/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:25:47,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:25:47,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:25:47,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:25:47,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:25:47,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:25:47,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:25:47,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:25:47,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:25:47,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:25:47,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:25:47,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:25:47,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:25:47,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:25:47,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:25:47,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:25:47,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:25:47,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:25:47,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:25:48,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:25:48,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:25:48,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:25:48,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:25:48,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:25:48,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:25:48,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:25:48,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:25:48,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:25:48,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:25:48,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:25:48,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:25:48,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:25:48,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:25:48,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:25:48,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:25:48,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:25:48,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:25:48,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:25:48,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:25:48,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:25:48,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:25:48,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:25:48,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:25:48,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:25:48,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:25:48,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:25:48,099 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:25:48,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:25:48,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:25:48,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:25:48,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:25:48,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:25:48,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:25:48,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:25:48,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:25:48,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:25:48,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:25:48,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:25:48,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:25:48,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:25:48,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:25:48,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:25:48,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:25:48,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:25:48,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:25:48,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:25:48,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:25:48,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:25:48,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:25:48,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:25:48,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:25:48,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:25:48,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:25:48,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:25:48,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:25:48,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:25:48,500 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:25:48,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:25:48,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859294d0d/3b026361c8e24b74ae3940a9dbee6f68/FLAG77628b09e [2020-10-28 00:25:49,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:25:49,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:25:49,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859294d0d/3b026361c8e24b74ae3940a9dbee6f68/FLAG77628b09e [2020-10-28 00:25:49,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859294d0d/3b026361c8e24b74ae3940a9dbee6f68 [2020-10-28 00:25:49,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:25:49,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:25:49,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:25:49,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:25:49,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:25:49,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:25:49" (1/1) ... [2020-10-28 00:25:49,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171d3343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:49, skipping insertion in model container [2020-10-28 00:25:49,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:25:49" (1/1) ... [2020-10-28 00:25:49,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:25:49,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:25:50,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:25:50,084 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:25:50,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:25:50,329 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:25:50,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50 WrapperNode [2020-10-28 00:25:50,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:25:50,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:25:50,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:25:50,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:25:50,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 