./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0513.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0513.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:53:58,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:53:58,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:53:58,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:53:58,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:53:58,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:53:58,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:53:58,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:53:58,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:53:58,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:53:58,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:53:58,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:53:58,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:53:58,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:53:58,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:53:58,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:53:58,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:53:58,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:53:58,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:53:58,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:53:58,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:53:58,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:53:58,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:53:58,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:53:58,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:53:58,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:53:58,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:53:58,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:53:58,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:53:58,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:53:58,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:53:58,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:53:58,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:53:58,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:53:58,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:53:58,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:53:58,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:53:58,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:53:58,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:53:58,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:53:58,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:53:58,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 02:53:58,769 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:53:58,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:53:58,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:53:58,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:53:58,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:53:58,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:53:58,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:53:58,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:53:58,771 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:53:58,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:53:58,771 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:53:58,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 02:53:58,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:53:58,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 02:53:58,773 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:53:58,773 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:53:58,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:53:58,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:53:58,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:53:58,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:53:58,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:53:58,774 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e [2023-02-17 02:53:58,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:53:58,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:53:58,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:53:58,954 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:53:58,955 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:53:58,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0513.i [2023-02-17 02:53:59,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:54:00,096 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:54:00,096 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0513.i [2023-02-17 02:54:00,102 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b4b22a6d/4cfe3bcb442540b58de72e3978e3f93d/FLAGb87ac5baa [2023-02-17 02:54:00,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b4b22a6d/4cfe3bcb442540b58de72e3978e3f93d [2023-02-17 02:54:00,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:54:00,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:54:00,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:54:00,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:54:00,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:54:00,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6357c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00, skipping insertion in model container [2023-02-17 02:54:00,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:54:00,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:54:00,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:54:00,377 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:54:00,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:54:00,424 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:54:00,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00 WrapperNode [2023-02-17 02:54:00,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:54:00,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:54:00,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:54:00,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:54:00,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,473 INFO L138 Inliner]: procedures = 123, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2023-02-17 02:54:00,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:54:00,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:54:00,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:54:00,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:54:00,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:54:00,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:54:00,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:54:00,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:54:00,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (1/1) ... [2023-02-17 02:54:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:54:00,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:54:00,536 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) [2023-02-17 02:54:00,538 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 [2023-02-17 02:54:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 02:54:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 02:54:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 02:54:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:54:00,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:54:00,702 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:54:00,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:54:00,961 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:54:00,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:54:00,966 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-17 02:54:00,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:54:00 BoogieIcfgContainer [2023-02-17 02:54:00,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:54:00,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:54:00,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:54:00,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:54:00,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:54:00" (1/3) ... [2023-02-17 02:54:00,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8a9ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:54:00, skipping insertion in model container [2023-02-17 02:54:00,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:54:00" (2/3) ... [2023-02-17 02:54:00,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8a9ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:54:00, skipping insertion in model container [2023-02-17 02:54:00,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:54:00" (3/3) ... [2023-02-17 02:54:00,973 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0513.i [2023-02-17 02:54:00,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:54:00,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-02-17 02:54:01,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:54:01,031 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e52b0b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:54:01,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-02-17 02:54:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 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) [2023-02-17 02:54:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 02:54:01,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 02:54:01,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash 28740643, now seen corresponding path program 1 times [2023-02-17 02:54:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79814913] [2023-02-17 