./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 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/forester-heap/dll-token-1.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 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:07:01,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:07:01,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:07:02,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:07:02,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:07:02,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:07:02,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:07:02,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:07:02,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:07:02,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:07:02,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:07:02,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:07:02,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:07:02,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:07:02,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:07:02,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:07:02,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:07:02,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:07:02,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:07:02,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:07:02,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:07:02,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:07:02,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:07:02,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:07:02,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:07:02,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:07:02,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:07:02,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:07:02,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:07:02,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:07:02,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:07:02,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:07:02,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:07:02,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:07:02,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:07:02,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:07:02,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:07:02,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:07:02,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:07:02,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:07:02,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:07:02,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:07:02,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:07:02,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:07:02,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:07:02,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:07:02,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:07:02,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:07:02,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:07:02,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:07:02,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:07:02,108 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:07:02,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:07:02,109 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:07:02,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:07:02,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:07:02,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:07:02,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:07:02,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:07:02,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:07:02,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:07:02,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:07:02,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:07:02,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2022-07-20 06:07:02,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:07:02,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:07:02,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:07:02,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:07:02,378 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:07:02,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-1.i [2022-07-20 06:07:02,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a794eeb/58e36acb853545b9a863f5ef60f5ed9d/FLAGb64e34996 [2022-07-20 06:07:02,919 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:07:02,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i [2022-07-20 06:07:02,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a794eeb/58e36acb853545b9a863f5ef60f5ed9d/FLAGb64e34996 [2022-07-20 06:07:03,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a794eeb/58e36acb853545b9a863f5ef60f5ed9d [2022-07-20 06:07:03,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:07:03,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:07:03,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:07:03,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:07:03,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:07:03,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5595124b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03, skipping insertion in model container [2022-07-20 06:07:03,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:07:03,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:07:03,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2022-07-20 06:07:03,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2022-07-20 06:07:03,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2022-07-20 06:07:03,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2022-07-20 06:07:03,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2022-07-20 06:07:03,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2022-07-20 06:07:03,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:07:03,566 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:07:03,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2022-07-20 06:07:03,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2022-07-20 06:07:03,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2022-07-20 06:07:03,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2022-07-20 06:07:03,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2022-07-20 06:07:03,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2022-07-20 06:07:03,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:07:03,650 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:07:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03 WrapperNode [2022-07-20 06:07:03,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:07:03,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:07:03,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:07:03,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:07:03,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,709 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2022-07-20 06:07:03,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:07:03,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:07:03,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:07:03,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:07:03,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:07:03,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:07:03,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:07:03,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:07:03,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (1/1) ... [2022-07-20 06:07:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:07:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:07:03,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 06:07:03,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 06:07:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 06:07:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 06:07:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 06:07:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:07:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:07:03,915 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:07:03,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:07:04,303 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:07:04,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:07:04,309 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-20 06:07:04,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:07:04 BoogieIcfgContainer [2022-07-20 06:07:04,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:07:04,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:07:04,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:07:04,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:07:04,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:07:03" (1/3) ... [2022-07-20 06:07:04,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccab2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:07:04, skipping insertion in model container [2022-07-20 06:07:04,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:07:03" (2/3) ... [2022-07-20 06:07:04,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccab2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:07:04, skipping insertion in model container [2022-07-20 06:07:04,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:07:04" (3/3) ... [2022-07-20 06:07:04,321 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2022-07-20 06:07:04,333 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:07:04,333 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2022-07-20 06:07:04,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:07:04,381 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4acfdf14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63d90cb6 [2022-07-20 06:07:04,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2022-07-20 06:07:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 71 states have (on average 2.23943661971831) internal successors, (159), 135 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:07:04,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:04,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:07:04,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-07-20 06:07:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:04,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384030310] [2022-07-20 06:07:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384030310] [2022-07-20 06:07:04,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384030310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:04,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:04,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:07:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411116901] [2022-07-20 06:07:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:04,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:07:04,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:07:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:07:04,550 INFO L87 Difference]: Start difference. First operand has 136 states, 71 states have (on average 2.23943661971831) internal successors, (159), 135 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:04,703 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2022-07-20 06:07:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:07:04,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-07-20 06:07:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:04,715 INFO L225 