/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:55:06,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:55:06,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:55:06,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:55:06,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:55:06,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:55:06,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:55:06,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:55:06,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:55:06,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:55:06,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:55:06,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:55:06,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:55:06,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:55:06,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:55:06,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:55:06,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:55:06,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:55:06,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:55:06,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:55:06,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:55:06,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:55:06,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:55:06,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:55:06,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:55:06,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:55:06,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:55:06,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:55:06,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:55:06,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:55:06,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:55:06,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:55:06,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:55:06,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:55:06,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:55:06,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:55:06,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:55:06,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:55:06,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:55:06,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:55:06,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:55:06,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:55:06,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:55:06,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:55:06,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:55:06,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:55:06,349 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:55:06,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:55:06,350 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:55:06,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:55:06,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:55:06,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:55:06,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:55:06,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:55:06,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:55:06,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:55:06,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:55:06,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:55:06,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:55:06,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:55:06,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:55:06,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:55:06,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:55:06,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:55:06,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:55:06,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:55:06,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:55:06,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:55:06,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:55:06,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:55:06,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:55:06,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:55:06,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:55:06,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:55:06,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:55:06,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:55:06,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:55:06,824 INFO L432 ainManager$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.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:55:06,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3958dda98/43e42d7e199240d5a4426ab22b8804f6/FLAG61543ddeb [2020-10-27 05:55:07,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:55:07,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:55:07,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3958dda98/43e42d7e199240d5a4426ab22b8804f6/FLAG61543ddeb [2020-10-27 05:55:07,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3958dda98/43e42d7e199240d5a4426ab22b8804f6 [2020-10-27 05:55:07,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:55:07,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:55:07,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:55:07,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:55:07,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:55:07,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:55:07" (1/1) ... [2020-10-27 05:55:07,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3700ee28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:07, skipping insertion in model container [2020-10-27 05:55:07,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:55:07" (1/1) ... [2020-10-27 05:55:07,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:55:08,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:55:08,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:55:08,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:55:08,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:55:08,709 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:55:08,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08 WrapperNode [2020-10-27 05:55:08,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:55:08,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:55:08,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:55:08,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:55:08,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... [2020-10-27 