00:25:50,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:25:50,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:25:50,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:25:50,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:25:50,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:25:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:25:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:25:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:25:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:25:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:25:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:25:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:25:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:25:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:25:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:25:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:25:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:25:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:25:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:25:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:25:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:25:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:25:52,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:25:52,301 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:25:52,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:25:52 BoogieIcfgContainer [2020-10-28 00:25:52,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:25:52,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:25:52,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:25:52,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:25:52,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:25:49" (1/3) ... [2020-10-28 00:25:52,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a34d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:25:52, skipping insertion in model container [2020-10-28 00:25:52,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (2/3) ... [2020-10-28 00:25:52,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a34d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:25:52, skipping insertion in model container [2020-10-28 00:25:52,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:25:52" (3/3) ... [2020-10-28 00:25:52,312 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:25:52,325 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:25:52,332 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:25:52,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:25:52,376 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:25:52,376 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:25:52,376 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:25:52,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:25:52,377 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:25:52,377 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:25:52,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:25:52,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:25:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-28 00:25:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 00:25:52,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:52,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:25:52,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:52,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1599261146, now seen corresponding path program 1 times [2020-10-28 00:25:52,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:52,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623324502] [2020-10-28 00:25:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 00:25:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:25:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 00:25:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:25:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 00:25:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 00:25:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:25:58,812 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:25:58,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:58,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:58,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 00:25:58,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:25:58,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623324502] [2020-10-28 00:25:58,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:58,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:25:58,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960394099] [2020-10-28 00:25:58,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:25:58,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:25:58,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:25:58,944 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-28 00:25:59,573 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:26:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:02,288 INFO L93 Difference]: Finished difference Result 691 states and 1190 transitions. [2020-10-28 00:26:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:02,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 00:26:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:02,317 INFO L225 Difference]: With dead ends: 691 [2020-10-28 00:26:02,317 INFO L226 Difference]: Without dead ends: 557 [2020-10-28 00:26:02,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-28 00:26:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-28 00:26:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-28 00:26:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 829 transitions. [2020-10-28 00:26:02,489 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 829 transitions. Word has length 154 [2020-10-28 00:26:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:02,490 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 829 transitions. [2020-10-28 00:26:02,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 829 transitions. [2020-10-28 00:26:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 00:26:02,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:02,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:02,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:26:02,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2077220115, now seen corresponding path program 1 times [2020-10-28 00:26:02,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:02,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614389720] [2020-10-28 00:26:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:07,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:07,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:26:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 00:26:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:08,327 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:08,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:08,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:08,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 