Difference]: With dead ends: 153 [2022-07-20 06:07:04,716 INFO L226 Difference]: Without dead ends: 151 [2022-07-20 06:07:04,718 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 [2022-07-20 06:07:04,721 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 110 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:04,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 103 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-20 06:07:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2022-07-20 06:07:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 70 states have (on average 1.9) internal successors, (133), 130 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2022-07-20 06:07:04,760 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 3 [2022-07-20 06:07:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:04,761 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2022-07-20 06:07:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2022-07-20 06:07:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:07:04,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:04,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:07:04,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 06:07:04,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-20 06:07:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:04,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693932013] [2022-07-20 06:07:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:04,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:04,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693932013] [2022-07-20 06:07:04,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693932013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:04,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:04,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:07:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165838204] [2022-07-20 06:07:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:07:04,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:07:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:07:04,808 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:04,909 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2022-07-20 06:07:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:07:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-07-20 06:07:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:04,911 INFO L225 Difference]: With dead ends: 156 [2022-07-20 06:07:04,911 INFO L226 Difference]: Without dead ends: 156 [2022-07-20 06:07:04,911 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 [2022-07-20 06:07:04,912 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 115 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 105 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 [2022-07-20 06:07:04,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 105 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-20 06:07:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2022-07-20 06:07:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.8571428571428572) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2022-07-20 06:07:04,921 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 3 [2022-07-20 06:07:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:04,922 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2022-07-20 06:07:04,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2022-07-20 06:07:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 06:07:04,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:04,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:04,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 06:07:04,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112020, now seen corresponding path program 1 times [2022-07-20 06:07:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152523066] [2022-07-20 06:07:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:05,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:05,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152523066] [2022-07-20 06:07:05,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152523066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:05,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:05,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:07:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400260362] [2022-07-20 06:07:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:05,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:07:05,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:07:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:07:05,017 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:05,262 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2022-07-20 06:07:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:07:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-07-20 06:07:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:05,264 INFO L225 Difference]: With dead ends: 241 [2022-07-20 06:07:05,264 INFO L226 Difference]: Without dead ends: 241 [2022-07-20 06:07:05,264 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 [2022-07-20 06:07:05,265 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 271 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:05,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 113 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:07:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-20 06:07:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 167. [2022-07-20 06:07:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.81651376146789) internal successors, (198), 166 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2022-07-20 06:07:05,276 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 9 [2022-07-20 06:07:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:05,276 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2022-07-20 06:07:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2022-07-20 06:07:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 06:07:05,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:05,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:05,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 06:07:05,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112019, now seen corresponding path program 1 times [2022-07-20 06:07:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093143545] [2022-07-20 06:07:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:05,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093143545] [2022-07-20 06:07:05,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093143545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:05,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:05,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:07:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623571196] [2022-07-20 06:07:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:07:05,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:07:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:07:05,331 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:05,445 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2022-07-20 06:07:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:07:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-07-20 06:07:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:05,446 INFO L225 Difference]: With dead ends: 157 [2022-07-20 06:07:05,446 INFO L226 Difference]: Without dead ends: 157 [2022-07-20 06:07:05,447 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 [2022-07-20 06:07:05,448 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:05,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 74 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-20 06:07:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2022-07-20 06:07:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.5321100917431192) internal successors, (167), 151 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 167 transitions. [2022-07-20 06:07:05,456 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 167 transitions. Word has length 9 [2022-07-20 06:07:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:05,456 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 167 transitions. [2022-07-20 06:07:05,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 167 transitions. [2022-07-20 06:07:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 06:07:05,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:05,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:05,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 06:07:05,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2022-07-20 06:07:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:05,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595025030] [2022-07-20 06:07:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:05,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595025030] [2022-07-20 06:07:05,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595025030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:05,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:05,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:07:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555805982] [2022-07-20 06:07:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:05,532 INFO L87 Difference]: Start difference. First operand 152 states and 167 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:05,676 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2022-07-20 06:07:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:07:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-07-20 06:07:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:05,680 INFO L225 Difference]: With dead ends: 151 [2022-07-20 06:07:05,680 INFO L226 Difference]: Without dead ends: 151 [2022-07-20 06:07:05,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:07:05,682 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 6 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:05,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 278 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-20 06:07:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-20 06:07:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 150 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2022-07-20 06:07:05,688 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 12 [2022-07-20 06:07:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:05,688 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2022-07-20 06:07:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2022-07-20 06:07:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 06:07:05,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:05,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 06:07:05,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2022-07-20 06:07:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:05,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705173515] [2022-07-20 06:07:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705173515] [2022-07-20 06:07:05,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705173515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:05,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:05,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:07:05,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541703154] [2022-07-20 06:07:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:05,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:05,741 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:05,854 