/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:15,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:15,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:15,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:15,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:15,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:15,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:15,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:15,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:15,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:15,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:15,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:15,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:15,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:15,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:15,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:15,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:15,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:15,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:15,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:15,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:15,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:15,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:15,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:15,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:15,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:15,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:15,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:15,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:15,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:15,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:15,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:15,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:15,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:15,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:15,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:15,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:15,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:15,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:15,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:15,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:22:15,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:15,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:15,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:15,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:15,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:15,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:15,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:15,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:15,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:15,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:15,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:15,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:15,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:15,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:15,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:15,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:15,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:15,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:15,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:15,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:15,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:15,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:15,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:15,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:15,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:15,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:15,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:15,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:15,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:15,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:15,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:15,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:15,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:15,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:15,911 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:15,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:22:15,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0d753a75/ad46cd59282a48ba9d5d8bf6b1874178/FLAGd74d82527 [2020-10-27 23:22:16,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:22:16,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:22:16,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0d753a75/ad46cd59282a48ba9d5d8bf6b1874178/FLAGd74d82527 [2020-10-27 23:22:17,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0d753a75/ad46cd59282a48ba9d5d8bf6b1874178 [2020-10-27 23:22:17,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:22:17,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:22:17,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:17,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:22:17,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:22:17,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b1abf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17, skipping insertion in model container [2020-10-27 23:22:17,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:22:17,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:22:17,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:17,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:22:17,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:17,830 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:22:17,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17 WrapperNode [2020-10-27 23:22:17,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:17,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:22:17,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:22:17,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:22:17,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... [2020-10-27 23:22:17,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:22:17,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:22:17,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:22:17,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:22:17,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:22:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:22:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:22:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:22:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:22:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:22:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:22:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:22:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:22:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:22:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:22:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:22:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:22:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:22:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:22:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:22:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:22:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:22:19,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:22:19,624 