05:55:08,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:55:08,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:55:08,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:55:08,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:55:08,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:55:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:55:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:55:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:55:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:55:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:55:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:55:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:55:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:55:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:55:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:55:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:55:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:55:10,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:55:10,588 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:55:10,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:55:10 BoogieIcfgContainer [2020-10-27 05:55:10,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:55:10,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:55:10,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:55:10,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:55:10,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:55:07" (1/3) ... [2020-10-27 05:55:10,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e48cd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:55:10, skipping insertion in model container [2020-10-27 05:55:10,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:08" (2/3) ... [2020-10-27 05:55:10,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e48cd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:55:10, skipping insertion in model container [2020-10-27 05:55:10,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:55:10" (3/3) ... [2020-10-27 05:55:10,600 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:55:10,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:55:10,618 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:55:10,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:55:10,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:55:10,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:55:10,662 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:55:10,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:55:10,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:55:10,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:55:10,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:55:10,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:55:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-27 05:55:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 05:55:10,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:10,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:55:10,706 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:10,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1997048065, now seen corresponding path program 1 times [2020-10-27 05:55:10,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:10,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770392813] [2020-10-27 05:55:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:16,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:16,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 05:55:16,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:55:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 05:55:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:55:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:55:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 05:55:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:55:16,779 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:55:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:55:16,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:55:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:55:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:16,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770392813] [2020-10-27 05:55:16,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:16,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:55:16,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213788475] [2020-10-27 05:55:16,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:55:16,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:55:16,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:55:16,934 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 5 states. [2020-10-27 05:55:20,216 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:55:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:21,308 INFO L93 Difference]: Finished difference Result 957 states and 1678 transitions. [2020-10-27 05:55:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:55:21,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 05:55:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:21,336 INFO L225 Difference]: With dead ends: 957 [2020-10-27 05:55:21,336 INFO L226 Difference]: Without dead ends: 630 [2020-10-27 05:55:21,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:55:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-27 05:55:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 627. [2020-10-27 05:55:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-27 05:55:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 916 transitions. [2020-10-27 05:55:21,471 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 916 transitions. Word has length 152 [2020-10-27 05:55:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:21,472 INFO L481 AbstractCegarLoop]: Abstraction has 627 states and 916 transitions. [2020-10-27 05:55:21,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:55:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 916 transitions. [2020-10-27 05:55:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 05:55:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:21,487 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] [2020-10-27 05:55:21,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:55:21,491 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:21,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1311864278, now seen corresponding path program 1 times [2020-10-27 05:55:21,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:21,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723965746] [2020-10-27 05:55:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:26,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 