/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:03,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:03,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:03,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:03,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:03,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:03,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:03,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:03,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:03,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:03,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:03,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:03,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:03,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:03,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:03,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:03,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:03,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:03,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:03,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:03,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:03,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:03,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:03,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:03,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:03,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:03,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:03,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:03,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:03,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:03,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:03,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:03,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:03,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:03,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:03,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:03,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:03,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:03,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:03,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:03,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:03,455 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 [2020-10-29 12:55:03,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:03,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:03,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:03,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:03,513 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:03,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:03,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:03,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:03,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:03,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:03,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:03,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:03,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:03,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:03,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:03,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:03,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:03,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:03,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:03,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:03,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:03,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:03,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:03,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:03,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:03,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:03,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:03,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:03,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:03,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:04,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:04,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:04,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:04,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:04,064 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:04,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:04,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bbc064f/8ec75d76ecfe460c887c6a412237de6c/FLAGbbccca8cb [2020-10-29 12:55:04,982 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:55:04,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:04,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bbc064f/8ec75d76ecfe460c887c6a412237de6c/FLAGbbccca8cb [2020-10-29 12:55:05,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bbc064f/8ec75d76ecfe460c887c6a412237de6c [2020-10-29 12:55:05,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:55:05,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:55:05,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:05,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:55:05,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:55:05,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:05" (1/1) ... [2020-10-29 12:55:05,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281a42ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:05, skipping insertion in model container [2020-10-29 12:55:05,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:05" (1/1) ... [2020-10-29 12:55:05,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:55:05,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:55:05,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:05,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:55:06,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:06,040 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:55:06,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06 WrapperNode [2020-10-29 12:55:06,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:06,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:55:06,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:55:06,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:55:06,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (1/1) ... [2020-10-29 12:55:06,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:55:06,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:55:06,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:55:06,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:55:06,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (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 [2020-10-29 12:55:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:55:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:55:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:55:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:55:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:55:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:55:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:55:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:55:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:55:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:55:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:55:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:55:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:55:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:55:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:55:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:55:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:55:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:55:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:55:07,466 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:55:07,467 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:55:07,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:07 BoogieIcfgContainer [2020-10-29 