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2022-07-20 06:07:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:07:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-07-20 06:07:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:05,856 INFO L225 Difference]: With dead ends: 150 [2022-07-20 06:07:05,857 INFO L226 Difference]: Without dead ends: 150 [2022-07-20 06:07:05,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:07:05,861 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 7 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:05,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 283 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-20 06:07:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-20 06:07:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 149 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2022-07-20 06:07:05,866 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 12 [2022-07-20 06:07:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:05,867 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2022-07-20 06:07:05,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2022-07-20 06:07:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:07:05,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:05,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 06:07:05,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:05,869 INFO L85 PathProgramCache]: Analyzing trace with hash -896738186, now seen corresponding path program 1 times [2022-07-20 06:07:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:05,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660945494] [2022-07-20 06:07:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:05,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:05,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:05,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660945494] [2022-07-20 06:07:05,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660945494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:05,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:05,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:07:05,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062776852] [2022-07-20 06:07:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:05,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:05,961 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:06,071 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2022-07-20 06:07:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:07:06,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-07-20 06:07:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:06,073 INFO L225 Difference]: With dead ends: 149 [2022-07-20 06:07:06,073 INFO L226 Difference]: Without dead ends: 149 [2022-07-20 06:07:06,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:07:06,074 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:06,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 275 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-20 06:07:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-07-20 06:07:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 148 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2022-07-20 06:07:06,078 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 14 [2022-07-20 06:07:06,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:06,078 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2022-07-20 06:07:06,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2022-07-20 06:07:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:07:06,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:06,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:06,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 06:07:06,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash -896738185, now seen corresponding path program 1 times [2022-07-20 06:07:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169832411] [2022-07-20 06:07:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169832411] [2022-07-20 06:07:06,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169832411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:06,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:06,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:07:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170300092] [2022-07-20 06:07:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:06,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:06,199 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:06,322 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2022-07-20 06:07:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:07:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-07-20 06:07:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:06,324 INFO L225 Difference]: With dead ends: 148 [2022-07-20 06:07:06,324 INFO L226 Difference]: Without dead ends: 148 [2022-07-20 06:07:06,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:07:06,325 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 4 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:06,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 273 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-07-20 06:07:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-07-20 06:07:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 147 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2022-07-20 06:07:06,330 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 14 [2022-07-20 06:07:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:06,330 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2022-07-20 06:07:06,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2022-07-20 06:07:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 06:07:06,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:06,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:06,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 06:07:06,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2022-07-20 06:07:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:06,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725981789] [2022-07-20 06:07:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:06,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725981789] [2022-07-20 06:07:06,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725981789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:06,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:06,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 06:07:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822523044] [2022-07-20 06:07:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:07:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:07:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:07:06,472 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:06,690 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2022-07-20 06:07:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:07:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 16 [2022-07-20 06:07:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:06,692 INFO L225 Difference]: With dead ends: 152 [2022-07-20 06:07:06,692 INFO L226 Difference]: Without dead ends: 152 [2022-07-20 06:07:06,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-20 06:07:06,692 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:06,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 188 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:07:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-20 06:07:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2022-07-20 06:07:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 146 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2022-07-20 06:07:06,696 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 16 [2022-07-20 06:07:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:06,696 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2022-07-20 06:07:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2022-07-20 06:07:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 06:07:06,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:06,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 06:07:06,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:06,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2022-07-20 06:07:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:06,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372715781] [2022-07-20 06:07:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:06,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372715781] [2022-07-20 06:07:06,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372715781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:06,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:06,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:07:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129770313] [2022-07-20 06:07:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:06,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:07:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:06,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:07:06,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:07:06,877 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:07,332 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2022-07-20 06:07:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 06:07:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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 16 [2022-07-20 06:07:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:07,333 INFO L225 Difference]: With dead ends: 149 [2022-07-20 06:07:07,333 INFO L226 Difference]: Without dead ends: 149 [2022-07-20 06:07:07,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-07-20 06:07:07,334 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 182 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:07,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 282 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-20 06:07:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2022-07-20 06:07:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 122 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2022-07-20 06:07:07,337 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2022-07-20 06:07:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:07,337 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2022-07-20 06:07:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2022-07-20 06:07:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:07:07,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:07,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 06:07:07,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -30672293, now seen corresponding path program 1 times [2022-07-20 06:07:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325478730] [2022-07-20 06:07:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:07,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325478730] [2022-07-20 06:07:07,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325478730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:07,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:07,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:07:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846657141] [2022-07-20 06:07:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:07:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:07:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:07:07,428 