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:22:19,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:19 BoogieIcfgContainer [2020-10-27 23:22:19,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:22:19,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:22:19,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:22:19,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:22:19,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:22:17" (1/3) ... [2020-10-27 23:22:19,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52496db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:19, skipping insertion in model container [2020-10-27 23:22:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:17" (2/3) ... [2020-10-27 23:22:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52496db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:19, skipping insertion in model container [2020-10-27 23:22:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:19" (3/3) ... [2020-10-27 23:22:19,636 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:22:19,649 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:22:19,654 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:22:19,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:22:19,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:22:19,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:22:19,702 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:22:19,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:22:19,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:22:19,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:22:19,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:22:19,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:22:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 23:22:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:22:19,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:19,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:22:19,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 549860383, now seen corresponding path program 1 times [2020-10-27 23:22:19,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:19,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213828344] [2020-10-27 23:22:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:25,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:25,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:22:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:22:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:22:25,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:22:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 23:22:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:22:25,845 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:25,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:25,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:25,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 23:22:25,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:22:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:22:26,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213828344] [2020-10-27 23:22:26,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:26,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864555810] [2020-10-27 23:22:26,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:26,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:26,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:26,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:26,068 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 23:22:26,519 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:22:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:28,706 INFO L93 Difference]: Finished difference Result 641 states and 1116 transitions. [2020-10-27 23:22:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:22:28,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-27 23:22:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:28,729 INFO L225 Difference]: With dead ends: 641 [2020-10-27 23:22:28,729 INFO L226 Difference]: Without dead ends: 510 [2020-10-27 23:22:28,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-27 23:22:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 507. [2020-10-27 23:22:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-27 23:22:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 756 transitions. [2020-10-27 23:22:28,860 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 756 transitions. Word has length 145 [2020-10-27 23:22:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:28,864 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 756 transitions. [2020-10-27 23:22:28,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:22:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 756 transitions. [2020-10-27 23:22:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:22:28,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:28,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:22:28,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:22:28,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1748792693, now seen corresponding path program 1 times [2020-10-27 23:22:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:28,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130881338] [2020-10-27 23:22:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:28,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:33,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:33,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:22:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:22:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 23:22:33,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:22:33,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 23:22:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:34,433 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:22:34,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:22:34,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130881338] [2020-10-27 23:22:34,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:34,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:34,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963954833] [2020-10-27 23:22:34,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:34,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:34,555 INFO L87 Difference]: Start difference. First operand 507 states and 756 transitions. Second operand 4 states. [2020-10-27 23:22:34,959 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:22:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:36,513 INFO L93 Difference]: Finished difference Result 1073 states and 1643 transitions. [2020-10-27 23:22:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:22:36,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-27 23:22:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:36,523 INFO L225 Difference]: With dead ends: 1073 [2020-10-27 23:22:36,523 INFO L226 Difference]: Without dead ends: 880 [2020-10-27 23:22:36,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-10-27 23:22:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 