05:55:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:55:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:55:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:55:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:55:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:55:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:55:27,052 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:55:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:27,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:27,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:55:27,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:55:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:55:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:27,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723965746] [2020-10-27 05:55:27,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:27,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:55:27,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474165429] [2020-10-27 05:55:27,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:55:27,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:27,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:55:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:55:27,167 INFO L87 Difference]: Start difference. First operand 627 states and 916 transitions. Second operand 5 states. [2020-10-27 05:55:29,330 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:55:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:30,367 INFO L93 Difference]: Finished difference Result 1791 states and 2604 transitions. [2020-10-27 05:55:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:55:30,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 05:55:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:30,379 INFO L225 Difference]: With dead ends: 1791 [2020-10-27 05:55:30,379 INFO L226 Difference]: Without dead ends: 1192 [2020-10-27 05:55:30,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:55:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-27 05:55:30,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1189. [2020-10-27 05:55:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-10-27 05:55:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1713 transitions. [2020-10-27 05:55:30,495 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1713 transitions. Word has length 153 [2020-10-27 05:55:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:30,496 INFO L481 AbstractCegarLoop]: Abstraction has 1189 states and 1713 transitions. [2020-10-27 05:55:30,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:55:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1713 transitions. [2020-10-27 05:55:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 05:55:30,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:30,505 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] [2020-10-27 05:55:30,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:55:30,506 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash -184056733, now seen corresponding path program 1 times [2020-10-27 05:55:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850314560] [2020-10-27 05:55:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:35,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:35,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 05:55:35,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:55:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:55:35,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:55:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:55:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:55:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:36,187 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:55:36,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:55:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:55:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:55:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:36,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850314560] [2020-10-27 05:55:36,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:36,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:55:36,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745609057] [2020-10-27 05:55:36,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:55:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:55:36,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:55:36,280 INFO L87 Difference]: Start difference. First operand 1189 states and 1713 transitions. Second operand 5 states. [2020-10-27 05:55:38,911 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:55:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:39,999 INFO L93 Difference]: Finished difference Result 3473 states and 4988 transitions. [2020-10-27 05:55:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:55:40,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 05:55:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:40,015 INFO L225 Difference]: With dead ends: 3473 [2020-10-27 05:55:40,015 INFO L226 Difference]: Without dead ends: 2295 [2020-10-27 05:55:40,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:55:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-27 05:55:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2292. [2020-10-27 05:55:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-10-27 05:55:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3261 transitions. [2020-10-27 05:55:40,158 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3261 transitions. Word has length 154 [2020-10-27 05:55:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:40,159 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3261 transitions. [2020-10-27 05:55:40,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:55:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3261 transitions. [2020-10-27 05:55:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 05:55:40,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:40,169 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] [2020-10-27 05:55:40,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:55:40,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash -577827273, now seen corresponding path program 1 times [2020-10-27 05:55:40,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:40,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534724953] [2020-10-27 05:55:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:45,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 05:55:45,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:55:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:55:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:55:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:55:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 05:55:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:45,852 