12:55:07,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:55:07,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:55:07,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:55:07,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:55:07,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:55:05" (1/3) ... [2020-10-29 12:55:07,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100e1c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:07, skipping insertion in model container [2020-10-29 12:55:07,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:06" (2/3) ... [2020-10-29 12:55:07,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100e1c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:07, skipping insertion in model container [2020-10-29 12:55:07,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:07" (3/3) ... [2020-10-29 12:55:07,479 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:07,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:55:07,497 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:55:07,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:55:07,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:55:07,542 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:55:07,542 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:55:07,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:55:07,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:55:07,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:55:07,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:55:07,543 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:55:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2020-10-29 12:55:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:55:07,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:07,580 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] [2020-10-29 12:55:07,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1018272144, now seen corresponding path program 1 times [2020-10-29 12:55:07,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:07,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475248966] [2020-10-29 12:55:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 12:55:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:55:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 12:55:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:13,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:55:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:55:13,677 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:13,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:13,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:55:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:13,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475248966] [2020-10-29 12:55:13,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:13,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:13,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498486424] [2020-10-29 12:55:13,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:13,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:13,828 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 5 states. [2020-10-29 12:55:16,057 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:55:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:17,179 INFO L93 Difference]: Finished difference Result 610 states and 1086 transitions. [2020-10-29 12:55:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:55:17,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-29 12:55:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:17,199 INFO L225 Difference]: With dead ends: 610 [2020-10-29 12:55:17,199 INFO L226 Difference]: Without dead ends: 448 [2020-10-29 12:55:17,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-29 12:55:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 425. [2020-10-29 12:55:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-29 12:55:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 620 transitions. [2020-10-29 12:55:17,303 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 620 transitions. Word has length 96 [2020-10-29 12:55:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:17,304 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 620 transitions. [2020-10-29 12:55:17,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 620 transitions. [2020-10-29 12:55:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:55:17,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:17,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:55:17,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:55:17,310 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash 597184271, now seen corresponding path program 1 times [2020-10-29 12:55:17,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:17,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578508239] [2020-10-29 12:55:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:55:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:55:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:55:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:22,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:55:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:22,812 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:55:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:22,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:22,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578508239] [2020-10-29 12:55:22,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:22,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:22,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672706489] [2020-10-29 12:55:22,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:22,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:22,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:22,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:22,913 INFO L87 Difference]: Start difference. First operand 425 states and 620 transitions. Second operand 5 states. [2020-10-29 12:55:24,650 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:55:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:25,701 INFO L93 Difference]: Finished difference Result 1200 states and 1739 transitions. [2020-10-29 12:55:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:25,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-29 12:55:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:25,707 INFO L225 Difference]: With dead ends: 1200 [2020-10-29 12:55:25,708 INFO L226 Difference]: Without dead ends: 808 [2020-10-29 12:55:25,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-29 12:55:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 785. [2020-10-29 12:55:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-29 12:55:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1133 transitions. [2020-10-29 12:55:25,794 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1133 transitions. Word has length 97 [2020-10-29 12:55:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:25,794 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 1133 transitions. [2020-10-29 12:55:25,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1133 transitions. [2020-10-29 12:55:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 12:55:25,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:25,799 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] [2020-10-29 12:55:25,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:55:25,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:25,800 INFO L82 PathProgramCache]: Analyzing trace with hash -813703182, now seen corresponding path program 1 times [2020-10-29 12:55:25,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:25,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041686623] [2020-10-29 12:55:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:30,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 