./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:48:42,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:48:42,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:48:42,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:48:42,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:48:42,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:48:42,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:48:42,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:48:42,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:48:42,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:48:42,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:48:42,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:48:42,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:48:42,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:48:42,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:48:42,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:48:42,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:48:42,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:48:42,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:48:42,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:48:42,147 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:48:42,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:48:42,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:48:42,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:48:42,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:48:42,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:48:42,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:48:42,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:48:42,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:48:42,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:48:42,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:48:42,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:48:42,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:48:42,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:48:42,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:48:42,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:48:42,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:48:42,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:48:42,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:48:42,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:48:42,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:48:42,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:48:42,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:48:42,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:48:42,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:48:42,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:48:42,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:48:42,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:48:42,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:48:42,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:48:42,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:48:42,205 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:48:42,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:48:42,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:48:42,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:48:42,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:48:42,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:48:42,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:48:42,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:48:42,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:48:42,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:48:42,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:48:42,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:48:42,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:48:42,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:48:42,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:48:42,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:48:42,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:48:42,210 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:48:42,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:48:42,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:48:42,211 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 [2022-07-13 18:48:42,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:48:42,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:48:42,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:48:42,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:48:42,482 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:48:42,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-13 18:48:42,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027045af2/96c573e6458149c883912cef0ade4012/FLAG669819e64 [2022-07-13 18:48:42,931 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:48:42,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-13 18:48:42,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027045af2/96c573e6458149c883912cef0ade4012/FLAG669819e64 [2022-07-13 18:48:43,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027045af2/96c573e6458149c883912cef0ade4012 [2022-07-13 18:48:43,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:48:43,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:48:43,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:48:43,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:48:43,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:48:43,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b35c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43, skipping insertion in model container [2022-07-13 18:48:43,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:48:43,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:48:43,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-07-13 18:48:43,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:48:43,665 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:48:43,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-07-13 18:48:43,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:48:43,772 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:48:43,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43 WrapperNode [2022-07-13 18:48:43,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:48:43,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:48:43,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:48:43,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:48:43,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,837 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 524 [2022-07-13 18:48:43,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:48:43,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:48:43,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:48:43,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:48:43,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:48:43,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:48:43,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:48:43,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:48:43,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (1/1) ... [2022-07-13 18:48:43,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:48:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:48:43,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:48:43,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:48:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:48:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:48:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:48:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:48:44,133 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:48:44,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:48:44,579 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:48:44,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:48:44,587 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:48:44,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:48:44 BoogieIcfgContainer [2022-07-13 18:48:44,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:48:44,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:48:44,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:48:44,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:48:44,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:48:43" (1/3) ... [2022-07-13 18:48:44,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d34a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:48:44, skipping insertion in model container [2022-07-13 18:48:44,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:48:43" (2/3) ... [2022-07-13 18:48:44,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d34a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:48:44, skipping insertion in model container [2022-07-13 18:48:44,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:48:44" (3/3) ... [2022-07-13 18:48:44,597 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-13 18:48:44,610 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:48:44,610 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:48:44,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:48:44,663 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ac1aca1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@882ef63 [2022-07-13 18:48:44,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:48:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 18:48:44,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:44,690 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:44,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -793823884, now seen corresponding path program 1 times [2022-07-13 18:48:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:44,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841147009] [2022-07-13 18:48:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:45,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841147009] [2022-07-13 18:48:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841147009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:45,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:45,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:48:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159679453] [2022-07-13 18:48:45,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:45,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:48:45,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:48:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,129 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:45,226 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2022-07-13 18:48:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:48:45,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-13 18:48:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:45,249 INFO L225 Difference]: With dead ends: 322 [2022-07-13 18:48:45,250 INFO L226 Difference]: Without dead ends: 215 [2022-07-13 18:48:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,257 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:45,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 504 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-13 18:48:45,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2022-07-13 18:48:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.5047169811320755) internal successors, (319), 212 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2022-07-13 18:48:45,319 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2022-07-13 18:48:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:45,320 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2022-07-13 18:48:45,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2022-07-13 18:48:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 18:48:45,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:45,325 