00:26:08,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:26:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:08,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614389720] [2020-10-28 00:26:08,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:08,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:08,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721333700] [2020-10-28 00:26:08,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:08,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:08,511 INFO L87 Difference]: Start difference. First operand 554 states and 829 transitions. Second operand 4 states. [2020-10-28 00:26:09,180 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:26:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:11,192 INFO L93 Difference]: Finished difference Result 1184 states and 1816 transitions. [2020-10-28 00:26:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:11,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 00:26:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:11,200 INFO L225 Difference]: With dead ends: 1184 [2020-10-28 00:26:11,200 INFO L226 Difference]: Without dead ends: 969 [2020-10-28 00:26:11,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-28 00:26:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 966. [2020-10-28 00:26:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-28 00:26:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1457 transitions. [2020-10-28 00:26:11,262 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1457 transitions. Word has length 154 [2020-10-28 00:26:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:11,263 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1457 transitions. [2020-10-28 00:26:11,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1457 transitions. [2020-10-28 00:26:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 00:26:11,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:11,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:11,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:26:11,268 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:11,269 INFO L82 PathProgramCache]: Analyzing trace with hash -238738614, now seen corresponding path program 1 times [2020-10-28 00:26:11,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:11,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726861435] [2020-10-28 00:26:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:16,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:16,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 00:26:16,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:26:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 00:26:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:26:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:26:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 00:26:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:17,163 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:17,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:17,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726861435] [2020-10-28 00:26:17,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:17,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:26:17,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007258299] [2020-10-28 00:26:17,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:26:17,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:26:17,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:17,249 INFO L87 Difference]: Start difference. First operand 966 states and 1457 transitions. Second operand 5 states. [2020-10-28 00:26:20,077 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:26:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:21,460 INFO L93 Difference]: Finished difference Result 2806 states and 4221 transitions. [2020-10-28 00:26:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:26:21,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 00:26:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:21,475 INFO L225 Difference]: With dead ends: 2806 [2020-10-28 00:26:21,475 INFO L226 Difference]: Without dead ends: 1865 [2020-10-28 00:26:21,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:26:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2020-10-28 00:26:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1862. [2020-10-28 00:26:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-10-28 00:26:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2781 transitions. [2020-10-28 00:26:21,598 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2781 transitions. Word has length 154 [2020-10-28 00:26:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:21,598 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 2781 transitions. [2020-10-28 00:26:21,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:26:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2781 transitions. [2020-10-28 00:26:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 00:26:21,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:21,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:21,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:26:21,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:21,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1650128940, now seen corresponding path program 1 times [2020-10-28 00:26:21,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:21,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825474862] [2020-10-28 00:26:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 00:26:26,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 00:26:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:27,260 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:27,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:27,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825474862] [2020-10-28 00:26:27,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:27,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:27,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78443080] [2020-10-28 00:26:27,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:27,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:27,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:27,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:27,332 INFO L87 Difference]: Start difference. First operand 1862 states and 2781 transitions. Second operand 4 states. [2020-10-28 00:26:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:29,439 INFO L93 Difference]: Finished difference Result 5432 states and 8116 transitions. [2020-10-28 00:26:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:26:29,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 00:26:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:29,460 INFO L225 Difference]: With dead ends: 5432 [2020-10-28 00:26:29,461 INFO L226 Difference]: Without dead ends: 3681 [2020-10-28 00:26:29,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-10-28 00:26:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1865. [2020-10-28 00:26:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-28 00:26:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2785 transitions. [2020-10-28 00:26:29,631 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2785 transitions. Word has length 155 [2020-10-28 00:26:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:29,631 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 2785 transitions. [2020-10-28 00:26:29,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2785 transitions. [2020-10-28 00:26:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 00:26:29,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:29,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:29,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:26:29,637 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2130328199, now seen corresponding path program 1 times [2020-10-28 00:26:29,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:29,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021084981] [2020-10-28 00:26:29,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:31,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:34,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:26:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 00:26:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:35,375 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:35,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:35,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021084981] [2020-10-28 00:26:35,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:35,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:35,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115733952] [2020-10-28 00:26:35,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:35,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:35,470 INFO L87 Difference]: Start difference. First operand 1865 states and 2785 transitions. Second operand 4 states. [2020-10-28 00:26:38,627 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:26:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:39,903 INFO L93 Difference]: Finished difference Result 4888 states and 7301 transitions. [2020-10-28 00:26:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:39,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 00:26:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:39,922 INFO L225 Difference]: With dead ends: 4888 [2020-10-28 00:26:39,922 INFO L226 Difference]: Without dead ends: 3171 [2020-10-28 00:26:39,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-10-28 00:26:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3168. [2020-10-28 00:26:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2020-10-28 00:26:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4680 transitions. [2020-10-28 00:26:40,100 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4680 transitions. Word has length 156 [2020-10-28 00:26:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:40,100 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 4680 transitions. [2020-10-28 00:26:40,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4680 transitions. [2020-10-28 00:26:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 00:26:40,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:40,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:40,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:26:40,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1108297942, now seen corresponding path program 1 times [2020-10-28 00:26:40,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:40,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116291662] [2020-10-28 00:26:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 00:26:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:45,931 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:45,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:45,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:26:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:46,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116291662] [2020-10-28 00:26:46,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:46,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:26:46,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884122641] [2020-10-28 00:26:46,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:26:46,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:26:46,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:46,010 INFO L87 Difference]: Start difference. First operand 3168 states and 4680 transitions. Second operand 5 states. [2020-10-28 00:26:48,870 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:26:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:50,297 INFO L93 Difference]: Finished difference Result 9208 states and 13571 transitions. [2020-10-28 00:26:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:26:50,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 00:26:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:50,327 INFO L225 Difference]: With dead ends: 9208 [2020-10-28 00:26:50,328 INFO L226 Difference]: Without dead ends: 6080 [2020-10-28 00:26:50,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:26:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2020-10-28 00:26:50,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6077. [2020-10-28 00:26:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2020-10-28 00:26:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 8887 transitions. [2020-10-28 00:26:50,654 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 8887 transitions. Word has length 156 [2020-10-28 00:26:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:50,654 INFO L481 AbstractCegarLoop]: Abstraction has 6077 states and 8887 transitions. [2020-10-28 00:26:50,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:26:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 8887 transitions. [2020-10-28 00:26:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 00:26:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:50,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:26:50,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:26:50,667 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:50,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2060940011, now seen corresponding path program 1 times [2020-10-28 00:26:50,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:50,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870769148] [2020-10-28 00:26:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:50,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:55,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 