12:55:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:55:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:55:30,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:30,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:55:30,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:31,223 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:31,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:31,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041686623] [2020-10-29 12:55:31,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:31,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:31,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418497754] [2020-10-29 12:55:31,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:31,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:31,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:31,291 INFO L87 Difference]: Start difference. First operand 785 states and 1133 transitions. Second operand 5 states. [2020-10-29 12:55:32,903 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:55:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:33,794 INFO L93 Difference]: Finished difference Result 2291 states and 3300 transitions. [2020-10-29 12:55:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:33,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-29 12:55:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:33,805 INFO L225 Difference]: With dead ends: 2291 [2020-10-29 12:55:33,806 INFO L226 Difference]: Without dead ends: 1519 [2020-10-29 12:55:33,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-29 12:55:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1499. [2020-10-29 12:55:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2020-10-29 12:55:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2141 transitions. [2020-10-29 12:55:33,960 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2141 transitions. Word has length 98 [2020-10-29 12:55:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:33,960 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2141 transitions. [2020-10-29 12:55:33,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2141 transitions. [2020-10-29 12:55:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 12:55:33,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:33,964 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] [2020-10-29 12:55:33,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:55:33,965 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1968494125, now seen corresponding path program 1 times [2020-10-29 12:55:33,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:33,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507309982] [2020-10-29 12:55:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:34,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:55:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:55:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:55:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:39,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:55:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:39,506 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:39,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:39,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:39,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:39,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:55:39,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:39,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:39,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507309982] [2020-10-29 12:55:39,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:39,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:39,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979300868] [2020-10-29 12:55:39,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:39,594 INFO L87 Difference]: Start difference. First operand 1499 states and 2141 transitions. Second operand 5 states. [2020-10-29 12:55:41,292 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:55:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:42,383 INFO L93 Difference]: Finished difference Result 3794 states and 5488 transitions. [2020-10-29 12:55:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:42,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-29 12:55:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:42,401 INFO L225 Difference]: With dead ends: 3794 [2020-10-29 12:55:42,401 INFO L226 Difference]: Without dead ends: 2897 [2020-10-29 12:55:42,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-10-29 12:55:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2879. [2020-10-29 12:55:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-29 12:55:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4070 transitions. [2020-10-29 12:55:42,629 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4070 transitions. Word has length 99 [2020-10-29 12:55:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:42,630 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 4070 transitions. [2020-10-29 12:55:42,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4070 transitions. [2020-10-29 12:55:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:55:42,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:42,636 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] [2020-10-29 12:55:42,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:55:42,636 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1497116717, now seen corresponding path program 1 times [2020-10-29 12:55:42,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:42,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877190119] [2020-10-29 12:55:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:47,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:47,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:55:47,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:55:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:55:47,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:47,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:55:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:48,251 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:48,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:48,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:55:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:48,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:48,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877190119] [2020-10-29 12:55:48,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:48,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:48,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933139505] [2020-10-29 12:55:48,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:48,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:48,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:48,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:48,358 INFO L87 Difference]: Start difference. First operand 2879 states and 4070 transitions. Second operand 5 states. [2020-10-29 12:55:50,354 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:55:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:51,602 INFO L93 Difference]: Finished difference Result 7388 states and 10542 transitions. [2020-10-29 12:55:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:51,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-29 12:55:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:51,632 INFO L225 Difference]: With dead ends: 7388 [2020-10-29 12:55:51,632 INFO L226 Difference]: Without dead ends: 5517 [2020-10-29 12:55:51,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2020-10-29 12:55:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5505. [2020-10-29 12:55:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5505 states. [2020-10-29 12:55:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 7674 transitions. [2020-10-29 12:55:52,240 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 7674 transitions. Word has length 100 [2020-10-29 12:55:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:52,241 