02:54:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79814913] [2023-02-17 02:54:01,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79814913] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226644793] [2023-02-17 02:54:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 02:54:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 02:54:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 02:54:01,189 INFO L87 Difference]: Start difference. First operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 02:54:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,218 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2023-02-17 02:54:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 02:54:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-02-17 02:54:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,228 INFO L225 Difference]: With dead ends: 132 [2023-02-17 02:54:01,229 INFO L226 Difference]: Without dead ends: 130 [2023-02-17 02:54:01,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 02:54:01,236 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:54:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-17 02:54:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-02-17 02:54:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 129 states have internal predecessors, (138), 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) [2023-02-17 02:54:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2023-02-17 02:54:01,270 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 5 [2023-02-17 02:54:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,271 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2023-02-17 02:54:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-17 02:54:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2023-02-17 02:54:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 02:54:01,271 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 02:54:01,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 889570808, now seen corresponding path program 1 times [2023-02-17 02:54:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711853581] [2023-02-17 02:54:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711853581] [2023-02-17 02:54:01,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711853581] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814970919] [2023-02-17 02:54:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:01,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,328 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,447 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2023-02-17 02:54:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-17 02:54:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,448 INFO L225 Difference]: With dead ends: 176 [2023-02-17 02:54:01,448 INFO L226 Difference]: Without dead ends: 175 [2023-02-17 02:54:01,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,450 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 192 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-17 02:54:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 133. [2023-02-17 02:54:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 2.0) internal successors, (142), 132 states have internal predecessors, (142), 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) [2023-02-17 02:54:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2023-02-17 02:54:01,459 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 6 [2023-02-17 02:54:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,459 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2023-02-17 02:54:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2023-02-17 02:54:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 02:54:01,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 02:54:01,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 889570732, now seen corresponding path program 1 times [2023-02-17 02:54:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425817909] [2023-02-17 02:54:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425817909] [2023-02-17 02:54:01,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425817909] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 02:54:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469367074] [2023-02-17 02:54:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:01,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,491 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,533 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2023-02-17 02:54:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:01,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-17 02:54:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,534 INFO L225 Difference]: With dead ends: 145 [2023-02-17 02:54:01,534 INFO L226 Difference]: Without dead ends: 144 [2023-02-17 02:54:01,535 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 [2023-02-17 02:54:01,536 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 229 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:54:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-17 02:54:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-02-17 02:54:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 137 states have internal predecessors, (150), 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) [2023-02-17 02:54:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2023-02-17 02:54:01,541 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 6 [2023-02-17 02:54:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,541 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2023-02-17 02:54:01,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2023-02-17 02:54:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 02:54:01,542 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 02:54:01,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2023-02-17 02:54:01,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674036265] [2023-02-17 02:54:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674036265] [2023-02-17 02:54:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674036265] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467776181] [2023-02-17 02:54:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,581 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,678 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2023-02-17 02:54:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-17 02:54:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,682 INFO L225 Difference]: With dead ends: 169 [2023-02-17 02:54:01,682 INFO L226 Difference]: Without dead ends: 169 [2023-02-17 02:54:01,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,690 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 75 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 167 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-02-17 02:54:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2023-02-17 02:54:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 80 states have (on average 1.9125) internal successors, (153), 138 states have internal predecessors, (153), 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) [2023-02-17 02:54:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2023-02-17 02:54:01,706 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 6 [2023-02-17 02:54:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,707 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2023-02-17 02:54:01,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2023-02-17 02:54:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 02:54:01,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 02:54:01,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2023-02-17 02:54:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077099241] [2023-02-17 02:54:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077099241] [2023-02-17 02:54:01,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077099241] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125666375] [2023-02-17 02:54:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,777 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,855 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2023-02-17 02:54:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-17 02:54:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,856 INFO L225 Difference]: With dead ends: 137 [2023-02-17 02:54:01,856 INFO L226 Difference]: Without dead ends: 137 [2023-02-17 02:54:01,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,857 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 173 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-17 02:54:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-02-17 02:54:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 80 states have (on average 1.8625) internal successors, (149), 136 states have internal predecessors, (149), 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) [2023-02-17 02:54:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2023-02-17 02:54:01,861 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 6 [2023-02-17 02:54:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,861 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2023-02-17 02:54:01,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 02:54:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2023-02-17 02:54:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 