00:26:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:56,574 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:26:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:56,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870769148] [2020-10-28 00:26:56,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:56,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:26:56,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377829458] [2020-10-28 00:26:56,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:26:56,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:56,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:26:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:56,664 INFO L87 Difference]: Start difference. First operand 6077 states and 8887 transitions. Second operand 5 states. [2020-10-28 00:26:59,850 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:27:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:01,425 INFO L93 Difference]: Finished difference Result 17740 states and 25837 transitions. [2020-10-28 00:27:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:01,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 00:27:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:01,479 INFO L225 Difference]: With dead ends: 17740 [2020-10-28 00:27:01,479 INFO L226 Difference]: Without dead ends: 11704 [2020-10-28 00:27:01,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2020-10-28 00:27:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 11701. [2020-10-28 00:27:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11701 states. [2020-10-28 00:27:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 16878 transitions. [2020-10-28 00:27:02,257 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 16878 transitions. Word has length 156 [2020-10-28 00:27:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:02,258 INFO L481 AbstractCegarLoop]: Abstraction has 11701 states and 16878 transitions. [2020-10-28 00:27:02,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 16878 transitions. [2020-10-28 00:27:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:27:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:02,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:27:02,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:27:02,277 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash 930807153, now seen corresponding path program 1 times [2020-10-28 00:27:02,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:02,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026991124] [2020-10-28 00:27:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:27:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 00:27:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:08,010 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:08,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026991124] [2020-10-28 00:27:08,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:08,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:08,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113030269] [2020-10-28 00:27:08,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:08,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:08,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:08,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:08,059 INFO L87 Difference]: Start difference. First operand 11701 states and 16878 transitions. Second operand 4 states. [2020-10-28 00:27:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:12,214 INFO L93 Difference]: Finished difference Result 35031 states and 50526 transitions. [2020-10-28 00:27:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:27:12,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:27:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:12,260 INFO L225 Difference]: With dead ends: 35031 [2020-10-28 00:27:12,260 INFO L226 Difference]: Without dead ends: 23382 [2020-10-28 00:27:12,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23382 states. [2020-10-28 00:27:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23382 to 11704. [2020-10-28 00:27:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2020-10-28 00:27:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 16882 transitions. [2020-10-28 00:27:13,088 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 16882 transitions. Word has length 157 [2020-10-28 00:27:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:13,088 INFO L481 AbstractCegarLoop]: Abstraction has 11704 states and 16882 transitions. [2020-10-28 00:27:13,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 16882 transitions. [2020-10-28 00:27:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 00:27:13,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:13,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:27:13,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:27:13,107 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:13,108 INFO L82 PathProgramCache]: Analyzing trace with hash 791837900, now seen corresponding path program 1 times [2020-10-28 00:27:13,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:13,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589173892] [2020-10-28 00:27:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:27:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 00:27:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:16,173 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:16,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589173892] [2020-10-28 00:27:16,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:16,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:16,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613332688] [2020-10-28 00:27:16,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:16,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:16,229 INFO L87 Difference]: Start difference. First operand 11704 states and 16882 transitions. Second operand 5 states. [2020-10-28 00:27:19,551 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:27:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:21,380 INFO L93 Difference]: Finished difference Result 34227 states and 49183 transitions. [2020-10-28 00:27:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:21,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 00:27:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:21,425 INFO L225 Difference]: With dead ends: 34227 [2020-10-28 00:27:21,425 INFO L226 Difference]: Without dead ends: 22589 [2020-10-28 00:27:21,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22589 states. [2020-10-28 00:27:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22589 to 22586. [2020-10-28 00:27:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22586 states. [2020-10-28 