877. [2020-10-27 23:22:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-27 23:22:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1318 transitions. [2020-10-27 23:22:36,646 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1318 transitions. Word has length 145 [2020-10-27 23:22:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:36,648 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1318 transitions. [2020-10-27 23:22:36,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:22:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1318 transitions. [2020-10-27 23:22:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:22:36,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:36,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:22:36,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:22:36,655 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash 958508389, now seen corresponding path program 1 times [2020-10-27 23:22:36,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:36,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221526018] [2020-10-27 23:22:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:36,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:41,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:41,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:22:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:22:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:22:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:22:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:22:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:22:42,292 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:42,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:42,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:42,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:42,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:22:42,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:22:42,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221526018] [2020-10-27 23:22:42,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:42,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:22:42,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589879061] [2020-10-27 23:22:42,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:22:42,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:42,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:22:42,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:42,372 INFO L87 Difference]: Start difference. First operand 877 states and 1318 transitions. Second operand 5 states. [2020-10-27 23:22:44,845 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:22:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:45,949 INFO L93 Difference]: Finished difference Result 2551 states and 3827 transitions. [2020-10-27 23:22:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:22:45,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 23:22:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:45,972 INFO L225 Difference]: With dead ends: 2551 [2020-10-27 23:22:45,973 INFO L226 Difference]: Without dead ends: 1695 [2020-10-27 23:22:45,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:22:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-27 23:22:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1692. [2020-10-27 23:22:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-10-27 23:22:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2520 transitions. [2020-10-27 23:22:46,127 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2520 transitions. Word has length 145 [2020-10-27 23:22:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:46,129 INFO L481 AbstractCegarLoop]: Abstraction has 1692 states and 2520 transitions. [2020-10-27 23:22:46,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2520 transitions. [2020-10-27 23:22:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 23:22:46,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:46,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:22:46,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:22:46,138 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:46,139 INFO L82 PathProgramCache]: Analyzing trace with hash -106398783, now seen corresponding path program 1 times [2020-10-27 23:22:46,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:46,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804383300] [2020-10-27 23:22:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 23:22:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:22:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:22:51,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:22:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:22:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:51,570 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:22:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:22:51,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804383300] [2020-10-27 23:22:51,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:51,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:51,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66816580] [2020-10-27 23:22:51,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:51,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:51,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:51,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:51,629 INFO L87 Difference]: Start difference. First operand 1692 states and 2520 transitions. Second operand 4 states. [2020-10-27 23:22:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:54,366 INFO L93 Difference]: Finished difference Result 5035 states and 7499 transitions. [2020-10-27 23:22:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:22:54,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-27 23:22:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:54,386 INFO L225 Difference]: With dead ends: 5035 [2020-10-27 23:22:54,387 INFO L226 Difference]: Without dead ends: 3368 [2020-10-27 23:22:54,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2020-10-27 23:22:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1695. [2020-10-27 23:22:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2020-10-27 23:22:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2524 transitions. [2020-10-27 23:22:54,528 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2524 transitions. Word has length 146 [2020-10-27 23:22:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:54,529 INFO L481 AbstractCegarLoop]: Abstraction has 1695 states and 2524 transitions. [2020-10-27 23:22:54,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:22:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2524 transitions. [2020-10-27 23:22:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:22:54,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:54,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:22:54,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:22:54,534 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1972886940, now seen corresponding path program 1 times [2020-10-27 23:22:54,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:54,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335622081] [2020-10-27 