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:48:45,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1200786689, now seen corresponding path program 1 times [2022-07-13 18:48:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:45,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901147781] [2022-07-13 18:48:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:45,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:45,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901147781] [2022-07-13 18:48:45,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901147781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:45,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:45,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:48:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562253823] [2022-07-13 18:48:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:48:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:48:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,480 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:45,531 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2022-07-13 18:48:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:48:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-13 18:48:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:45,548 INFO L225 Difference]: With dead ends: 537 [2022-07-13 18:48:45,548 INFO L226 Difference]: Without dead ends: 359 [2022-07-13 18:48:45,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,550 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:45,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-13 18:48:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-07-13 18:48:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5393258426966292) internal successors, (548), 356 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2022-07-13 18:48:45,593 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2022-07-13 18:48:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:45,594 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2022-07-13 18:48:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2022-07-13 18:48:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 18:48:45,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:45,602 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:48:45,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1872640227, now seen corresponding path program 1 times [2022-07-13 18:48:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:45,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374033974] [2022-07-13 18:48:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:45,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:45,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374033974] [2022-07-13 18:48:45,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374033974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:45,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:45,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:48:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792314360] [2022-07-13 18:48:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:45,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:48:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:48:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,681 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:45,721 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2022-07-13 18:48:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:48:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 18:48:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:45,725 INFO L225 Difference]: With dead ends: 937 [2022-07-13 18:48:45,725 INFO L226 Difference]: Without dead ends: 615 [2022-07-13 18:48:45,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,729 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 134 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:45,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 428 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-13 18:48:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2022-07-13 18:48:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5555555555555556) internal successors, (952), 612 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2022-07-13 18:48:45,798 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2022-07-13 18:48:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:45,799 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2022-07-13 18:48:45,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2022-07-13 18:48:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 18:48:45,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:45,801 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:45,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:48:45,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -562045070, now seen corresponding path program 1 times [2022-07-13 18:48:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:45,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440114336] [2022-07-13 18:48:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:45,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:45,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440114336] [2022-07-13 18:48:45,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440114336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:45,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:45,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:48:45,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818306872] [2022-07-13 18:48:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:48:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:48:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:45,915 INFO L87 Difference]: Start difference. First operand 613 states and 952 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:45,994 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2022-07-13 18:48:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:48:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-13 18:48:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:46,001 INFO L225 Difference]: With dead ends: 1641 [2022-07-13 18:48:46,001 INFO L226 Difference]: Without dead ends: 1063 [2022-07-13 18:48:46,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:46,013 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:46,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-07-13 18:48:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2022-07-13 18:48:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.558490566037736) internal successors, (1652), 1060 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2022-07-13 18:48:46,099 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2022-07-13 18:48:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:46,099 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2022-07-13 18:48:46,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2022-07-13 18:48:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 18:48:46,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:46,103 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:48:46,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1925116710, now seen corresponding path program 1 times [2022-07-13 18:48:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:46,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205752902] [2022-07-13 18:48:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:46,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:46,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205752902] [2022-07-13 18:48:46,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205752902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:46,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:46,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:48:46,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651266233] [2022-07-13 18:48:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:48:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:48:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:46,190 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:46,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:46,316 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2022-07-13 18:48:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:48:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-13 18:48:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:46,327 INFO L225 Difference]: With dead ends: 2857 [2022-07-13 18:48:46,327 INFO L226 Difference]: Without dead ends: 1831 [2022-07-13 18:48:46,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:48:46,333 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:46,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-07-13 18:48:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2022-07-13 18:48:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.5514223194748358) internal successors, (2836), 1828 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2022-07-13 18:48:46,472 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2022-07-13 18:48:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:46,474 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2022-07-13 18:48:46,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2022-07-13 18:48:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 18:48:46,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:46,478 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:48:46,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 210559993, now seen corresponding path program 1 times [2022-07-13 18:48:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685104263] [2022-07-13 18:48:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685104263] [2022-07-13 18:48:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685104263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:46,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:46,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:48:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542737071] [2022-07-13 18:48:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:48:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:48:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:48:46,577 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:47,449 INFO L93 Difference]: Finished difference Result 12593 states and 19642 transitions. [2022-07-13 18:48:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:48:47,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-13 18:48:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:47,496 INFO L225 Difference]: With dead ends: 12593 [2022-07-13 18:48:47,497 INFO L226 Difference]: Without dead ends: 10799 [2022-07-13 18:48:47,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:48:47,504 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 2059 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:47,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1257 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:48:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2022-07-13 18:48:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 3621. [2022-07-13 18:48:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3620 states have (on average 1.5392265193370165) internal successors, (5572), 3620 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5572 transitions. [2022-07-13 18:48:47,930 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5572 transitions. Word has length 65 [2022-07-13 18:48:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:47,931 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 5572 transitions. [2022-07-13 18:48:47,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5572 transitions. [2022-07-13 