02:54:01,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 02:54:01,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659887, now seen corresponding path program 1 times [2023-02-17 02:54:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294956175] [2023-02-17 02:54:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:01,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294956175] [2023-02-17 02:54:01,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294956175] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:01,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:01,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387705984] [2023-02-17 02:54:01,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,924 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-17 02:54:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:01,980 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2023-02-17 02:54:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-02-17 02:54:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:01,981 INFO L225 Difference]: With dead ends: 133 [2023-02-17 02:54:01,981 INFO L226 Difference]: Without dead ends: 133 [2023-02-17 02:54:01,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:01,982 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:01,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 168 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-17 02:54:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-17 02:54:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.8125) internal successors, (145), 132 states have internal predecessors, (145), 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) [2023-02-17 02:54:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2023-02-17 02:54:01,990 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 11 [2023-02-17 02:54:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:01,990 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2023-02-17 02:54:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-17 02:54:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2023-02-17 02:54:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 02:54:01,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:01,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 02:54:01,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659886, now seen corresponding path program 1 times [2023-02-17 02:54:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251539324] [2023-02-17 02:54:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:02,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251539324] [2023-02-17 02:54:02,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251539324] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:02,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:02,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:54:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861845740] [2023-02-17 02:54:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:54:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:54:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:02,075 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-17 02:54:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:02,138 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2023-02-17 02:54:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:54:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-02-17 02:54:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:02,139 INFO L225 Difference]: With dead ends: 130 [2023-02-17 02:54:02,140 INFO L226 Difference]: Without dead ends: 130 [2023-02-17 02:54:02,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:54:02,141 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:02,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 179 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-17 02:54:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-02-17 02:54:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.775) internal successors, (142), 129 states have internal predecessors, (142), 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) [2023-02-17 02:54:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2023-02-17 02:54:02,145 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 11 [2023-02-17 02:54:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:02,145 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2023-02-17 02:54:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-17 02:54:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2023-02-17 02:54:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 02:54:02,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:02,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 02:54:02,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash -967503371, now seen corresponding path program 1 times [2023-02-17 02:54:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:02,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322798808] [2023-02-17 02:54:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:02,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322798808] [2023-02-17 02:54:02,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322798808] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:02,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:02,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 02:54:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134800540] [2023-02-17 02:54:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:54:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:54:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:54:02,211 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:02,301 INFO L93 Difference]: Finished difference Result 228 states and 248 transitions. [2023-02-17 02:54:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:54:02,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2023-02-17 02:54:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:02,302 INFO L225 Difference]: With dead ends: 228 [2023-02-17 02:54:02,302 INFO L226 Difference]: Without dead ends: 228 [2023-02-17 02:54:02,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:02,303 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 126 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:02,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 251 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-17 02:54:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 130. [2023-02-17 02:54:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.75) internal successors, (140), 129 states have internal predecessors, (140), 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) [2023-02-17 02:54:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2023-02-17 02:54:02,306 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 18 [2023-02-17 02:54:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:02,306 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2023-02-17 02:54:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2023-02-17 02:54:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 02:54:02,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:02,307 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 02:54:02,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -967503447, now seen corresponding path program 1 times [2023-02-17 02:54:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027436850] [2023-02-17 02:54:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:02,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027436850] [2023-02-17 02:54:02,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027436850] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:02,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:02,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 02:54:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877854648] [2023-02-17 02:54:02,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:54:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:54:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:02,361 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:02,470 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2023-02-17 02:54:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:54:02,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2023-02-17 02:54:02,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:02,471 INFO L225 Difference]: With dead ends: 124 [2023-02-17 02:54:02,471 INFO L226 Difference]: Without dead ends: 124 [2023-02-17 02:54:02,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:02,473 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 45 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:02,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 213 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-17 02:54:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2023-02-17 02:54:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.654320987654321) internal successors, (134), 122 states have internal predecessors, (134), 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) [2023-02-17 02:54:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2023-02-17 02:54:02,476 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 18 [2023-02-17 02:54:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:02,476 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2023-02-17 02:54:02,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2023-02-17 