 00:36:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 00:36:32,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:32,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:32,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:36:32,692 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash 737793143, now seen corresponding path program 1 times [2020-10-28 00:36:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:32,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270947012] [2020-10-28 00:36:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 00:36:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 00:36:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:38,510 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:36:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:38,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270947012] [2020-10-28 00:36:38,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:38,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:38,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828018010] [2020-10-28 00:36:38,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:38,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:38,690 INFO L87 Difference]: Start difference. First operand 67111 states and 106549 transitions. Second operand 4 states.