18:48:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 18:48:47,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:47,933 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:47,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:48:47,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2082031049, now seen corresponding path program 1 times [2022-07-13 18:48:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:47,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449858508] [2022-07-13 18:48:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:48,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:48,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449858508] [2022-07-13 18:48:48,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449858508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:48,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:48,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:48:48,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007413913] [2022-07-13 18:48:48,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:48,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:48:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:48:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:48:48,092 INFO L87 Difference]: Start difference. First operand 3621 states and 5572 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:49,943 INFO L93 Difference]: Finished difference Result 18831 states and 28777 transitions. [2022-07-13 18:48:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:48:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-13 18:48:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:50,003 INFO L225 Difference]: With dead ends: 18831 [2022-07-13 18:48:50,003 INFO L226 Difference]: Without dead ends: 15245 [2022-07-13 18:48:50,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:48:50,018 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 671 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:50,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1292 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:48:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-07-13 18:48:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 15237. [2022-07-13 18:48:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15237 states, 15236 states have (on average 1.520871619847729) internal successors, (23172), 15236 states have internal predecessors, (23172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 23172 transitions. [2022-07-13 18:48:51,808 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 23172 transitions. Word has length 66 [2022-07-13 18:48:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:51,809 INFO L495 AbstractCegarLoop]: Abstraction has 15237 states and 23172 transitions. [2022-07-13 18:48:51,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 23172 transitions. [2022-07-13 18:48:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:48:51,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:51,810 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:48:51,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 254256256, now seen corresponding path program 1 times [2022-07-13 18:48:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343444800] [2022-07-13 18:48:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:51,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:51,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343444800] [2022-07-13 18:48:51,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343444800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:51,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:51,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:48:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502720354] [2022-07-13 18:48:51,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:48:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:48:51,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:48:51,883 INFO L87 Difference]: Start difference. First operand 15237 states and 23172 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:48:54,819 INFO L93 Difference]: Finished difference Result 45641 states and 69446 transitions. [2022-07-13 18:48:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:48:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 18:48:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:48:54,894 INFO L225 Difference]: With dead ends: 45641 [2022-07-13 18:48:54,895 INFO L226 Difference]: Without dead ends: 30439 [2022-07-13 18:48:54,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:48:54,920 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 824 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:48:54,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 212 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:48:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30439 states. [2022-07-13 18:48:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30439 to 30437. [2022-07-13 18:48:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 30436 states have (on average 1.5120252332763833) internal successors, (46020), 30436 states have internal predecessors, (46020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 46020 transitions. [2022-07-13 18:48:57,637 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 46020 transitions. Word has length 68 [2022-07-13 18:48:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:48:57,637 INFO L495 AbstractCegarLoop]: Abstraction has 30437 states and 46020 transitions. [2022-07-13 18:48:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:48:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 46020 transitions. [2022-07-13 18:48:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:48:57,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:48:57,644 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:48:57,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:48:57,645 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:48:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:48:57,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1142699675, now seen corresponding path program 1 times [2022-07-13 18:48:57,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:48:57,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110412049] [2022-07-13 18:48:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:48:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:48:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:48:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:48:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:48:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110412049] [2022-07-13 18:48:57,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110412049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:48:57,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:48:57,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:48:57,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997303315] [2022-07-13 18:48:57,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:48:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:48:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:48:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:48:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:48:57,729 INFO L87 Difference]: Start difference. First operand 30437 states and 46020 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:49:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:49:03,211 INFO L93 Difference]: Finished difference Result 62119 states and 93285 transitions. [2022-07-13 18:49:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:49:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 18:49:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:49:03,365 INFO L225 Difference]: With dead ends: 62119 [2022-07-13 18:49:03,366 INFO L226 Difference]: Without dead ends: 62117 [2022-07-13 18:49:03,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:49:03,393 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 300 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:49:03,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 939 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:49:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62117 states. [2022-07-13 18:49:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62117 to 31717. [2022-07-13 18:49:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31717 states, 31716 states have (on average 1.4913608273426662) internal successors, (47300), 31716 states have internal predecessors, (47300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:49:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31717 states to 31717 states and 47300 transitions. [2022-07-13 18:49:07,456 INFO L78 Accepts]: Start accepts. Automaton has 31717 states and 47300 transitions. Word has length 68 [2022-07-13 18:49:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:49:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 31717 states and 47300 transitions. [2022-07-13 18:49:07,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:49:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31717 states and 47300 transitions. [2022-07-13 18:49:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 18:49:07,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:49:07,458 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:49:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:49:07,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:49:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:49:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1053378469, now seen corresponding path program 1 times [2022-07-13 18:49:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:49:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460428938] [2022-07-13 18:49:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:49:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:49:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:49:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:49:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:49:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460428938] [2022-07-13 18:49:07,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460428938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:49:07,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:49:07,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:49:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57951084] [2022-07-13 18:49:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:49:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:49:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:49:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:49:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:49:07,499 INFO L87 Difference]: Start difference. First operand 31717 states and 47300 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:49:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:49:11,371 INFO L93 Difference]: Finished difference Result 70715 states and 105272 transitions. [2022-07-13 18:49:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:49:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-13 18:49:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:49:11,454 INFO L225 Difference]: With dead ends: 70715 [2022-07-13 18:49:11,454 INFO L226 Difference]: Without dead ends: 39033 [2022-07-13 18:49:11,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:49:11,506 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 112 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:49:11,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 385 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:49:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39033 states.