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:07,636 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2022-07-20 06:07:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:07:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-07-20 06:07:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:07,637 INFO L225 Difference]: With dead ends: 126 [2022-07-20 06:07:07,637 INFO L226 Difference]: Without dead ends: 126 [2022-07-20 06:07:07,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:07:07,638 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 63 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:07,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 253 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-20 06:07:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2022-07-20 06:07:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2022-07-20 06:07:07,641 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 17 [2022-07-20 06:07:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:07,641 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2022-07-20 06:07:07,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2022-07-20 06:07:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:07:07,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:07,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 06:07:07,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:07,643 INFO L85 PathProgramCache]: Analyzing trace with hash -30672292, now seen corresponding path program 1 times [2022-07-20 06:07:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:07,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077463274] [2022-07-20 06:07:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:07,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:07,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077463274] [2022-07-20 06:07:07,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077463274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:07,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:07,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:07:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077231579] [2022-07-20 06:07:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:07,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:07:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:07:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:07:07,747 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:07,968 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2022-07-20 06:07:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:07:07,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-07-20 06:07:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:07,970 INFO L225 Difference]: With dead ends: 125 [2022-07-20 06:07:07,970 INFO L226 Difference]: Without dead ends: 125 [2022-07-20 06:07:07,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:07:07,971 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:07,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 263 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:07:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-20 06:07:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2022-07-20 06:07:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-07-20 06:07:07,974 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 17 [2022-07-20 06:07:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:07,974 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-07-20 06:07:07,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-07-20 06:07:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 06:07:07,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:07,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 06:07:07,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -3964873, now seen corresponding path program 1 times [2022-07-20 06:07:07,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:07,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278625422] [2022-07-20 06:07:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:07,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:08,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278625422] [2022-07-20 06:07:08,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278625422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:08,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:08,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:07:08,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270156610] [2022-07-20 06:07:08,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:08,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:07:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:07:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:07:08,063 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 6 states, 6 states have (on average 3.0) 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) [2022-07-20 06:07:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:08,146 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2022-07-20 06:07:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:07:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) 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 [2022-07-20 06:07:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:08,147 INFO L225 Difference]: With dead ends: 123 [2022-07-20 06:07:08,148 INFO L226 Difference]: Without dead ends: 123 [2022-07-20 06:07:08,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:07:08,149 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 153 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:08,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 113 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-20 06:07:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2022-07-20 06:07:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 118 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2022-07-20 06:07:08,154 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 18 [2022-07-20 06:07:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:08,155 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2022-07-20 06:07:08,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) 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) [2022-07-20 06:07:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2022-07-20 06:07:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 06:07:08,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:08,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 06:07:08,159 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1069806106, now seen corresponding path program 1 times [2022-07-20 06:07:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7228289] [2022-07-20 06:07:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:08,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7228289] [2022-07-20 06:07:08,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7228289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:08,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:08,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:07:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461179551] [2022-07-20 06:07:08,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:07:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:07:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:07:08,204 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:08,277 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2022-07-20 06:07:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:07:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-07-20 06:07:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:08,278 INFO L225 Difference]: With dead ends: 181 [2022-07-20 06:07:08,279 INFO L226 Difference]: Without dead ends: 181 [2022-07-20 06:07:08,279 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 [2022-07-20 06:07:08,281 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 177 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:08,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 135 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-20 06:07:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 117. [2022-07-20 06:07:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2022-07-20 06:07:08,285 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 20 [2022-07-20 06:07:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:08,285 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2022-07-20 06:07:08,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2022-07-20 06:07:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-20 06:07:08,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:08,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:08,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 06:07:08,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 684226449, now seen corresponding path program 1 times [2022-07-20 06:07:08,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:08,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499679063] [2022-07-20 06:07:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:08,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499679063] [2022-07-20 06:07:08,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499679063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:08,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:08,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 06:07:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483515091] [2022-07-20 06:07:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 06:07:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 06:07:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:08,547 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:08,949 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2022-07-20 06:07:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 06:07:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 25 [2022-07-20 06:07:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:08,951 INFO L225 Difference]: With dead ends: 225 [2022-07-20 06:07:08,951 INFO L226 Difference]: Without dead ends: 225 [2022-07-20 06:07:08,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-07-20 06:07:08,952 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 426 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:08,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 313 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-07-20 06:07:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 133. [2022-07-20 06:07:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 132 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2022-07-20 06:07:08,955 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 25 [2022-07-20 06:07:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:08,956 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2022-07-20 06:07:08,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2022-07-20 06:07:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-20 06:07:08,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:08,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 06:07:08,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 684193678, now seen corresponding path program 1 times [2022-07-20 06:07:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:08,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323111842] [2022-07-20 06:07:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:08,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323111842] [2022-07-20 