00:27:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22586 states to 22586 states and 32140 transitions. [2020-10-28 00:27:22,937 INFO L78 Accepts]: Start accepts. Automaton has 22586 states and 32140 transitions. Word has length 158 [2020-10-28 00:27:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:22,938 INFO L481 AbstractCegarLoop]: Abstraction has 22586 states and 32140 transitions. [2020-10-28 00:27:22,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22586 states and 32140 transitions. [2020-10-28 00:27:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:27:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:22,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:27:22,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:27:22,974 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1595540175, now seen corresponding path program 1 times [2020-10-28 00:27:22,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143268327] [2020-10-28 00:27:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:27:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:27:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:24,125 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:24,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143268327] [2020-10-28 00:27:24,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:24,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:24,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071676484] [2020-10-28 00:27:24,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:24,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:24,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:24,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:24,167 INFO L87 Difference]: Start difference. First operand 22586 states and 32140 transitions. Second operand 4 states. [2020-10-28 00:27:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:29,033 INFO L93 Difference]: Finished difference Result 67227 states and 95754 transitions. [2020-10-28 00:27:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:27:29,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 00:27:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:29,108 INFO L225 Difference]: With dead ends: 67227 [2020-10-28 00:27:29,109 INFO L226 Difference]: Without dead ends: 45101 [2020-10-28 00:27:29,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45101 states. [2020-10-28 00:27:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45101 to 22592. [2020-10-28 00:27:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22592 states. [2020-10-28 00:27:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22592 states to 22592 states and 32146 transitions. [2020-10-28 00:27:31,538 INFO L78 Accepts]: Start accepts. Automaton has 22592 states and 32146 transitions. Word has length 159 [2020-10-28 00:27:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:31,538 INFO L481 AbstractCegarLoop]: Abstraction has 22592 states and 32146 transitions. [2020-10-28 00:27:31,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22592 states and 32146 transitions. [2020-10-28 00:27:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:27:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:31,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:27:31,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:27:31,568 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2127015123, now seen corresponding path program 1 times [2020-10-28 00:27:31,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:31,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796454253] [2020-10-28 00:27:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 00:27:31,613 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 00:27:31,613 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 00:27:31,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:27:31,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 12:27:31 BoogieIcfgContainer [2020-10-28 00:27:31,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 00:27:31,683 INFO L168 Benchmark]: Toolchain (without parser) took 102210.05 ms. Allocated memory was 161.5 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 143.2 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 258.0 MB. Max. memory is 8.0 GB. [2020-10-28 00:27:31,684 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 161.5 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 00:27:31,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 850.64 ms. Allocated memory is still 161.5 MB. Free memory was 142.6 MB in the beginning and 133.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-28 00:27:31,685 INFO L168 Benchmark]: Boogie Preprocessor took 125.76 ms. Allocated memory is still 161.5 MB. Free memory was 133.4 MB in the beginning and 129.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 00:27:31,686 INFO L168 Benchmark]: RCFGBuilder took 1841.16 ms. Allocated memory was 161.5 MB in the beginning and 200.3 MB in the end (delta: 38.8 MB). Free memory was 129.2 MB in the beginning and 145.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 8.0 GB. [2020-10-28 00:27:31,687 INFO L168 Benchmark]: TraceAbstraction took 99376.20 ms. Allocated memory was 200.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 145.2 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 221.7 MB. Max. memory is 8.0 GB. [2020-10-28 00:27:31,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 161.5 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 850.64 ms. Allocated memory is still 161.5 MB. Free memory was 142.6 MB in the beginning and 133.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 125.76 ms. Allocated memory is still 161.5 MB. Free memory was 133.4 MB in the beginning and 129.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1841.16 ms. Allocated memory was 161.5 MB in the beginning and 200.3 MB in the end (delta: 38.8 MB). Free memory was 129.2 MB in the beginning and 145.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 99376.20 ms. Allocated memory was 200.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 145.2 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 221.7 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] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_2426; [L78] int __return_2551; [L81] int main__c1; [L82] int main__i2; [L83] main__c1 = 0 [L84] ep12 = __VERIFIER_nondet_bool() [L85] ep13 = __VERIFIER_nondet_bool() [L86] ep21 = __VERIFIER_nondet_bool() [L87] ep23 = __VERIFIER_nondet_bool() [L88] ep31 = __VERIFIER_nondet_bool() [L89] ep32 = __VERIFIER_nondet_bool() [L90] id1 = __VERIFIER_nondet_char() [L91] r1 = __VERIFIER_nondet_uchar() [L92] st1 = __VERIFIER_nondet_char() [L93] nl1 = __VERIFIER_nondet_char() [L94] m1 = __VERIFIER_nondet_char() [L95] max1 = __VERIFIER_nondet_char() [L96] mode1 = __VERIFIER_nondet_bool() [L97] newmax1 = __VERIFIER_nondet_bool() [L98] id2 = __VERIFIER_nondet_char() [L99] r2 = __VERIFIER_nondet_uchar() [L100] st2 = __VERIFIER_nondet_char() [L101] nl2 = __VERIFIER_nondet_char() [L102] m2 = __VERIFIER_nondet_char() [L103] max2 = __VERIFIER_nondet_char() [L104] mode2 = __VERIFIER_nondet_bool() [L105] newmax2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L113] newmax3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2456] COND FALSE !