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:55:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:55:45,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:55:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:55:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:45,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534724953] [2020-10-27 05:55:45,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:45,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:55:45,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401925370] [2020-10-27 05:55:45,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:55:45,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:45,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:55:45,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:55:45,973 INFO L87 Difference]: Start difference. First operand 2292 states and 3261 transitions. Second operand 5 states. [2020-10-27 05:55:48,469 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:55:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:49,673 INFO L93 Difference]: Finished difference Result 6188 states and 8837 transitions. [2020-10-27 05:55:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:55:49,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 05:55:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:49,697 INFO L225 Difference]: With dead ends: 6188 [2020-10-27 05:55:49,697 INFO L226 Difference]: Without dead ends: 4401 [2020-10-27 05:55:49,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:55:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2020-10-27 05:55:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4398. [2020-10-27 05:55:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4398 states. [2020-10-27 05:55:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6177 transitions. [2020-10-27 05:55:50,005 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6177 transitions. Word has length 155 [2020-10-27 05:55:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:50,006 INFO L481 AbstractCegarLoop]: Abstraction has 4398 states and 6177 transitions. [2020-10-27 05:55:50,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:55:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6177 transitions. [2020-10-27 05:55:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 05:55:50,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:50,016 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] [2020-10-27 05:55:50,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:55:50,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash -798396797, now seen corresponding path program 1 times [2020-10-27 05:55:50,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:50,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277148317] [2020-10-27 05:55:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:51,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:55,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 05:55:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:55:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:55:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:55:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:55:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:55:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:55:55,545 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:55:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:55:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:55,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:55:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:55:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:55:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:55:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:55:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:55:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:55:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:55:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:55:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:55:55,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277148317] [2020-10-27 05:55:55,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:55:55,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:55:55,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812864513] [2020-10-27 05:55:55,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:55:55,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:55:55,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:55:55,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:55:55,657 INFO L87 Difference]: Start difference. First operand 4398 states and 6177 transitions. Second operand 5 states. [2020-10-27 05:55:57,999 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:55:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:55:59,158 INFO L93 Difference]: Finished difference Result 12685 states and 17712 transitions. [2020-10-27 05:55:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:55:59,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 05:55:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:55:59,199 INFO L225 Difference]: With dead ends: 12685 [2020-10-27 05:55:59,199 INFO L226 Difference]: Without dead ends: 8414 [2020-10-27 05:55:59,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:55:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8414 states. [2020-10-27 05:55:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8414 to 8411. [2020-10-27 05:55:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8411 states. [2020-10-27 05:55:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 11612 transitions. [2020-10-27 05:55:59,689 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 11612 transitions. Word has length 156 [2020-10-27 05:55:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:55:59,689 INFO L481 AbstractCegarLoop]: Abstraction has 8411 states and 11612 transitions. [2020-10-27 05:55:59,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:55:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 11612 transitions. [2020-10-27 05:55:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 05:55:59,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:59,704 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] [2020-10-27 05:55:59,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:55:59,705 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash -15784937, now seen corresponding path program 1 times [2020-10-27 05:55:59,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:59,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816048606] [2020-10-27 05:55:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 