06:07:08,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323111842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:08,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:08,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:07:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661151780] [2022-07-20 06:07:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:09,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:09,001 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:09,088 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2022-07-20 06:07:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:07:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2022-07-20 06:07:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:09,089 INFO L225 Difference]: With dead ends: 131 [2022-07-20 06:07:09,089 INFO L226 Difference]: Without dead ends: 131 [2022-07-20 06:07:09,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:07:09,090 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 8 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:09,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 236 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-20 06:07:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-20 06:07:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 106 states have (on average 1.330188679245283) internal successors, (141), 130 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2022-07-20 06:07:09,093 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 25 [2022-07-20 06:07:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:09,094 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2022-07-20 06:07:09,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2022-07-20 06:07:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 06:07:09,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:09,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:09,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 06:07:09,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1096862923, now seen corresponding path program 1 times [2022-07-20 06:07:09,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:09,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376873276] [2022-07-20 06:07:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:09,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376873276] [2022-07-20 06:07:09,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376873276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:09,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:09,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 06:07:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449319565] [2022-07-20 06:07:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:09,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 06:07:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 06:07:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:09,236 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2022-07-20 06:07:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:09,669 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2022-07-20 06:07:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 06:07:09,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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 [2022-07-20 06:07:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:09,671 INFO L225 Difference]: With dead ends: 185 [2022-07-20 06:07:09,671 INFO L226 Difference]: Without dead ends: 185 [2022-07-20 06:07:09,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-07-20 06:07:09,671 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 178 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 340 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-20 06:07:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 137. [2022-07-20 06:07:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 136 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2022-07-20 06:07:09,675 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 28 [2022-07-20 06:07:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:09,675 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2022-07-20 06:07:09,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2022-07-20 06:07:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2022-07-20 06:07:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 06:07:09,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:09,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:09,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 06:07:09,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1096862922, now seen corresponding path program 1 times [2022-07-20 06:07:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:09,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21223051] [2022-07-20 06:07:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:09,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:09,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21223051] [2022-07-20 06:07:09,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21223051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:09,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:09,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 06:07:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014071204] [2022-07-20 06:07:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:09,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 06:07:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 06:07:09,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:09,878 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2022-07-20 06:07:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:10,317 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2022-07-20 06:07:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 06:07:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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 [2022-07-20 06:07:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:10,318 INFO L225 Difference]: With dead ends: 217 [2022-07-20 06:07:10,318 INFO L226 Difference]: Without dead ends: 217 [2022-07-20 06:07:10,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-07-20 06:07:10,319 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 217 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:10,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 341 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-20 06:07:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2022-07-20 06:07:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.3125) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2022-07-20 06:07:10,323 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 28 [2022-07-20 06:07:10,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:10,324 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2022-07-20 06:07:10,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2022-07-20 06:07:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2022-07-20 06:07:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 06:07:10,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:10,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:10,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 06:07:10,325 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:10,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1818276907, now seen corresponding path program 1 times [2022-07-20 06:07:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:10,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105475755] [2022-07-20 06:07:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:10,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105475755] [2022-07-20 06:07:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105475755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:10,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 06:07:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749993754] [2022-07-20 06:07:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 06:07:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 06:07:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:07:10,587 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:11,210 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2022-07-20 06:07:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 06:07:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 [2022-07-20 06:07:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:11,212 INFO L225 Difference]: With dead ends: 215 [2022-07-20 06:07:11,212 INFO L226 Difference]: Without dead ends: 215 [2022-07-20 06:07:11,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-07-20 06:07:11,213 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 301 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 477 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 06:07:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-20 06:07:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 138. [2022-07-20 06:07:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 137 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2022-07-20 06:07:11,216 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 30 [2022-07-20 06:07:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:11,216 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2022-07-20 06:07:11,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2022-07-20 06:07:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-20 06:07:11,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:11,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 06:07:11,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash -245371248, now seen corresponding path program 1 times [2022-07-20 06:07:11,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176341939] [2022-07-20 06:07:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:11,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176341939] [2022-07-20 06:07:11,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176341939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:11,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:11,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:07:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577612706] [2022-07-20 06:07:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:07:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:07:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:07:11,258 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:11,338 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2022-07-20 06:07:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:07:11,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2022-07-20 06:07:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:11,340 INFO L225 Difference]: With dead ends: 136 [2022-07-20 06:07:11,340 INFO L226 Difference]: Without dead ends: 136 [2022-07-20 06:07:11,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:07:11,341 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:11,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 211 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-20 06:07:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-07-20 06:07:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 135 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) [2022-07-20 06:07:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2022-07-20 06:07:11,344 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 36 [2022-07-20 06:07:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:11,344 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2022-07-20 