02:54:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 02:54:02,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:02,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 02:54:02,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -967503446, now seen corresponding path program 1 times [2023-02-17 02:54:02,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:02,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979765833] [2023-02-17 02:54:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:02,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979765833] [2023-02-17 02:54:02,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979765833] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:02,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:02,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 02:54:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748698937] [2023-02-17 02:54:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:02,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:54:02,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:54:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:54:02,601 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:02,728 INFO L93 Difference]: Finished difference Result 204 states and 223 transitions. [2023-02-17 02:54:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:54:02,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2023-02-17 02:54:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:02,729 INFO L225 Difference]: With dead ends: 204 [2023-02-17 02:54:02,729 INFO L226 Difference]: Without dead ends: 204 [2023-02-17 02:54:02,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:02,729 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 100 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:02,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 168 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-17 02:54:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2023-02-17 02:54:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 122 states have (on average 1.680327868852459) internal successors, (205), 161 states have internal predecessors, (205), 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) [2023-02-17 02:54:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2023-02-17 02:54:02,735 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 18 [2023-02-17 02:54:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2023-02-17 02:54:02,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-02-17 02:54:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2023-02-17 02:54:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 02:54:02,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:02,736 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 02:54:02,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 199814016, now seen corresponding path program 1 times [2023-02-17 02:54:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827408509] [2023-02-17 02:54:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:02,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827408509] [2023-02-17 02:54:02,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827408509] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:02,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:02,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 02:54:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849002554] [2023-02-17 02:54:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:54:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:54:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:02,796 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2023-02-17 02:54:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:02,893 INFO L93 Difference]: Finished difference Result 205 states and 224 transitions. [2023-02-17 02:54:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 02:54:02,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2023-02-17 02:54:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:02,897 INFO L225 Difference]: With dead ends: 205 [2023-02-17 02:54:02,897 INFO L226 Difference]: Without dead ends: 205 [2023-02-17 02:54:02,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:54:02,897 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 224 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:02,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 309 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-17 02:54:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2023-02-17 02:54:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 123 states have (on average 1.6747967479674797) internal successors, (206), 162 states have internal predecessors, (206), 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) [2023-02-17 02:54:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 206 transitions. [2023-02-17 02:54:02,901 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 206 transitions. Word has length 23 [2023-02-17 02:54:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:02,901 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 206 transitions. [2023-02-17 02:54:02,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2023-02-17 02:54:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 206 transitions. [2023-02-17 02:54:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 02:54:02,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:02,906 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:02,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 02:54:02,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 198674982, now seen corresponding path program 1 times [2023-02-17 02:54:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424324202] [2023-02-17 02:54:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:02,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:03,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424324202] [2023-02-17 02:54:03,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424324202] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:03,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:03,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 02:54:03,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121610617] [2023-02-17 02:54:03,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 02:54:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 02:54:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:54:03,020 INFO L87 Difference]: Start difference. First operand 163 states and 206 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-02-17 02:54:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:03,122 INFO L93 Difference]: Finished difference Result 191 states and 235 transitions. [2023-02-17 02:54:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 02:54:03,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2023-02-17 02:54:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:03,123 INFO L225 Difference]: With dead ends: 191 [2023-02-17 02:54:03,123 INFO L226 Difference]: Without dead ends: 191 [2023-02-17 02:54:03,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-17 02:54:03,124 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 23 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:03,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 399 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-02-17 02:54:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 170. [2023-02-17 02:54:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 130 states have (on average 1.646153846153846) internal successors, (214), 169 states have internal predecessors, (214), 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) [2023-02-17 02:54:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2023-02-17 02:54:03,127 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 23 [2023-02-17 02:54:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:03,127 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2023-02-17 02:54:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-02-17 02:54:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2023-02-17 02:54:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 02:54:03,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:03,128 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 02:54:03,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash -165115758, now seen corresponding path program 1 times [2023-02-17 02:54:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:03,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874136418] [2023-02-17 02:54:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:03,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874136418] [2023-02-17 02:54:03,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874136418] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:03,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:03,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 02:54:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585491386] [2023-02-17 02:54:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:03,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 02:54:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 02:54:03,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-02-17 02:54:03,315 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2023-02-17 02:54:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:03,738 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2023-02-17 