INFO L481 AbstractCegarLoop]: Abstraction has 5505 states and 7674 transitions. [2020-10-29 12:55:52,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 7674 transitions. [2020-10-29 12:55:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 12:55:52,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:52,251 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] [2020-10-29 12:55:52,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:55:52,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash 564996941, now seen corresponding path program 1 times [2020-10-29 12:55:52,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:52,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763886886] [2020-10-29 12:55:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:55:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:55:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:55:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:57,685 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:55:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:57,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763886886] [2020-10-29 12:55:57,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:57,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:57,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024826302] [2020-10-29 12:55:57,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:57,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:57,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:57,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:57,748 INFO L87 Difference]: Start difference. First operand 5505 states and 7674 transitions. Second operand 5 states. [2020-10-29 12:55:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:59,357 INFO L93 Difference]: Finished difference Result 9622 states and 13367 transitions. [2020-10-29 12:55:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:55:59,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-29 12:55:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:59,385 INFO L225 Difference]: With dead ends: 9622 [2020-10-29 12:55:59,386 INFO L226 Difference]: Without dead ends: 4225 [2020-10-29 12:55:59,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:55:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2020-10-29 12:55:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4225. [2020-10-29 12:55:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4225 states. [2020-10-29 12:55:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 5870 transitions. [2020-10-29 12:55:59,819 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 5870 transitions. Word has length 101 [2020-10-29 12:55:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:59,819 INFO L481 AbstractCegarLoop]: Abstraction has 4225 states and 5870 transitions. [2020-10-29 12:55:59,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 5870 transitions. [2020-10-29 12:55:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 12:55:59,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:59,826 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] [2020-10-29 12:55:59,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:55:59,827 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:59,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1905250902, now seen corresponding path program 1 times [2020-10-29 12:55:59,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:59,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316959689] [2020-10-29 12:55:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:04,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:56:04,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:56:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:05,300 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:05,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:05,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316959689] [2020-10-29 12:56:05,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:05,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:05,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070072675] [2020-10-29 12:56:05,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:05,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:05,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:05,362 INFO L87 Difference]: Start difference. First operand 4225 states and 5870 transitions. Second operand 5 states. [2020-10-29 12:56:07,113 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:56:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:08,293 INFO L93 Difference]: Finished difference Result 10796 states and 14958 transitions. [2020-10-29 12:56:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:08,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-29 12:56:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:08,325 INFO L225 Difference]: With dead ends: 10796 [2020-10-29 12:56:08,325 INFO L226 Difference]: Without dead ends: 6802 [2020-10-29 12:56:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6802 states. [2020-10-29 12:56:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6802 to 6787. [2020-10-29 12:56:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6787 states. [2020-10-29 12:56:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 9254 transitions. [2020-10-29 12:56:08,930 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 9254 transitions. Word has length 104 [2020-10-29 12:56:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:08,931 INFO L481 AbstractCegarLoop]: Abstraction has 6787 states and 9254 transitions. [2020-10-29 12:56:08,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 9254 transitions. [2020-10-29 12:56:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:56:08,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:08,942 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] [2020-10-29 12:56:08,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:56:08,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1788425631, now seen corresponding path program 1 times [2020-10-29 12:56:08,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:08,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466814613] [2020-10-29 12:56:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:56:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:13,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:56:13,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:14,477 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:14,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:14,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:56:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:14,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:14,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466814613] [2020-10-29 12:56:14,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:14,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:14,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695033043] [2020-10-29 12:56:14,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:56:14,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:56:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:14,573 INFO L87 Difference]: Start difference. First operand 6787 states and 9254 transitions. Second operand 6 states. [2020-10-29 12:56:15,017 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:56:16,423 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:56:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:17,363 INFO L93 Difference]: Finished difference Result 14509 states and 20543 transitions. [2020-10-29 12:56:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:56:17,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 12:56:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:17,397 INFO L225 Difference]: With dead ends: 14509 [2020-10-29 12:56:17,398 INFO L226 Difference]: Without dead ends: 9408 [2020-10-29 12:56:17,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:56:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2020-10-29 