06:07:11,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2022-07-20 06:07:11,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-20 06:07:11,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:11,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 06:07:11,346 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:11,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash 984809453, now seen corresponding path program 1 times [2022-07-20 06:07:11,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:11,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596188140] [2022-07-20 06:07:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596188140] [2022-07-20 06:07:11,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596188140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:11,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:11,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:07:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349932912] [2022-07-20 06:07:11,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:07:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:07:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:07:11,403 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:11,497 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2022-07-20 06:07:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:07:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2022-07-20 06:07:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:11,498 INFO L225 Difference]: With dead ends: 152 [2022-07-20 06:07:11,498 INFO L226 Difference]: Without dead ends: 152 [2022-07-20 06:07:11,498 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 [2022-07-20 06:07:11,499 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:11,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:07:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-20 06:07:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 138. [2022-07-20 06:07:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 137 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2022-07-20 06:07:11,502 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 37 [2022-07-20 06:07:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:11,502 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2022-07-20 06:07:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2022-07-20 06:07:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-20 06:07:11,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:11,504 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 06:07:11,504 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash -27234752, now seen corresponding path program 1 times [2022-07-20 06:07:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:11,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791700786] [2022-07-20 06:07:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:11,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791700786] [2022-07-20 06:07:11,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791700786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:07:11,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846078141] [2022-07-20 06:07:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:11,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:07:11,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:07:11,933 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) [2022-07-20 06:07:11,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 06:07:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:12,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-20 06:07:12,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:07:12,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:07:12,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-07-20 06:07:12,305 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-20 06:07:12,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-07-20 06:07:12,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-20 06:07:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:07:12,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:07:12,533 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:12,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-07-20 06:07:12,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2022-07-20 06:07:12,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-20 06:07:12,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-07-20 06:07:12,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-07-20 06:07:12,716 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-20 06:07:12,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-20 06:07:12,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-07-20 06:07:12,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-20 06:07:12,855 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:12,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-07-20 06:07:12,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-20 06:07:12,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 24 treesize of output 12 [2022-07-20 06:07:12,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-07-20 06:07:12,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-20 06:07:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:12,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:07:12,983 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_874) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2022-07-20 06:07:12,996 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_874) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2022-07-20 06:07:13,007 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_872 (Array Int Int)) (v_ArrVal_874 (Array Int Int)) (v_ArrVal_873 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7#1.base| v_ArrVal_872) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem7#1.base| v_ArrVal_873) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_874) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2022-07-20 06:07:13,014 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_872 (Array Int Int)) (v_ArrVal_874 (Array Int Int)) (v_ArrVal_873 (Array Int Int))) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_872) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_873) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_874)) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2022-07-20 06:07:13,027 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:13,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-07-20 06:07:13,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-07-20 06:07:13,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-07-20 06:07:13,095 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_869 (Array Int Int)) (v_arrayElimCell_19 Int) (v_ArrVal_872 (Array Int Int)) (v_ArrVal_874 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_869)) (.cse2 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) (.cse0 (= |c_ULTIMATE.start_main_#t~malloc6#1.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (or (and (not .cse0) (= (select (select (store .cse1 |c_ULTIMATE.start_main_#t~malloc6#1.base| v_ArrVal_874) |c_ULTIMATE.start_main_~head~0#1.base|) .cse2) 0)) (and (= (select (select (store (store .cse1 |c_ULTIMATE.start_main_#t~malloc6#1.base| v_ArrVal_872) v_arrayElimCell_19 v_ArrVal_874) |c_ULTIMATE.start_main_~head~0#1.base|) .cse2) 0) .cse0)))) is different from false [2022-07-20 06:07:14,550 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:14,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 89 [2022-07-20 06:07:14,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 157 [2022-07-20 06:07:14,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 151 [2022-07-20 06:07:23,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:23,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2022-07-20 06:07:23,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 92 [2022-07-20 06:07:23,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2022-07-20 06:07:46,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:46,721 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:46,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 84 [2022-07-20 06:07:46,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:46,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2372 treesize of output 2252 [2022-07-20 06:07:46,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2239 treesize of output 1983 [2022-07-20 06:07:46,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1983 treesize of output 1911 [2022-07-20 06:07:46,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1911 treesize of output 1763 [2022-07-20 06:07:46,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:46,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 06:07:47,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-07-20 06:07:47,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:47,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 142 [2022-07-20 06:07:47,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 126 [2022-07-20 06:07:47,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2022-07-20 06:07:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:47,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846078141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:07:47,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 06:07:47,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 42 [2022-07-20 06:07:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471400035] [2022-07-20 06:07:47,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 06:07:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-20 06:07:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-20 06:07:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1091, Unknown=31, NotChecked=370, Total=1722 [2022-07-20 06:07:47,128 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:48,697 INFO L93 Difference]: Finished difference Result 359 states and 371 transitions. [2022-07-20 06:07:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-20 06:07:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 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 37 [2022-07-20 06:07:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:48,701 INFO L225 Difference]: With dead ends: 359 [2022-07-20 06:07:48,702 INFO L226 Difference]: Without dead ends: 359 [2022-07-20 06:07:48,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=535, Invalid=2634, Unknown=43, NotChecked=570, Total=3782 [2022-07-20 06:07:48,704 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 518 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2416 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:48,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1462 Invalid, 3619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1137 Invalid, 0 Unknown, 2416 Unchecked, 0.6s Time] [2022-07-20 06:07:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-20 06:07:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 178. [2022-07-20 06:07:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 154 states have (on average 1.2337662337662338) internal successors, (190), 177 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 190 transitions. [2022-07-20 06:07:48,708 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 190 transitions. Word has length 37 [2022-07-20 06:07:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:48,709 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 190 transitions. [2022-07-20 06:07:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 