02:54:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 02:54:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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 26 [2023-02-17 02:54:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:03,739 INFO L225 Difference]: With dead ends: 228 [2023-02-17 02:54:03,739 INFO L226 Difference]: Without dead ends: 228 [2023-02-17 02:54:03,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-02-17 02:54:03,739 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 117 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:03,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 491 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 02:54:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-17 02:54:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 177. [2023-02-17 02:54:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6277372262773722) internal successors, (223), 176 states have internal predecessors, (223), 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) [2023-02-17 02:54:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2023-02-17 02:54:03,742 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 26 [2023-02-17 02:54:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:03,742 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2023-02-17 02:54:03,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2023-02-17 02:54:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2023-02-17 02:54:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 02:54:03,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:03,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:03,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 02:54:03,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash -165115757, now seen corresponding path program 1 times [2023-02-17 02:54:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:03,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120490990] [2023-02-17 02:54:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:04,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120490990] [2023-02-17 02:54:04,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120490990] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:04,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:04,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:54:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793548491] [2023-02-17 02:54:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:04,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 02:54:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 02:54:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 02:54:04,075 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-02-17 02:54:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:04,450 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2023-02-17 02:54:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 02:54:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2023-02-17 02:54:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:04,451 INFO L225 Difference]: With dead ends: 207 [2023-02-17 02:54:04,451 INFO L226 Difference]: Without dead ends: 207 [2023-02-17 02:54:04,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:54:04,452 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 76 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:04,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 329 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:54:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-02-17 02:54:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2023-02-17 02:54:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 176 states have internal predecessors, (222), 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) [2023-02-17 02:54:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 222 transitions. [2023-02-17 02:54:04,454 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 222 transitions. Word has length 26 [2023-02-17 02:54:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:04,454 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 222 transitions. [2023-02-17 02:54:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-02-17 02:54:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 222 transitions. [2023-02-17 02:54:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 02:54:04,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:04,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 02:54:04,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash -823622550, now seen corresponding path program 1 times [2023-02-17 02:54:04,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:04,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827111798] [2023-02-17 02:54:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:04,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:04,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827111798] [2023-02-17 02:54:04,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827111798] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:04,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:04,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:54:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588629877] [2023-02-17 02:54:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 02:54:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 02:54:04,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-17 02:54:04,601 INFO L87 Difference]: Start difference. First operand 177 states and 222 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-02-17 02:54:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:04,728 INFO L93 Difference]: Finished difference Result 194 states and 238 transitions. [2023-02-17 02:54:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 02:54:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2023-02-17 02:54:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:04,730 INFO L225 Difference]: With dead ends: 194 [2023-02-17 02:54:04,730 INFO L226 Difference]: Without dead ends: 194 [2023-02-17 02:54:04,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-02-17 02:54:04,732 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 34 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:04,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 370 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-17 02:54:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2023-02-17 02:54:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 176 states have internal predecessors, (221), 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) [2023-02-17 02:54:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 221 transitions. [2023-02-17 02:54:04,735 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 221 transitions. Word has length 27 [2023-02-17 02:54:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:04,735 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 221 transitions. [2023-02-17 02:54:04,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-02-17 02:54:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 221 transitions. [2023-02-17 02:54:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 02:54:04,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:04,738 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:04,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 02:54:04,738 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 237551634, now seen corresponding path program 1 times [2023-02-17 02:54:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:04,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165117993] [2023-02-17 02:54:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165117993] [2023-02-17 02:54:04,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165117993] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:04,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:04,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:54:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709317389] [2023-02-17 02:54:04,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:04,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 02:54:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 02:54:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-17 02:54:04,888 INFO L87 Difference]: Start difference. First operand 177 states and 221 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2023-02-17 02:54:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:05,085 INFO L93 Difference]: Finished difference Result 229 states and 275 transitions. [2023-02-17 02:54:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 02:54:05,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2023-02-17 02:54:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:05,086 INFO L225 Difference]: With dead ends: 229 [2023-02-17 02:54:05,086 INFO L226 Difference]: Without dead ends: 229 [2023-02-17 02:54:05,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:54:05,087 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 176 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:05,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 569 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:54:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-02-17 02:54:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 179. [2023-02-17 02:54:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.60431654676259) internal successors, (223), 