12:56:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 9405. [2020-10-29 12:56:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9405 states. [2020-10-29 12:56:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13113 transitions. [2020-10-29 12:56:18,132 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13113 transitions. Word has length 106 [2020-10-29 12:56:18,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:18,132 INFO L481 AbstractCegarLoop]: Abstraction has 9405 states and 13113 transitions. [2020-10-29 12:56:18,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:56:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13113 transitions. [2020-10-29 12:56:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:56:18,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:18,144 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] [2020-10-29 12:56:18,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:56:18,145 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 284274822, now seen corresponding path program 1 times [2020-10-29 12:56:18,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:18,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485836751] [2020-10-29 12:56:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:56:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:23,605 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:23,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:23,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:23,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:23,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:23,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485836751] [2020-10-29 12:56:23,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:23,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:23,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819479419] [2020-10-29 12:56:23,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:23,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:23,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:23,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:23,651 INFO L87 Difference]: Start difference. First operand 9405 states and 13113 transitions. Second operand 5 states. [2020-10-29 12:56:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:25,332 INFO L93 Difference]: Finished difference Result 15687 states and 21869 transitions. [2020-10-29 12:56:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:25,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 12:56:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:25,344 INFO L225 Difference]: With dead ends: 15687 [2020-10-29 12:56:25,344 INFO L226 Difference]: Without dead ends: 6459 [2020-10-29 12:56:25,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2020-10-29 12:56:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6449. [2020-10-29 12:56:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6449 states. [2020-10-29 12:56:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6449 states to 6449 states and 8964 transitions. [2020-10-29 12:56:25,952 INFO L78 Accepts]: Start accepts. Automaton has 6449 states and 8964 transitions. Word has length 106 [2020-10-29 12:56:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:25,952 INFO L481 AbstractCegarLoop]: Abstraction has 6449 states and 8964 transitions. [2020-10-29 12:56:25,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6449 states and 8964 transitions. [2020-10-29 12:56:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:56:25,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:25,965 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] [2020-10-29 12:56:25,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:56:25,966 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1799832238, now seen corresponding path program 1 times [2020-10-29 12:56:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:25,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876049444] [2020-10-29 12:56:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:26,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 12:56:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:31,436 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:31,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:31,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:56:31,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:31,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:31,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876049444] [2020-10-29 12:56:31,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:31,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:31,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461698183] [2020-10-29 12:56:31,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:31,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:31,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:31,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:31,492 INFO L87 Difference]: Start difference. First operand 6449 states and 8964 transitions. Second operand 5 states. [2020-10-29 12:56:31,907 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:56:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:34,603 INFO L93 Difference]: Finished difference Result 11606 states and 16020 transitions. [2020-10-29 12:56:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:56:34,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-29 12:56:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:34,617 INFO L225 Difference]: With dead ends: 11606 [2020-10-29 12:56:34,617 INFO L226 Difference]: Without dead ends: 6445 [2020-10-29 12:56:34,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2020-10-29 12:56:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6429. [2020-10-29 12:56:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6429 states. [2020-10-29 12:56:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 8884 transitions. [2020-10-29 12:56:35,205 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 8884 transitions. Word has length 109 [2020-10-29 12:56:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 6429 states and 8884 transitions. [2020-10-29 12:56:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 8884 transitions. [2020-10-29 12:56:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 12:56:35,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:35,211 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] [2020-10-29 12:56:35,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:56:35,212 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:35,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1024855982, now seen corresponding path program 1 times [2020-10-29 12:56:35,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:35,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61279526] [2020-10-29 12:56:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:56:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:56:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:56:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:40,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:56:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 12:56:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:40,891 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:40,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61279526] [2020-10-29 12:56:40,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:40,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:56:40,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835546197] [2020-10-29 12:56:40,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:56:40,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:56:40,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:56:40,957 INFO L87 Difference]: Start difference. First operand 6429 states and 8884 transitions. Second operand 11 states. [2020-10-29 12:56:41,469 