190 transitions. [2022-07-20 06:07:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-20 06:07:48,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:48,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:48,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 06:07:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-20 06:07:48,936 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash 421565270, now seen corresponding path program 1 times [2022-07-20 06:07:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:48,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558522561] [2022-07-20 06:07:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:48,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:49,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558522561] [2022-07-20 06:07:49,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558522561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:49,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:49,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 06:07:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305447836] [2022-07-20 06:07:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:49,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 06:07:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 06:07:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:49,098 INFO L87 Difference]: Start difference. First operand 178 states and 190 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:49,483 INFO L93 Difference]: Finished difference Result 237 states and 244 transitions. [2022-07-20 06:07:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 06:07:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 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 38 [2022-07-20 06:07:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:49,485 INFO L225 Difference]: With dead ends: 237 [2022-07-20 06:07:49,485 INFO L226 Difference]: Without dead ends: 237 [2022-07-20 06:07:49,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-07-20 06:07:49,485 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 203 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:49,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 405 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-20 06:07:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 187. [2022-07-20 06:07:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 186 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 200 transitions. [2022-07-20 06:07:49,489 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 200 transitions. Word has length 38 [2022-07-20 06:07:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:49,489 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 200 transitions. [2022-07-20 06:07:49,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 200 transitions. [2022-07-20 06:07:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 06:07:49,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:49,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 06:07:49,490 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 183621750, now seen corresponding path program 1 times [2022-07-20 06:07:49,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390624099] [2022-07-20 06:07:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390624099] [2022-07-20 06:07:49,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390624099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:49,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:49,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 06:07:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170609608] [2022-07-20 06:07:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 06:07:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 06:07:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:49,676 INFO L87 Difference]: Start difference. First operand 187 states and 200 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:50,081 INFO L93 Difference]: Finished difference Result 236 states and 243 transitions. [2022-07-20 06:07:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 06:07:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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 39 [2022-07-20 06:07:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:50,082 INFO L225 Difference]: With dead ends: 236 [2022-07-20 06:07:50,083 INFO L226 Difference]: Without dead ends: 236 [2022-07-20 06:07:50,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-07-20 06:07:50,083 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 215 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:50,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 324 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:07:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-20 06:07:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 188. [2022-07-20 06:07:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 164 states have (on average 1.225609756097561) internal successors, (201), 187 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2022-07-20 06:07:50,087 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 39 [2022-07-20 06:07:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:50,088 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2022-07-20 06:07:50,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2022-07-20 06:07:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 06:07:50,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:50,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:50,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 06:07:50,089 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1509086814, now seen corresponding path program 1 times [2022-07-20 06:07:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:50,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364330022] [2022-07-20 06:07:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364330022] [2022-07-20 06:07:50,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364330022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:07:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93845486] [2022-07-20 06:07:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:07:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:07:50,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 06:07:50,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 06:07:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:50,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-20 06:07:50,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:07:50,574 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 06:07:50,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-20 06:07:50,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-20 06:07:50,682 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:50,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-07-20 06:07:50,719 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:50,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-07-20 06:07:51,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:51,013 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-07-20 06:07:51,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 14 [2022-07-20 06:07:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:51,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:07:51,076 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-07-20 06:07:51,235 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_63| Int) (v_ArrVal_1064 (Array Int Int))) (or (let ((.cse1 (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1064) |c_ULTIMATE.start_main_~head~0#1.base|))) (let ((.cse0 (select .cse1 |v_ULTIMATE.start_main_~x~0#1.offset_63|))) (and (not (= |c_ULTIMATE.start_main_~head~0#1.base| .cse0)) (= (select .cse1 |c_ULTIMATE.start_main_~head~0#1.offset|) .cse0)))) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_63| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_63|)))) is different from false [2022-07-20 06:07:51,532 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2022-07-20 06:07:51,541 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 128 [2022-07-20 06:07:51,552 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 111 [2022-07-20 06:07:51,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2022-07-20 06:07:51,645 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 46 [2022-07-20 06:07:51,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:51,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:51,655 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-20 06:07:51,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 27 [2022-07-20 06:07:51,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 06:07:51,845 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:51,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 127 [2022-07-20 06:07:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:52,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93845486] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:07:52,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 06:07:52,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 19] total 40 [2022-07-20 06:07:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135669377] [2022-07-20 06:07:52,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 06:07:52,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-20 06:07:52,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-20 06:07:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1352, Unknown=28, NotChecked=76, Total=1640 [2022-07-20 06:07:52,062 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:52,824 INFO L93 Difference]: Finished difference Result 218 states and 227 transitions. [2022-07-20 06:07:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-20 06:07:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 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 39 [2022-07-20 06:07:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:52,826 INFO L225 Difference]: With dead ends: 218 [2022-07-20 06:07:52,826 INFO L226 Difference]: Without dead ends: 218 [2022-07-20 06:07:52,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=404, Invalid=2122, Unknown=28, NotChecked=98, Total=2652 [2022-07-20 06:07:52,827 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 310 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:52,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1090 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1009 Invalid, 0 Unknown, 549 Unchecked, 0.5s Time] [2022-07-20 06:07:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-20 06:07:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2022-07-20 06:07:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 170 states have (on average 1.223529411764706) internal successors, (208), 193 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2022-07-20 06:07:52,831 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 39 [2022-07-20 06:07:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:52,831 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2022-07-20 06:07:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:52,832 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2022-07-20 06:07:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 06:07:52,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:52,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:52,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-20 06:07:53,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-20 06:07:53,044 