05:56:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 05:56:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:05,315 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:05,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:56:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:56:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:05,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816048606] [2020-10-27 05:56:05,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:05,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:05,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775122276] [2020-10-27 05:56:05,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:05,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:05,521 INFO L87 Difference]: Start difference. First operand 8411 states and 11612 transitions. Second operand 5 states. [2020-10-27 05:56:08,241 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:56:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:09,523 INFO L93 Difference]: Finished difference Result 24271 states and 33398 transitions. [2020-10-27 05:56:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:09,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 05:56:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:09,581 INFO L225 Difference]: With dead ends: 24271 [2020-10-27 05:56:09,582 INFO L226 Difference]: Without dead ends: 16183 [2020-10-27 05:56:09,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16183 states. [2020-10-27 05:56:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16183 to 16180. [2020-10-27 05:56:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16180 states. [2020-10-27 05:56:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16180 states to 16180 states and 21977 transitions. [2020-10-27 05:56:10,460 INFO L78 Accepts]: Start accepts. Automaton has 16180 states and 21977 transitions. Word has length 157 [2020-10-27 05:56:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:10,460 INFO L481 AbstractCegarLoop]: Abstraction has 16180 states and 21977 transitions. [2020-10-27 05:56:10,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 16180 states and 21977 transitions. [2020-10-27 05:56:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 05:56:10,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:10,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:10,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:56:10,489 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash 171530980, now seen corresponding path program 1 times [2020-10-27 05:56:10,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:10,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702474519] [2020-10-27 05:56:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:14,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 05:56:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:14,726 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:14,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:56:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:14,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702474519] [2020-10-27 05:56:14,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:14,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:56:14,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632757825] [2020-10-27 05:56:14,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:56:14,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:56:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:56:14,803 INFO L87 Difference]: Start difference. First operand 16180 states and 21977 transitions. Second operand 4 states. [2020-10-27 05:56:15,178 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:56:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:17,647 INFO L93 Difference]: Finished difference Result 31114 states and 44077 transitions. [2020-10-27 05:56:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:56:17,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-27 05:56:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:17,700 INFO L225 Difference]: With dead ends: 31114 [2020-10-27 05:56:17,700 INFO L226 Difference]: Without dead ends: 24775 [2020-10-27 05:56:17,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24775 states. [2020-10-27 05:56:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24775 to 24772. [2020-10-27 05:56:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24772 states. [2020-10-27 05:56:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24772 states to 24772 states and 34089 transitions. [2020-10-27 05:56:18,956 INFO L78 Accepts]: Start accepts. Automaton has 24772 states and 34089 transitions. Word has length 158 [2020-10-27 05:56:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:18,956 INFO L481 AbstractCegarLoop]: Abstraction has 24772 states and 34089 transitions. [2020-10-27 05:56:18,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:56:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 24772 states and 34089 transitions. [2020-10-27 05:56:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 05:56:18,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:18,993 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] [2020-10-27 05:56:18,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:56:18,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash 854716892, now seen corresponding path program 1 times [2020-10-27 05:56:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:18,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298581234] [2020-10-27 05:56:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 05:56:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:56:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:19,615 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:19,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298581234] [2020-10-27 05:56:19,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:19,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:56:19,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174721225] [2020-10-27 05:56:19,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:56:19,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:56:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:56:19,685 INFO L87 Difference]: Start difference. First operand 24772 states and 34089 transitions. Second operand 4 states. [2020-10-27 05:56:20,097 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:56:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:23,202 INFO L93 Difference]: Finished difference Result 48342 states and 69113 transitions. [2020-10-27 05:56:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:56:23,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-27 05:56:23,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:23,261 