23:22:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:59,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:59,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:22:59,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:22:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:22:59,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:22:59,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 23:22:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:00,042 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:00,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:23:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:00,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335622081] [2020-10-27 23:23:00,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:00,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:00,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254793933] [2020-10-27 23:23:00,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:00,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:00,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:00,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:00,183 INFO L87 Difference]: Start difference. First operand 1695 states and 2524 transitions. Second operand 5 states. [2020-10-27 23:23:02,592 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:03,776 INFO L93 Difference]: Finished difference Result 4794 states and 7142 transitions. [2020-10-27 23:23:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:03,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 23:23:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:03,795 INFO L225 Difference]: With dead ends: 4794 [2020-10-27 23:23:03,795 INFO L226 Difference]: Without dead ends: 3269 [2020-10-27 23:23:03,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-10-27 23:23:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3266. [2020-10-27 23:23:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3266 states. [2020-10-27 23:23:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4814 transitions. [2020-10-27 23:23:04,039 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 4814 transitions. Word has length 147 [2020-10-27 23:23:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:04,039 INFO L481 AbstractCegarLoop]: Abstraction has 3266 states and 4814 transitions. [2020-10-27 23:23:04,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 4814 transitions. [2020-10-27 23:23:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 23:23:04,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:04,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:04,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:04,046 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1847308702, now seen corresponding path program 1 times [2020-10-27 23:23:04,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:04,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199750968] [2020-10-27 23:23:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:23:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:09,442 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:09,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199750968] [2020-10-27 23:23:09,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:09,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:09,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065299121] [2020-10-27 23:23:09,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:09,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:09,501 INFO L87 Difference]: Start difference. First operand 3266 states and 4814 transitions. Second operand 4 states. [2020-10-27 23:23:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:12,286 INFO L93 Difference]: Finished difference Result 9602 states and 14142 transitions. [2020-10-27 23:23:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:23:12,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-27 23:23:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:12,318 INFO L225 Difference]: With dead ends: 9602 [2020-10-27 23:23:12,318 INFO L226 Difference]: Without dead ends: 6464 [2020-10-27 23:23:12,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2020-10-27 23:23:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 3275. [2020-10-27 23:23:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-27 23:23:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4826 transitions. [2020-10-27 23:23:12,611 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4826 transitions. Word has length 148 [2020-10-27 23:23:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:12,611 INFO L481 AbstractCegarLoop]: Abstraction has 3275 states and 4826 transitions. [2020-10-27 23:23:12,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4826 transitions. [2020-10-27 23:23:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 23:23:12,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:12,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:12,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:23:12,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash -766156253, now seen corresponding path program 1 times [2020-10-27 23:23:12,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:12,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050366651] [2020-10-27 23:23:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 23:23:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:15,506 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:15,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:15,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050366651] [2020-10-27 23:23:15,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:15,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:15,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289361670] [2020-10-27 23:23:15,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:15,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:15,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:15,604 INFO L87 Difference]: Start difference. First operand 3275 states and 4826 transitions. Second operand 5 states. [2020-10-27 23:23:17,815 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:18,907 INFO L93 Difference]: Finished difference Result 9550 states and 14035 transitions. [2020-10-27 23:23:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:18,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 23:23:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:18,933 INFO L225 Difference]: With dead ends: 9550 [2020-10-27 23:23:18,934 INFO L226 Difference]: Without dead ends: 6323 [2020-10-27 23:23:18,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2020-10-27 23:23:19,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6320. [2020-10-27 23:23:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6320 states. [2020-10-27 23:23:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6320 states to 6320 states and 9207 transitions. [2020-10-27 23:23:19,550 INFO L78 Accepts]: Start accepts. Automaton has 6320 states and 9207 transitions. Word has length 149 [2020-10-27 23:23:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:19,551 INFO L481 AbstractCegarLoop]: Abstraction has 6320 states and 9207 transitions. [2020-10-27 