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:56:44,006 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-29 12:56:44,855 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-29 12:56:47,594 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-29 12:56:48,422 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2020-10-29 12:56:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:50,841 INFO L93 Difference]: Finished difference Result 32373 states and 48464 transitions. [2020-10-29 12:56:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 12:56:50,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-29 12:56:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:50,910 INFO L225 Difference]: With dead ends: 32373 [2020-10-29 12:56:50,910 INFO L226 Difference]: Without dead ends: 27920 [2020-10-29 12:56:50,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 12:56:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27920 states. [2020-10-29 12:56:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27920 to 10182. [2020-10-29 12:56:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10182 states. [2020-10-29 12:56:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10182 states to 10182 states and 14284 transitions. [2020-10-29 12:56:52,361 INFO L78 Accepts]: Start accepts. Automaton has 10182 states and 14284 transitions. Word has length 110 [2020-10-29 12:56:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:52,361 INFO L481 AbstractCegarLoop]: Abstraction has 10182 states and 14284 transitions. [2020-10-29 12:56:52,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:56:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10182 states and 14284 transitions. [2020-10-29 12:56:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 12:56:52,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:52,367 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] [2020-10-29 12:56:52,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:56:52,367 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash 759116498, now seen corresponding path program 1 times [2020-10-29 12:56:52,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:52,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535170252] [2020-10-29 12:56:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 12:56:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:57,799 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:56:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:57,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535170252] [2020-10-29 12:56:57,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:57,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:57,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210311773] [2020-10-29 12:56:57,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:56:57,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:57,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:56:57,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:57,857 INFO L87 Difference]: Start difference. First operand 10182 states and 14284 transitions. Second operand 6 states. [2020-10-29 12:56:58,291 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:57:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:00,829 INFO L93 Difference]: Finished difference Result 18525 states and 26405 transitions. [2020-10-29 12:57:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:57:00,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-29 12:57:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:00,855 INFO L225 Difference]: With dead ends: 18525 [2020-10-29 12:57:00,855 INFO L226 Difference]: Without dead ends: 10182 [2020-10-29 12:57:00,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:57:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2020-10-29 12:57:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 10182. [2020-10-29 12:57:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10182 states. [2020-10-29 12:57:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10182 states to 10182 states and 14126 transitions. [2020-10-29 12:57:02,149 INFO L78 Accepts]: Start accepts. Automaton has 10182 states and 14126 transitions. Word has length 110 [2020-10-29 12:57:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:02,149 INFO L481 AbstractCegarLoop]: Abstraction has 10182 states and 14126 transitions. [2020-10-29 12:57:02,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:57:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10182 states and 14126 transitions. [2020-10-29 12:57:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 12:57:02,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:02,156 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] [2020-10-29 12:57:02,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:57:02,156 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1435502135, now seen corresponding path program 1 times [2020-10-29 12:57:02,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:02,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974121879] [2020-10-29 12:57:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:03,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:03,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:57:03,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:57:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1766 [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:57:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:04,387 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:57:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:04,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:04,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974121879] [2020-10-29 12:57:04,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:04,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:04,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718978216] [2020-10-29 12:57:04,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:04,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:04,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:04,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:04,425 INFO L87 Difference]: Start difference. First operand 10182 states and 14126 transitions. Second operand 5 states. [2020-10-29 12:57:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:06,598 INFO L93 Difference]: Finished difference Result 17705 states and 24552 transitions. [2020-10-29 12:57:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:06,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-29 12:57:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:06,605 INFO L225 Difference]: With dead ends: 17705 [2020-10-29 12:57:06,605 INFO L226 Difference]: Without dead ends: 7698 [2020-10-29 12:57:06,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7698 states. [2020-10-29 12:57:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7698 to 7692. [2020-10-29 12:57:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7692 states. [2020-10-29 12:57:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10642 transitions. [2020-10-29 12:57:07,484 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10642 transitions. Word has length 110 [2020-10-29 12:57:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:07,484 INFO L481 AbstractCegarLoop]: Abstraction has 7692 states and 10642 transitions. [2020-10-29 12:57:07,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10642 transitions. [2020-10-29 12:57:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:57:07,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:07,488 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] [2020-10-29 12:57:07,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:57:07,489 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:07,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1016296517, now seen corresponding path program 1 times [2020-10-29 12:57:07,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:07,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023304951] [2020-10-29 