INFO L225 Difference]: With dead ends: 48342 [2020-10-27 05:56:23,261 INFO L226 Difference]: Without dead ends: 38947 [2020-10-27 05:56:23,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38947 states. [2020-10-27 05:56:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38947 to 38944. [2020-10-27 05:56:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38944 states. [2020-10-27 05:56:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38944 states to 38944 states and 54037 transitions. [2020-10-27 05:56:25,385 INFO L78 Accepts]: Start accepts. Automaton has 38944 states and 54037 transitions. Word has length 158 [2020-10-27 05:56:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:25,386 INFO L481 AbstractCegarLoop]: Abstraction has 38944 states and 54037 transitions. [2020-10-27 05:56:25,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:56:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 38944 states and 54037 transitions. [2020-10-27 05:56:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 05:56:25,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:25,423 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] [2020-10-27 05:56:25,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:56:25,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:25,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2038764280, now seen corresponding path program 1 times [2020-10-27 05:56:25,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:25,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770570493] [2020-10-27 05:56:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 05:56:25,491 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 05:56:25,491 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 05:56:25,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:56:25,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:56:25 BoogieIcfgContainer [2020-10-27 05:56:25,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 05:56:25,590 INFO L168 Benchmark]: Toolchain (without parser) took 77677.93 ms. Allocated memory was 152.0 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 125.9 MB in the beginning and 910.5 MB in the end (delta: -784.7 MB). Peak memory consumption was 898.1 MB. Max. memory is 8.0 GB. [2020-10-27 05:56:25,591 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 05:56:25,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.04 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 130.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. [2020-10-27 05:56:25,592 INFO L168 Benchmark]: Boogie Preprocessor took 139.52 ms. Allocated memory is still 152.0 MB. Free memory was 130.0 MB in the beginning and 125.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 05:56:25,597 INFO L168 Benchmark]: RCFGBuilder took 1739.75 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 72.0 MB in the end (delta: 53.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2020-10-27 05:56:25,599 INFO L168 Benchmark]: TraceAbstraction took 74994.99 ms. Allocated memory was 152.0 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 72.0 MB in the beginning and 910.5 MB in the end (delta: -838.5 MB). Peak memory consumption was 843.4 MB. Max. memory is 8.0 GB. [2020-10-27 05:56:25,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 789.04 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 130.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.52 ms. Allocated memory is still 152.0 MB. Free memory was 130.0 MB in the beginning and 125.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1739.75 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 72.0 MB in the end (delta: 53.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 74994.99 ms. Allocated memory was 152.0 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 72.0 MB in the beginning and 910.5 MB in the end (delta: -838.5 MB). Peak memory consumption was 843.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_2419; [L77] int __tmp_2420_0; [L78] int __return_2543; [L79] int __return_2433; [L82] int main__c1; [L83] int main__i2; [L84] main__c1 = 0 [L85] ep12 = __VERIFIER_nondet_bool() [L86] ep13 = __VERIFIER_nondet_bool() [L87] ep21 = __VERIFIER_nondet_bool() [L88] ep23 = __VERIFIER_nondet_bool() [L89] ep31 = __VERIFIER_nondet_bool() [L90] ep32 = __VERIFIER_nondet_bool() [L91] id1 = __VERIFIER_nondet_char() [L92] r1 = __VERIFIER_nondet_char() [L93] st1 = __VERIFIER_nondet_char() [L94] nl1 = __VERIFIER_nondet_char() [L95] m1 = __VERIFIER_nondet_char() [L96] max1 = __VERIFIER_nondet_char() [L97] mode1 = __VERIFIER_nondet_bool() [L98] newmax1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_char() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] newmax2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L114] newmax3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2435] COND FALSE !(!(init__r131 == 0)) [L2451] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2412] COND FALSE !(!(init__r121 == 0)) [L2428] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2389] COND FALSE !(!(init__r231 == 0)) [L2405] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2366] COND FALSE !(!(init__r211 == 0)) [L2382] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2343] COND FALSE !(!(init__r321 == 0)) [L2359] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2320] COND FALSE !(!(init__r311 == 0)) [L2336] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] COND TRUE !(newmax1 == 0) [L215] COND TRUE !(newmax2 == 0) [L217] COND TRUE !(newmax3 == 0) [L219] init__tmp___5 = 1 [L220] __return_1863 = init__tmp___5 [L221] main__i2 = __return_1863 [L222] COND TRUE main__i2 != 0 [L224] p12_old = nomsg [L225] p12_new = nomsg [L226] p13_old = nomsg [L227] p13_new = nomsg [L228] p21_old = nomsg [L229] p21_new = nomsg [L230] p23_old = nomsg [L231] p23_new = nomsg [L232] p31_old = nomsg [L233] p31_new = nomsg [L234] p32_old = nomsg [L235] p32_new = nomsg [L236] main__i2 = 0 [L237] COND TRUE main__i2 < 6 [L240] _Bool node1__newmax; [L241] node1__newmax = 0 [L242] COND FALSE !(!(mode1 == 0)) [L248] COND TRUE ((int)r1) < 2 [L250] COND FALSE !(!(ep12 == 0)) [L263] COND FALSE !(!(ep13 == 0)) [L276] mode1 = 1 [L278] _Bool node2__newmax; [L279] node2__newmax = 0 [L280] COND FALSE !(!(mode2 == 0)) [L286] COND TRUE ((int)r2) < 2 [L288] COND FALSE !(!(ep21 == 0)) [L301] COND FALSE !(!(ep23 == 0)) [L314] mode2 = 1 [L316] _Bool node3__newmax; [L317] node3__newmax = 0 [L318] COND FALSE !(!(mode3 == 0)) [L324] COND TRUE ((int)r3) < 2 [L326] COND FALSE !(!(ep31 == 0)) [L339] COND FALSE !(!