23:23:19,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6320 states and 9207 transitions. [2020-10-27 23:23:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 23:23:19,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:19,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:19,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:23:19,562 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1510108096, now seen corresponding path program 1 times [2020-10-27 23:23:19,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:19,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213026141] [2020-10-27 23:23:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:20,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 23:23:20,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-27 23:23:20,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:23:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:23:20,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:20,747 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:20,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:20,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:20,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213026141] [2020-10-27 23:23:20,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:20,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:20,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210979908] [2020-10-27 23:23:20,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:20,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:20,804 INFO L87 Difference]: Start difference. First operand 6320 states and 9207 transitions. Second operand 4 states. [2020-10-27 23:23:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:23,198 INFO L93 Difference]: Finished difference Result 18748 states and 27325 transitions. [2020-10-27 23:23:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:23:23,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-27 23:23:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:23,238 INFO L225 Difference]: With dead ends: 18748 [2020-10-27 23:23:23,239 INFO L226 Difference]: Without dead ends: 12587 [2020-10-27 23:23:23,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12587 states. [2020-10-27 23:23:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12587 to 6326. [2020-10-27 23:23:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6326 states. [2020-10-27 23:23:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 9213 transitions. [2020-10-27 23:23:23,764 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 9213 transitions. Word has length 150 [2020-10-27 23:23:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:23,764 INFO L481 AbstractCegarLoop]: Abstraction has 6326 states and 9213 transitions. [2020-10-27 23:23:23,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 9213 transitions. [2020-10-27 23:23:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 23:23:23,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:23,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:23,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:23:23,775 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:23,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1495292190, now seen corresponding path program 1 times [2020-10-27 23:23:23,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:23,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511468298] [2020-10-27 23:23:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 23:23:23,822 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 23:23:23,822 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 23:23:23,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:23:23,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 11:23:23 BoogieIcfgContainer [2020-10-27 23:23:23,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 23:23:23,878 INFO L168 Benchmark]: Toolchain (without parser) took 66816.70 ms. Allocated memory was 156.2 MB in the beginning and 987.8 MB in the end (delta: 831.5 MB). Free memory was 130.2 MB in the beginning and 536.5 MB in the end (delta: -406.3 MB). Peak memory consumption was 426.7 MB. Max. memory is 8.0 GB. [2020-10-27 23:23:23,879 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 23:23:23,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.83 ms. Allocated memory is still 156.2 MB. Free memory was 129.7 MB in the beginning and 135.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. [2020-10-27 23:23:23,880 INFO L168 Benchmark]: Boogie Preprocessor took 120.56 ms. Allocated memory is still 156.2 MB. Free memory was 135.7 MB in the beginning and 131.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 23:23:23,881 INFO L168 Benchmark]: RCFGBuilder took 1673.55 ms. Allocated memory is still 156.2 MB. Free memory was 131.6 MB in the beginning and 91.9 MB in the end (delta: 39.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-10-27 23:23:23,882 INFO L168 Benchmark]: TraceAbstraction took 64248.13 ms. Allocated memory was 156.2 MB in the beginning and 987.8 MB in the end (delta: 831.5 MB). Free memory was 91.4 MB in the beginning and 536.5 MB in the end (delta: -445.1 MB). Peak memory consumption was 386.9 MB. Max. memory is 8.0 GB. [2020-10-27 23:23:23,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 762.83 ms. Allocated memory is still 156.2 MB. Free memory was 129.7 MB in the beginning and 135.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.56 ms. Allocated memory is still 156.2 MB. Free memory was 135.7 MB in the beginning and 131.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1673.55 ms. Allocated memory is still 156.2 MB. Free memory was 131.6 MB in the beginning and 91.9 MB in the end (delta: 39.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 64248.13 ms. Allocated memory was 156.2 MB in the beginning and 987.8 MB in the end (delta: 831.5 MB). Free memory was 91.4 MB in the beginning and 536.5 MB in the end (delta: -445.1 MB). Peak memory consumption was 386.9 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; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1718; [L71] int __return_1846; [L72] int __return_1964; [L73] int __return_2082; [L74] int __return_2205; [L75] int __return_2315; [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_uchar() [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_uchar() [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_uchar() [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 FALSE !(!(init__r121 == 0)) [L2246] COND FALSE !(!(init__r131 == 0)) [L2262] init__tmp = 0 [L138] init__r122 = (_Bool)init__tmp [L139] COND FALSE !(!(init__r131 == 0)) [L2223] COND FALSE !(!(init__r121 == 0)) [L2239] init__tmp___0 = 0 [L143] init__r132 = (_Bool)init__tmp___0 [L144] COND FALSE !(!(init__r211 == 0)) [L2200] COND FALSE !(!(init__r231 == 0)) [L2216] init__tmp___1 = 0 [L148] init__r212 = (_Bool)init__tmp___1 [L149] COND FALSE !(!(init__r231 == 0)) [L2177] COND FALSE !(!(init__r211 == 0)) [L2193] init__tmp___2 = 0 [L153] init__r232 = (_Bool)init__tmp___2 [L154] COND FALSE !(!(init__r311 == 0)) [L2154] COND FALSE !(!(init__r321 == 0)) [L2170] init__tmp___3 = 0 [L158] init__r312 = (_Bool)init__tmp___3 [L159] COND FALSE !(!(init__r321 == 0)) [L2131] COND FALSE !(!