178 states have internal predecessors, (223), 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) [2023-02-17 02:54:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 223 transitions. [2023-02-17 02:54:05,091 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 223 transitions. Word has length 28 [2023-02-17 02:54:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 223 transitions. [2023-02-17 02:54:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2023-02-17 02:54:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 223 transitions. [2023-02-17 02:54:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 02:54:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:05,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 02:54:05,093 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1225833714, now seen corresponding path program 1 times [2023-02-17 02:54:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241750726] [2023-02-17 02:54:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241750726] [2023-02-17 02:54:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241750726] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:05,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:54:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855543740] [2023-02-17 02:54:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 02:54:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 02:54:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 02:54:05,236 INFO L87 Difference]: Start difference. First operand 179 states and 223 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2023-02-17 02:54:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:05,453 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2023-02-17 02:54:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 02:54:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 29 [2023-02-17 02:54:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:05,454 INFO L225 Difference]: With dead ends: 200 [2023-02-17 02:54:05,454 INFO L226 Difference]: Without dead ends: 200 [2023-02-17 02:54:05,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-02-17 02:54:05,455 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 46 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:05,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 445 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:54:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-02-17 02:54:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2023-02-17 02:54:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.6) internal successors, (224), 179 states have internal predecessors, (224), 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) [2023-02-17 02:54:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 224 transitions. [2023-02-17 02:54:05,457 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 224 transitions. Word has length 29 [2023-02-17 02:54:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:05,457 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 224 transitions. [2023-02-17 02:54:05,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2023-02-17 02:54:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 224 transitions. [2023-02-17 02:54:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 02:54:05,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:05,458 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:05,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 02:54:05,458 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 653860756, now seen corresponding path program 1 times [2023-02-17 02:54:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:05,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809662064] [2023-02-17 02:54:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:54:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:05,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809662064] [2023-02-17 02:54:05,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809662064] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:54:05,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:54:05,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 02:54:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024242805] [2023-02-17 02:54:05,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:54:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:54:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:54:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:54:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:54:05,485 INFO L87 Difference]: Start difference. First operand 180 states and 224 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-02-17 02:54:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:54:05,594 INFO L93 Difference]: Finished difference Result 251 states and 315 transitions. [2023-02-17 02:54:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:54:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 30 [2023-02-17 02:54:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:54:05,595 INFO L225 Difference]: With dead ends: 251 [2023-02-17 02:54:05,595 INFO L226 Difference]: Without dead ends: 251 [2023-02-17 02:54:05,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:54:05,595 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 77 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:54:05,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 230 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:54:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-17 02:54:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 184. [2023-02-17 02:54:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 183 states have internal predecessors, (235), 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) [2023-02-17 02:54:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2023-02-17 02:54:05,598 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 30 [2023-02-17 02:54:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:54:05,598 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2023-02-17 02:54:05,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-02-17 02:54:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2023-02-17 02:54:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 02:54:05,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:54:05,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:54:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-17 02:54:05,599 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-02-17 02:54:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:54:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1294968215, now seen corresponding path program 1 times [2023-02-17 02:54:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:54:05,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279411689] [2023-02-17 02:54:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:54:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:54:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:54:05,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279411689] [2023-02-17 02:54:05,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279411689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:54:05,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414714703] [2023-02-17 02:54:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:54:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:54:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:54:05,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:54:05,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 02:54:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:54:06,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-17 02:54:06,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:54:06,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 02:54:06,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 02:54:06,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-17 02:54:06,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-17 02:54:06,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:06,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-17 02:54:06,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:06,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-17 02:54:06,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:06,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 42 [2023-02-17 02:54:06,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:06,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 52 [2023-02-17 02:54:06,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-02-17 02:54:06,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 36 [2023-02-17 02:54:06,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 02:54:07,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:07,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 29 new quantified variables, introduced 253 case distinctions, treesize of input 733 treesize of output 2635 [2023-02-17 02:54:07,476 INFO L217 Elim1Store]: Index analysis took 117 ms [2023-02-17 02:54:07,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:07,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 569 treesize of output 1167 [2023-02-17 02:54:07,901 INFO L217 Elim1Store]: Index analysis took 262 ms [2023-02-17 02:54:07,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 02:54:07,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 547 treesize of output 2091