(ep32 == 0)) [L352] mode3 = 1 [L353] p12_old = p12_new [L354] p12_new = nomsg [L355] p13_old = p13_new [L356] p13_new = nomsg [L357] p21_old = p21_new [L358] p21_new = nomsg [L359] p23_old = p23_new [L360] p23_new = nomsg [L361] p31_old = p31_new [L362] p31_new = nomsg [L363] p32_old = p32_new [L364] p32_new = nomsg [L366] int check__tmp; [L367] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L369] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L371] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L373] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L375] COND FALSE !(((int)r1) >= 2) [L381] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L383] COND TRUE ((int)r1) < 2 [L385] COND FALSE !(((int)r1) >= 2) [L391] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L393] COND TRUE ((int)r1) < 2 [L395] check__tmp = 1 [L396] __return_2009 = check__tmp [L397] main__c1 = __return_2009 [L399] _Bool __tmp_1; [L400] __tmp_1 = main__c1 [L401] _Bool assert__arg; [L402] assert__arg = __tmp_1 [L403] COND FALSE !(assert__arg == 0) [L409] int main____CPAchecker_TMP_0 = main__i2; [L410] main__i2 = main__i2 + 1 [L411] COND TRUE main__i2 < 6 [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] r1 = (char)(((int)r1) + 1) [L419] COND FALSE !(!(ep21 == 0)) [L428] COND FALSE !(!(ep31 == 0)) [L437] newmax1 = node1__newmax [L438] COND FALSE !(((int)r1) == 2) [L444] mode1 = 0 [L446] _Bool node2__newmax; [L447] node2__newmax = 0 [L448] COND TRUE !(mode2 == 0) [L450] r2 = (char)(((int)r2) + 1) [L451] COND FALSE !(!(ep12 == 0)) [L460] COND FALSE !(!(ep32 == 0)) [L469] newmax2 = node2__newmax [L470] COND FALSE !(((int)r2) == 2) [L476] mode2 = 0 [L478] _Bool node3__newmax; [L479] node3__newmax = 0 [L480] COND TRUE !(mode3 == 0) [L482] r3 = (char)(((int)r3) + 1) [L483] COND FALSE !(!(ep13 == 0)) [L492] COND FALSE !(!(ep23 == 0)) [L501] newmax3 = node3__newmax [L502] COND FALSE !(((int)r3) == 2) [L508] mode3 = 0 [L509] p12_old = p12_new [L510] p12_new = nomsg [L511] p13_old = p13_new [L512] p13_new = nomsg [L513] p21_old = p21_new [L514] p21_new = nomsg [L515] p23_old = p23_new [L516] p23_new = nomsg [L517] p31_old = p31_new [L518] p31_new = nomsg [L519] p32_old = p32_new [L520] p32_new = nomsg [L522] int check__tmp; [L523] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L525] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L527] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L529] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L531] COND FALSE !(((int)r1) >= 2) [L537] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L539] COND TRUE ((int)r1) < 2 [L541] COND FALSE !(((int)r1) >= 2) [L547] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L549] COND TRUE ((int)r1) < 2 [L551] check__tmp = 1 [L552] __return_2142 = check__tmp [L553] main__c1 = __return_2142 [L555] _Bool __tmp_2; [L556] __tmp_2 = main__c1 [L557] _Bool assert__arg; [L558] assert__arg = __tmp_2 [L559] COND FALSE !(assert__arg == 0) [L565] int main____CPAchecker_TMP_0 = main__i2; [L566] main__i2 = main__i2 + 1 [L567] COND TRUE main__i2 < 6 [L570] _Bool node1__newmax; [L571] node1__newmax = 0 [L572] COND FALSE !(!(mode1 == 0)) [L578] COND TRUE ((int)r1) < 2 [L580] COND FALSE !(!(ep12 == 0)) [L593] COND FALSE !(!(ep13 == 0)) [L606] mode1 = 1 [L608] _Bool node2__newmax; [L609] node2__newmax = 0 [L610] COND FALSE !(!(mode2 == 0)) [L616] COND TRUE ((int)r2) < 2 [L618] COND FALSE !(!(ep21 == 0)) [L631] COND FALSE !(!(ep23 == 0)) [L644] mode2 = 1 [L646] _Bool node3__newmax; [L647] node3__newmax = 0 [L648] COND FALSE !(!(mode3 == 0)) [L654] COND TRUE ((int)r3) < 2 [L656] COND FALSE !(!(ep31 == 0)) [L669] COND FALSE !(!(ep32 == 0)) [L682] mode3 = 1 [L683] p12_old = p12_new [L684] p12_new = nomsg [L685] p13_old = p13_new [L686] p13_new = nomsg [L687] p21_old = p21_new [L688] p21_new = nomsg [L689] p23_old = p23_new [L690] p23_new = nomsg [L691] p31_old = p31_new [L692] p31_new = nomsg [L693] p32_old = p32_new [L694] p32_new = nomsg [L696] int check__tmp; [L697] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L699] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L701] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L703] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L705] COND FALSE !(((int)r1) >= 2) [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L713] COND TRUE ((int)r1) < 2 [L715] COND FALSE !(((int)r1) >= 2) [L721] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L723] COND TRUE ((int)r1) < 2 [L725] check__tmp = 1 [L726] __return_2281 = check__tmp [L727] main__c1 = __return_2281 [L729] _Bool __tmp_3; [L730] __tmp_3 = main__c1 [L731] _Bool assert__arg; [L732] assert__arg = __tmp_3 [L733] COND FALSE !(assert__arg == 0) [L739] int main____CPAchecker_TMP_0 = main__i2; [L740] main__i2 = main__i2 + 1 [L741] COND TRUE main__i2 < 6 [L744] _Bool node1__newmax; [L745] node1__newmax = 0 [L746] COND TRUE !(mode1 == 0) [L748] r1 = (char)(((int)r1) + 1) [L749] COND FALSE !(!(ep21 == 0)) [L758] COND FALSE !(!(ep31 == 0)) [L767] newmax1 = node1__newmax [L768] COND TRUE ((int)r1) == 2 [L770] COND TRUE ((int)max1) == ((int)id1) [L772] st1 = 1 [L774] mode1 = 0 [L776] _Bool node2__newmax; [L777] node2__newmax = 0 [L778] COND TRUE !(mode2 == 0) [L780] r2 = (char)(((int)r2) + 1) [L781] COND FALSE !(!(ep12 == 0)) [L790] COND FALSE !(!(ep32 == 0)) [L799] newmax2 = node2__newmax [L800] COND TRUE ((int)r2) == 2 [L802] COND TRUE ((int)max2) == ((int)id2) [L804] st2 = 1 [L806] mode2 = 0 [L808] _Bool node3__newmax; [L809] node3__newmax = 0 [L810] COND TRUE !(mode3 == 0) [L812] r3 = (char)(((int)r3) + 1) [L813] COND FALSE !(!(ep13 == 0)) [L822] COND FALSE !(!(ep23 == 0)) [L831] newmax3 = node3__newmax [L832] COND TRUE ((int)r3) == 2 [L834] COND TRUE ((int)max3) == ((int)id3) [L836] st3 = 1 [L838] mode3 = 0 [L839] p12_old = p12_new [L840] p12_new = nomsg [L841] p13_old = p13_new [L842] p13_new = nomsg [L843] p21_old = p21_new [L844] p21_new = nomsg [L845] p23_old = p23_new [L846] p23_new = nomsg [L847] p31_old = p31_new [L848] p31_new = nomsg [L849] p32_old = p32_new [L850] p32_new = nomsg [L852] int check__tmp; [L853] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1535] check__tmp = 0 [L881] __return_2419 = check__tmp [L882] main__c1 = __return_2419 [L883] __tmp_2420_0 = main____CPAchecker_TMP_0 [L885] main____CPAchecker_TMP_0 = __tmp_2420_0 [L887] _Bool __tmp_4; [L888] __tmp_4 = main__c1 [L889] _Bool assert__arg; [L890] assert__arg = __tmp_4 [L891] COND TRUE assert__arg == 0 [L893] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 344 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 74.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5969 SDtfs, 6609 SDslu, 3450 SDs, 0 SdLazy, 6512 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38944occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.5s InterpolantComputationTime, 1401 NumberOfCodeBlocks, 1401 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 1023169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...