12:57:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4192 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:57:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:12,157 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:12,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023304951] [2020-10-29 12:57:12,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:12,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:12,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705198492] [2020-10-29 12:57:12,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:12,205 INFO L87 Difference]: Start difference. First operand 7692 states and 10642 transitions. Second operand 5 states. [2020-10-29 12:57:12,612 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:57:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:15,740 INFO L93 Difference]: Finished difference Result 13410 states and 18545 transitions. [2020-10-29 12:57:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:15,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-29 12:57:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:15,758 INFO L225 Difference]: With dead ends: 13410 [2020-10-29 12:57:15,758 INFO L226 Difference]: Without dead ends: 7743 [2020-10-29 12:57:15,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7743 states. [2020-10-29 12:57:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7743 to 7677. [2020-10-29 12:57:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7677 states. [2020-10-29 12:57:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10548 transitions. [2020-10-29 12:57:16,731 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10548 transitions. Word has length 113 [2020-10-29 12:57:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:16,731 INFO L481 AbstractCegarLoop]: Abstraction has 7677 states and 10548 transitions. [2020-10-29 12:57:16,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10548 transitions. [2020-10-29 12:57:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 12:57:16,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:16,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:57:16,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:57:16,736 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:16,736 INFO L82 PathProgramCache]: Analyzing trace with hash 962357389, now seen corresponding path program 1 times [2020-10-29 12:57:16,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:16,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889425197] [2020-10-29 12:57:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 12:57:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:18,778 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:18,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:18,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889425197] [2020-10-29 12:57:18,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:18,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:57:18,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106395783] [2020-10-29 12:57:18,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:57:18,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:57:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:57:18,868 INFO L87 Difference]: Start difference. First operand 7677 states and 10548 transitions. Second operand 11 states. [2020-10-29 12:57:19,331 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 12:57:21,559 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:57:22,021 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 12:57:22,452 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 12:57:23,047 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:57:23,474 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 12:57:23,888 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 12:57:24,330 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 12:57:29,396 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-29 12:57:30,125 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 12:57:31,115 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 12:57:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:39,021 INFO L93 Difference]: Finished difference Result 79838 states and 119001 transitions. [2020-10-29 12:57:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 12:57:39,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-29 12:57:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:39,152 INFO L225 Difference]: With dead ends: 79838 [2020-10-29 12:57:39,153 INFO L226 Difference]: Without dead ends: 75230 [2020-10-29 12:57:39,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:57:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75230 states. [2020-10-29 12:57:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75230 to 12777. [2020-10-29 12:57:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12777 states. [2020-10-29 12:57:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 18014 transitions. [2020-10-29 12:57:42,032 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 18014 transitions. Word has length 114 [2020-10-29 12:57:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:42,032 INFO L481 AbstractCegarLoop]: Abstraction has 12777 states and 18014 transitions. [2020-10-29 12:57:42,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:57:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 18014 transitions. [2020-10-29 12:57:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 12:57:42,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:42,037 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] [2020-10-29 12:57:42,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:57:42,037 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1305081240, now seen corresponding path program 1 times [2020-10-29 12:57:42,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:42,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103781522] [2020-10-29 12:57:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:57:42,085 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:57:42,085 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:57:42,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:57:42,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:57:42 BoogieIcfgContainer [2020-10-29 12:57:42,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:57:42,132 INFO L168 Benchmark]: Toolchain (without parser) took 156867.94 ms. Allocated memory was 125.8 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 100.1 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 198.7 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:42,133 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:57:42,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.39 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 76.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:42,134 INFO L168 Benchmark]: Boogie Preprocessor took 118.46 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.3 MB in the beginning and 133.1 MB in the end (delta: -56.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:42,134 INFO L168 Benchmark]: RCFGBuilder took 1308.05 ms. Allocated memory is still 151.0 MB. Free memory was 133.1 MB in the beginning and 85.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:42,135 INFO L168 Benchmark]: TraceAbstraction took 154659.50 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 84.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 157.9 MB. Max. memory is 8.0 GB. [2020-10-29 12:57:42,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 767.39 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 76.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 118.46 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.3 MB in the beginning and 133.1 MB in the end (delta: -56.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1308.05 ms. Allocated memory is still 151.0 MB. Free memory was 133.1 MB in the beginning and 85.