(!(init__r131 == 0)) [L2472] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2433] COND FALSE !(!(init__r121 == 0)) [L2449] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2410] COND FALSE !(!(init__r231 == 0)) [L2426] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2387] COND FALSE !(!(init__r211 == 0)) [L2403] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2364] COND FALSE !(!(init__r321 == 0)) [L2380] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2341] COND FALSE !(!(init__r311 == 0)) [L2357] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] COND TRUE !(newmax1 == 0) [L214] COND TRUE !(newmax2 == 0) [L216] COND TRUE !(newmax3 == 0) [L218] init__tmp___5 = 1 [L219] __return_1873 = init__tmp___5 [L220] main__i2 = __return_1873 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L237] _Bool node1__newmax; [L238] node1__newmax = 0 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND FALSE !(!(ep12 == 0)) [L260] COND FALSE !(!(ep13 == 0)) [L273] mode1 = 1 [L275] _Bool node2__newmax; [L276] node2__newmax = 0 [L277] COND FALSE !(!(mode2 == 0)) [L283] COND TRUE ((int)r2) < 2 [L285] COND FALSE !(!(ep21 == 0)) [L298] COND FALSE !(!(ep23 == 0)) [L311] mode2 = 1 [L313] _Bool node3__newmax; [L314] node3__newmax = 0 [L315] COND FALSE !(!(mode3 == 0)) [L321] COND TRUE ((int)r3) < 2 [L323] COND FALSE !(!(ep31 == 0)) [L336] COND FALSE !(!(ep32 == 0)) [L349] mode3 = 1 [L350] p12_old = p12_new [L351] p12_new = nomsg [L352] p13_old = p13_new [L353] p13_new = nomsg [L354] p21_old = p21_new [L355] p21_new = nomsg [L356] p23_old = p23_new [L357] p23_new = nomsg [L358] p31_old = p31_new [L359] p31_new = nomsg [L360] p32_old = p32_new [L361] p32_new = nomsg [L363] int check__tmp; [L364] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L366] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L368] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L370] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L372] COND FALSE !(((int)r1) >= 2) [L378] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L380] COND TRUE ((int)r1) < 2 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] check__tmp = 1 [L393] __return_2019 = check__tmp [L394] main__c1 = __return_2019 [L396] _Bool __tmp_1; [L397] __tmp_1 = main__c1 [L398] _Bool assert__arg; [L399] assert__arg = __tmp_1 [L400] COND FALSE !(assert__arg == 0) [L407] _Bool node1__newmax; [L408] node1__newmax = 0 [L409] COND TRUE !(mode1 == 0) [L411] COND FALSE !(r1 == 255) [L417] r1 = r1 + 1 [L418] COND FALSE !(!(ep21 == 0)) [L427] COND FALSE !(!(ep31 == 0)) [L436] newmax1 = node1__newmax [L437] COND FALSE !(((int)r1) == 2) [L443] mode1 = 0 [L445] _Bool node2__newmax; [L446] node2__newmax = 0 [L447] COND TRUE !(mode2 == 0) [L449] COND FALSE !(r2 == 255) [L455] r2 = r2 + 1 [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] COND FALSE !(r3 == 255) [L493] r3 = r3 + 1 [L494] COND FALSE !(!(ep13 == 0)) [L503] COND FALSE !(!(ep23 == 0)) [L512] newmax3 = node3__newmax [L513] COND FALSE !(((int)r3) == 2) [L519] mode3 = 0 [L520] p12_old = p12_new [L521] p12_new = nomsg [L522] p13_old = p13_new [L523] p13_new = nomsg [L524] p21_old = p21_new [L525] p21_new = nomsg [L526] p23_old = p23_new [L527] p23_new = nomsg [L528] p31_old = p31_new [L529] p31_new = nomsg [L530] p32_old = p32_new [L531] p32_new = nomsg [L533] int check__tmp; [L534] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L536] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L538] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L540] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L542] COND FALSE !(((int)r1) >= 2) [L548] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L550] COND TRUE ((int)r1) < 2 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L560] COND TRUE ((int)r1) < 2 [L562] check__tmp = 1 [L563] __return_2152 = check__tmp [L564] main__c1 = __return_2152 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND FALSE !(assert__arg == 0) [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2288 = check__tmp [L734] main__c1 = __return_2288 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L747] _Bool node1__newmax; [L748] node1__newmax = 0 [L749] COND TRUE !(mode1 == 0) [L751] COND FALSE !(r1 == 255) [L757] r1 = r1 + 1 [L758] COND FALSE !(!(ep21 == 0)) [L767] COND FALSE !(!(ep31 == 0)) [L776] newmax1 = node1__newmax [L777] COND TRUE ((int)r1) == 2 [L779] COND TRUE ((int)max1) == ((int)id1) [L781] st1 = 1 [L783] mode1 = 0 [L785] _Bool node2__newmax; [L786] node2__newmax = 0 [L787] COND TRUE !(mode2 == 0) [L789] COND FALSE !(r2 == 255) [L795] r2 = r2 + 1 [L796] COND FALSE !(!(ep12 == 0)) [L805] COND FALSE !(!(ep32 == 0)) [L814] newmax2 = node2__newmax [L815] COND TRUE ((int)r2) == 2 [L817] COND TRUE ((int)max2) == ((int)id2) [L819] st2 = 1 [L821] mode2 = 0 [L823] _Bool node3__newmax; [L824] node3__newmax = 0 [L825] COND TRUE !(mode3 == 0) [L827] COND FALSE !(r3 == 255) [L833] r3 = r3 + 1 [L834] COND FALSE !(!(ep13 == 0)) [L843] COND FALSE !(!(ep23 == 0)) [L852] newmax3 = node3__newmax [L853] COND TRUE ((int)r3) == 2 [L855] COND TRUE ((int)max3) == ((int)id3) [L857] st3 = 1 [L859] mode3 = 0 [L860] p12_old = p12_new [L861] p12_new = nomsg [L862] p13_old = p13_new [L863] p13_new = nomsg [L864] p21_old = p21_new [L865] p21_new = nomsg [L866] p23_old = p23_new [L867] p23_new = nomsg [L868] p31_old = p31_new [L869] p31_new = nomsg [L870] p32_old = p32_new [L871] p32_new = nomsg [L873] int check__tmp; [L874] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1570] check__tmp = 0 [L902] __return_2426 = check__tmp [L903] main__c1 = __return_2426 [L906] _Bool __tmp_4; [L907] __tmp_4 = main__c1 [L908] _Bool assert__arg; [L909] assert__arg = __tmp_4 [L910] COND TRUE assert__arg == 0 [L912] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 351 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 99.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 40.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7187 SDtfs, 6567 SDslu, 4515 SDs, 0 SdLazy, 7630 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22592occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 36024 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 50.6s InterpolantComputationTime, 1719 NumberOfCodeBlocks, 1719 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1549 ConstructedInterpolants, 0 QuantifiedInterpolants, 1036873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...