(init__r311 == 0)) [L2147] init__tmp___4 = 0 [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 ((int)max1) == ((int)id1) [L184] COND TRUE ((int)max2) == ((int)id2) [L186] COND TRUE ((int)max3) == ((int)id3) [L188] COND TRUE ((int)st1) == 0 [L190] COND TRUE ((int)st2) == 0 [L192] COND TRUE ((int)st3) == 0 [L194] COND TRUE ((int)nl1) == 0 [L196] COND TRUE ((int)nl2) == 0 [L198] COND TRUE ((int)nl3) == 0 [L200] COND TRUE ((int)mode1) == 0 [L202] COND TRUE ((int)mode2) == 0 [L204] COND TRUE ((int)mode3) == 0 [L206] init__tmp___5 = 1 [L207] __return_1718 = init__tmp___5 [L208] main__i2 = __return_1718 [L209] COND TRUE main__i2 != 0 [L211] p12_old = nomsg [L212] p12_new = nomsg [L213] p13_old = nomsg [L214] p13_new = nomsg [L215] p21_old = nomsg [L216] p21_new = nomsg [L217] p23_old = nomsg [L218] p23_new = nomsg [L219] p31_old = nomsg [L220] p31_new = nomsg [L221] p32_old = nomsg [L222] p32_new = nomsg [L223] main__i2 = 0 [L225] COND FALSE !(!(mode1 == 0)) [L231] COND TRUE ((int)r1) < 2 [L233] COND FALSE !(!(ep12 == 0)) [L244] COND FALSE !(!(ep13 == 0)) [L255] mode1 = 1 [L257] COND FALSE !(!(mode2 == 0)) [L263] COND TRUE ((int)r2) < 2 [L265] COND FALSE !(!(ep21 == 0)) [L276] COND FALSE !(!(ep23 == 0)) [L287] mode2 = 1 [L289] COND FALSE !(!(mode3 == 0)) [L295] COND TRUE ((int)r3) < 2 [L297] COND FALSE !(!(ep31 == 0)) [L308] COND FALSE !(!(ep32 == 0)) [L319] mode3 = 1 [L320] p12_old = p12_new [L321] p12_new = nomsg [L322] p13_old = p13_new [L323] p13_new = nomsg [L324] p21_old = p21_new [L325] p21_new = nomsg [L326] p23_old = p23_new [L327] p23_new = nomsg [L328] p31_old = p31_new [L329] p31_new = nomsg [L330] p32_old = p32_new [L331] p32_new = nomsg [L333] int check__tmp; [L334] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L336] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L338] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L340] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L342] COND FALSE !(((int)r1) >= 2) [L348] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L350] COND TRUE ((int)r1) < 2 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] check__tmp = 1 [L363] __return_1846 = check__tmp [L364] main__c1 = __return_1846 [L366] _Bool __tmp_1; [L367] __tmp_1 = main__c1 [L368] _Bool assert__arg; [L369] assert__arg = __tmp_1 [L370] COND FALSE !(assert__arg == 0) [L377] COND TRUE !(mode1 == 0) [L379] COND FALSE !(r1 == 255) [L385] r1 = r1 + 1 [L386] COND FALSE !(!(ep21 == 0)) [L394] COND FALSE !(!(ep31 == 0)) [L402] COND FALSE !(((int)r1) == 2) [L408] mode1 = 0 [L410] COND TRUE !(mode2 == 0) [L412] COND FALSE !(r2 == 255) [L418] r2 = r2 + 1 [L419] COND FALSE !(!(ep12 == 0)) [L427] COND FALSE !(!(ep32 == 0)) [L435] COND FALSE !(((int)r2) == 2) [L441] mode2 = 0 [L443] COND TRUE !(mode3 == 0) [L445] COND FALSE !(r3 == 255) [L451] r3 = r3 + 1 [L452] COND FALSE !(!(ep13 == 0)) [L460] COND FALSE !(!(ep23 == 0)) [L468] COND FALSE !(((int)r3) == 2) [L474] mode3 = 0 [L475] p12_old = p12_new [L476] p12_new = nomsg [L477] p13_old = p13_new [L478] p13_new = nomsg [L479] p21_old = p21_new [L480] p21_new = nomsg [L481] p23_old = p23_new [L482] p23_new = nomsg [L483] p31_old = p31_new [L484] p31_new = nomsg [L485] p32_old = p32_new [L486] p32_new = nomsg [L488] int check__tmp; [L489] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L491] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L493] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L495] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L497] COND FALSE !(((int)r1) >= 2) [L503] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L505] COND TRUE ((int)r1) < 2 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L515] COND TRUE ((int)r1) < 2 [L517] check__tmp = 1 [L518] __return_1964 = check__tmp [L519] main__c1 = __return_1964 [L521] _Bool __tmp_2; [L522] __tmp_2 = main__c1 [L523] _Bool assert__arg; [L524] assert__arg = __tmp_2 [L525] COND FALSE !(assert__arg == 0) [L532] COND FALSE !(!(mode1 == 0)) [L538] COND TRUE ((int)r1) < 2 [L540] COND FALSE !(!(ep12 == 0)) [L551] COND FALSE !(!(ep13 == 0)) [L562] mode1 = 1 [L564] COND FALSE !(!(mode2 == 0)) [L570] COND TRUE ((int)r2) < 2 [L572] COND FALSE !(!(ep21 == 0)) [L583] COND FALSE !(!(ep23 == 0)) [L594] mode2 = 1 [L596] COND FALSE !(!(mode3 == 0)) [L602] COND TRUE ((int)r3) < 2 [L604] COND FALSE !(!(ep31 == 0)) [L615] COND FALSE !(!(ep32 == 0)) [L626] mode3 = 1 [L627] p12_old = p12_new [L628] p12_new = nomsg [L629] p13_old = p13_new [L630] p13_new = nomsg [L631] p21_old = p21_new [L632] p21_new = nomsg [L633] p23_old = p23_new [L634] p23_new = nomsg [L635] p31_old = p31_new [L636] p31_new = nomsg [L637] p32_old = p32_new [L638] p32_new = nomsg [L640] int check__tmp; [L641] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L643] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L645] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L647] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L649] COND FALSE !(((int)r1) >= 2) [L655] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L657] COND TRUE ((int)r1) < 2 [L659] COND FALSE !(((int)r1) >= 2) [L665] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L667] COND TRUE ((int)r1) < 2 [L669] check__tmp = 1 [L670] __return_2082 = check__tmp [L671] main__c1 = __return_2082 [L673] _Bool __tmp_3; [L674] __tmp_3 = main__c1 [L675] _Bool assert__arg; [L676] assert__arg = __tmp_3 [L677] COND FALSE !(assert__arg == 0) [L684] COND TRUE !(mode1 == 0) [L686] COND FALSE !(r1 == 255) [L692] r1 = r1 + 1 [L693] COND FALSE !(!(ep21 == 0)) [L701] COND FALSE !(!(ep31 == 0)) [L709] COND TRUE ((int)r1) == 2 [L711] COND TRUE ((int)max1) == ((int)id1) [L713] st1 = 1 [L715] mode1 = 0 [L717] COND TRUE !(mode2 == 0) [L719] COND FALSE !(r2 == 255) [L725] r2 = r2 + 1 [L726] COND FALSE !(!(ep12 == 0)) [L734] COND FALSE !(!(ep32 == 0)) [L742] COND TRUE ((int)r2) == 2 [L744] COND TRUE ((int)max2) == ((int)id2) [L746] st2 = 1 [L748] mode2 = 0 [L750] COND TRUE !(mode3 == 0) [L752] COND FALSE !(r3 == 255) [L758] r3 = r3 + 1 [L759] COND FALSE !(!(ep13 == 0)) [L767] COND FALSE !(!(ep23 == 0)) [L775] COND TRUE ((int)r3) == 2 [L777] COND TRUE ((int)max3) == ((int)id3) [L779] st3 = 1 [L781] mode3 = 0 [L782] p12_old = p12_new [L783] p12_new = nomsg [L784] p13_old = p13_new [L785] p13_new = nomsg [L786] p21_old = p21_new [L787] p21_new = nomsg [L788] p23_old = p23_new [L789] p23_new = nomsg [L790] p31_old = p31_new [L791] p31_new = nomsg [L792] p32_old = p32_new [L793] p32_new = nomsg [L795] int check__tmp; [L796] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1435] check__tmp = 0 [L824] __return_2205 = check__tmp [L825] main__c1 = __return_2205 [L828] _Bool __tmp_4; [L829] __tmp_4 = main__c1 [L830] _Bool assert__arg; [L831] assert__arg = __tmp_4 [L832] COND TRUE assert__arg == 0 [L834] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 319 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 64.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5332 SDtfs, 4472 SDslu, 3268 SDs, 0 SdLazy, 5708 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6326occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 11138 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 1326 NumberOfCodeBlocks, 1326 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1167 ConstructedInterpolants, 0 QuantifiedInterpolants, 788256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...