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 154659.50 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 84.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 157.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1131; [L70] int __return_1259; [L71] int __return_1679; [L72] int __return_1378; [L73] int __tmp_1379_0; [L74] int __return_1487; [L75] int __return_1392; [L78] int main__c1; [L79] int main__i2; [L80] main__c1 = 0 [L81] ep12 = __VERIFIER_nondet_bool() [L82] ep13 = __VERIFIER_nondet_bool() [L83] ep21 = __VERIFIER_nondet_bool() [L84] ep23 = __VERIFIER_nondet_bool() [L85] ep31 = __VERIFIER_nondet_bool() [L86] ep32 = __VERIFIER_nondet_bool() [L87] id1 = __VERIFIER_nondet_char() [L88] r1 = __VERIFIER_nondet_char() [L89] st1 = __VERIFIER_nondet_char() [L90] nl1 = __VERIFIER_nondet_char() [L91] m1 = __VERIFIER_nondet_char() [L92] max1 = __VERIFIER_nondet_char() [L93] mode1 = __VERIFIER_nondet_bool() [L94] id2 = __VERIFIER_nondet_char() [L95] r2 = __VERIFIER_nondet_char() [L96] st2 = __VERIFIER_nondet_char() [L97] nl2 = __VERIFIER_nondet_char() [L98] m2 = __VERIFIER_nondet_char() [L99] max2 = __VERIFIER_nondet_char() [L100] mode2 = __VERIFIER_nondet_bool() [L101] id3 = __VERIFIER_nondet_char() [L102] r3 = __VERIFIER_nondet_char() [L103] st3 = __VERIFIER_nondet_char() [L104] nl3 = __VERIFIER_nondet_char() [L105] m3 = __VERIFIER_nondet_char() [L106] max3 = __VERIFIER_nondet_char() [L107] mode3 = __VERIFIER_nondet_bool() [L109] _Bool init__r121; [L110] _Bool init__r131; [L111] _Bool init__r211; [L112] _Bool init__r231; [L113] _Bool init__r311; [L114] _Bool init__r321; [L115] _Bool init__r122; [L116] int init__tmp; [L117] _Bool init__r132; [L118] int init__tmp___0; [L119] _Bool init__r212; [L120] int init__tmp___1; [L121] _Bool init__r232; [L122] int init__tmp___2; [L123] _Bool init__r312; [L124] int init__tmp___3; [L125] _Bool init__r322; [L126] int init__tmp___4; [L127] int init__tmp___5; [L128] init__r121 = ep12 [L129] init__r131 = ep13 [L130] init__r211 = ep21 [L131] init__r231 = ep23 [L132] init__r311 = ep31 [L133] init__r321 = ep32 [L134] COND TRUE !(init__r121 == 0) [L136] init__tmp = 1 [L138] init__r122 = (_Bool)init__tmp [L139] COND FALSE !(!(init__r131 == 0)) [L1780] COND TRUE !(init__r121 == 0) [L1782] COND TRUE !(ep23 == 0) [L1784] init__tmp___0 = 1 [L143] init__r132 = (_Bool)init__tmp___0 [L144] COND FALSE !(!(init__r211 == 0)) [L1757] COND TRUE !(init__r231 == 0) [L1759] COND TRUE !(ep31 == 0) [L1761] init__tmp___1 = 1 [L148] init__r212 = (_Bool)init__tmp___1 [L149] COND TRUE !(init__r231 == 0) [L151] init__tmp___2 = 1 [L153] init__r232 = (_Bool)init__tmp___2 [L154] COND TRUE !(init__r311 == 0) [L156] init__tmp___3 = 1 [L158] init__r312 = (_Bool)init__tmp___3 [L159] COND FALSE !(!(init__r321 == 0)) [L1688] COND TRUE !(init__r311 == 0) [L1690] COND TRUE !(ep12 == 0) [L1692] init__tmp___4 = 1 [L163] init__r322 = (_Bool)init__tmp___4 [L164] COND TRUE ((int)id1) != ((int)id2) [L166] COND TRUE ((int)id1) != ((int)id3) [L168] COND TRUE ((int)id2) != ((int)id3) [L170] COND TRUE ((int)id1) >= 0 [L172] COND TRUE ((int)id2) >= 0 [L174] COND TRUE ((int)id3) >= 0 [L176] COND TRUE ((int)r1) == 0 [L178] COND TRUE ((int)r2) == 0 [L180] COND TRUE ((int)r3) == 0 [L182] COND TRUE !(init__r122 == 0) [L184] COND TRUE !(init__r132 == 0) [L186] COND TRUE !(init__r212 == 0) [L188] COND TRUE !(init__r232 == 0) [L190] COND TRUE !(init__r312 == 0) [L192] COND TRUE !(init__r322 == 0) [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] init__tmp___5 = 1 [L219] __return_1131 = init__tmp___5 [L220] main__i2 = __return_1131 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L236] COND TRUE main__i2 < 6 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND TRUE !(ep12 == 0) [L249] int node1____CPAchecker_TMP_0; [L250] COND TRUE max1 != nomsg [L252] COND TRUE p12_new == nomsg [L254] node1____CPAchecker_TMP_0 = max1 [L256] p12_new = node1____CPAchecker_TMP_0 [L258] COND FALSE !(!(ep13 == 0)) [L269] mode1 = 1 [L271] COND FALSE !(!(mode2 == 0)) [L277] COND TRUE ((int)r2) < 2 [L279] COND FALSE !(!(ep21 == 0)) [L290] COND TRUE !(ep23 == 0) [L292] int node2____CPAchecker_TMP_1; [L293] COND TRUE max2 != nomsg [L295] COND TRUE p23_new == nomsg [L297] node2____CPAchecker_TMP_1 = max2 [L299] p23_new = node2____CPAchecker_TMP_1 [L301] mode2 = 1 [L303] COND FALSE !(!(mode3 == 0)) [L309] COND TRUE ((int)r3) < 2 [L311] COND TRUE !(ep31 == 0) [L313] int node3____CPAchecker_TMP_0; [L314] COND TRUE max3 != nomsg [L316] COND TRUE p31_new == nomsg [L318] node3____CPAchecker_TMP_0 = max3 [L320] p31_new = node3____CPAchecker_TMP_0 [L322] COND FALSE !(!(ep32 == 0)) [L333] mode3 = 1 [L334] p12_old = p12_new [L335] p12_new = nomsg [L336] p13_old = p13_new [L337] p13_new = nomsg [L338] p21_old = p21_new [L339] p21_new = nomsg [L340] p23_old = p23_new [L341] p23_new = nomsg [L342] p31_old = p31_new [L343] p31_new = nomsg [L344] p32_old = p32_new [L345] p32_new = nomsg [L347] int check__tmp; [L348] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L350] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L352] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L354] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L356] COND FALSE !(((int)r1) >= 2) [L362] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L364] COND TRUE ((int)r1) < 2 [L366] COND FALSE !(((int)r1) >= 2) [L372] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L374] COND TRUE ((int)r1) < 2 [L376] check__tmp = 1 [L377] __return_1259 = check__tmp [L378] main__c1 = __return_1259 [L380] _Bool __tmp_1; [L381] __tmp_1 = main__c1 [L382] _Bool assert__arg; [L383] assert__arg = __tmp_1 [L384] COND FALSE !(assert__arg == 0) [L390] int main____CPAchecker_TMP_0 = main__i2; [L391] main__i2 = main__i2 + 1 [L392] COND TRUE main__i2 < 6 [L395] COND TRUE !(mode1 == 0) [L397] r1 = (char)(((int)r1) + 1) [L398] COND FALSE !(!(ep21 == 0)) [L406] COND TRUE !(ep31 == 0) [L408] m1 = p31_old [L409] p31_old = nomsg [L410] COND FALSE !(((int)m1) > ((int)max1)) [L414] COND TRUE ((int)r1) == 1 [L416] COND TRUE ((int)max1) == ((int)id1) [L418] st1 = 1 [L419] mode1 = 0 [L421] COND TRUE !(mode2 == 0) [L423] r2 = (char)(((int)r2) + 1) [L424] COND TRUE !(ep12 == 0) [L426] m2 = p12_old [L427] p12_old = nomsg [L428] COND FALSE !(((int)m2) > ((int)max2)) [L432] COND FALSE !(!(ep32 == 0)) [L440] COND FALSE !(((int)r2) == 2) [L446] mode2 = 0 [L448] COND TRUE !(mode3 == 0) [L450] r3 = (char)(((int)r3) + 1) [L451] COND FALSE !(!(ep13 == 0)) [L459] COND TRUE !(ep23 == 0) [L461] m3 = p23_old [L462] p23_old = nomsg [L463] COND TRUE ((int)m3) > ((int)max3) [L465] max3 = m3 [L467] COND FALSE !(((int)r3) == 2) [L473] mode3 = 0 [L474] p12_old = p12_new [L475] p12_new = nomsg [L476] p13_old = p13_new [L477] p13_new = nomsg [L478] p21_old = p21_new [L479] p21_new = nomsg [L480] p23_old = p23_new [L481] p23_new = nomsg [L482] p31_old = p31_new [L483] p31_new = nomsg [L484] p32_old = p32_new [L485] p32_new = nomsg [L487] int check__tmp; [L488] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L490] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L492] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L494] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L508] check__tmp = 0 [L509] __return_1679 = check__tmp [L510] main__c1 = __return_1679 [L512] _Bool __tmp_2; [L513] __tmp_2 = main__c1 [L514] _Bool assert__arg; [L515] assert__arg = __tmp_2 [L516] COND TRUE assert__arg == 0 [L518] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 250 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 154.5s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 66.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6891 SDtfs, 15703 SDslu, 8701 SDs, 0 SdLazy, 8880 SolverSat, 674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12777occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 80403 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 75.1s InterpolantComputationTime, 1687 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1558 ConstructedInterpolants, 0 QuantifiedInterpolants, 1319926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...