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1509086815, now seen corresponding path program 1 times [2022-07-20 06:07:53,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:53,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750761483] [2022-07-20 06:07:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750761483] [2022-07-20 06:07:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750761483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:07:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166962866] [2022-07-20 06:07:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:53,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:07:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:07:53,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 06:07:53,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 06:07:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:53,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-20 06:07:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:07:53,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:53,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-07-20 06:07:53,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:53,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:53,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 19 [2022-07-20 06:07:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:53,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:07:53,585 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:53,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2022-07-20 06:07:53,678 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-20 06:07:53,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-20 06:07:53,690 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-20 06:07:53,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-07-20 06:07:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:53,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166962866] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:07:53,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 06:07:53,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2022-07-20 06:07:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163757034] [2022-07-20 06:07:53,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 06:07:53,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-20 06:07:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-20 06:07:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-20 06:07:53,791 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand has 19 states, 18 states have (on average 5.5) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:54,154 INFO L93 Difference]: Finished difference Result 237 states and 250 transitions. [2022-07-20 06:07:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 06:07:54,154 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.5) internal successors, (99), 19 states have internal predecessors, (99), 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 39 [2022-07-20 06:07:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:54,155 INFO L225 Difference]: With dead ends: 237 [2022-07-20 06:07:54,155 INFO L226 Difference]: Without dead ends: 237 [2022-07-20 06:07:54,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-07-20 06:07:54,156 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 124 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:54,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 624 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 466 Invalid, 0 Unknown, 133 Unchecked, 0.3s Time] [2022-07-20 06:07:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-20 06:07:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 207. [2022-07-20 06:07:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 206 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 226 transitions. [2022-07-20 06:07:54,160 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 226 transitions. Word has length 39 [2022-07-20 06:07:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:54,160 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 226 transitions. [2022-07-20 06:07:54,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.5) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 226 transitions. [2022-07-20 06:07:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 06:07:54,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:54,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:54,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 06:07:54,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:07:54,361 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1397307224, now seen corresponding path program 1 times [2022-07-20 06:07:54,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233683623] [2022-07-20 06:07:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:54,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:54,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233683623] [2022-07-20 06:07:54,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233683623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:07:54,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:07:54,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:07:54,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139834662] [2022-07-20 06:07:54,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:07:54,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:07:54,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:07:54,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:07:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:07:54,424 INFO L87 Difference]: Start difference. First operand 207 states and 226 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:07:54,669 INFO L93 Difference]: Finished difference Result 230 states and 241 transitions. [2022-07-20 06:07:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:07:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 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 40 [2022-07-20 06:07:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:07:54,670 INFO L225 Difference]: With dead ends: 230 [2022-07-20 06:07:54,671 INFO L226 Difference]: Without dead ends: 230 [2022-07-20 06:07:54,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:07:54,671 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 87 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:07:54,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 306 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:07:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-20 06:07:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 214. [2022-07-20 06:07:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 213 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) [2022-07-20 06:07:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 235 transitions. [2022-07-20 06:07:54,675 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 235 transitions. Word has length 40 [2022-07-20 06:07:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:07:54,675 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 235 transitions. [2022-07-20 06:07:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:07:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 235 transitions. [2022-07-20 06:07:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 06:07:54,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:07:54,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:07:54,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 06:07:54,676 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2022-07-20 06:07:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:07:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash 402357860, now seen corresponding path program 1 times [2022-07-20 06:07:54,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:07:54,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446074395] [2022-07-20 06:07:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:07:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:07:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446074395] [2022-07-20 06:07:55,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446074395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:07:55,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203924873] [2022-07-20 06:07:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:07:55,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:07:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:07:55,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 06:07:55,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 06:07:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:07:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-20 06:07:55,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:07:55,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:07:55,508 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 06:07:55,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-20 06:07:55,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-20 06:07:55,628 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:55,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-07-20 06:07:55,698 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:55,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 22 [2022-07-20 06:07:55,757 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 06:07:55,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 22 [2022-07-20 06:07:55,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:07:55,775 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-20 06:07:55,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-20 06:07:55,809 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-20 06:07:55,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-07-20 06:07:55,894 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-07-20 06:07:55,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 38 [2022-07-20 06:07:55,960 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-07-20 06:07:55,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 53 [2022-07-20 06:07:56,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:07:56,090 INFO L356 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2022-07-20 06:07:56,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 27 [2022-07-20 06:07:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:07:56,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:07:56,405 INFO L356 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2022-07-20 06:07:56,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2022-07-20 06:07:56,415 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int) (v_ArrVal_1347 (Array Int Int)) (v_ArrVal_1346 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_75| Int)) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_75| |c_ULTIMATE.start_main_~head~0#1.offset|)) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_#t~malloc6#1.base|)) |c_ULTIMATE.start_main_#t~malloc6#1.base| v_ArrVal_1346))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1347)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_75|)))) is different from false [2022-07-20 06:07:56,482 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:56,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-07-20 06:07:56,492 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int) (v_arrayElimArr_7 (Array Int Int)) (v_ArrVal_1347 (Array Int Int)) (v_ArrVal_1346 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_75| Int)) (let ((.cse0 (select v_arrayElimArr_7 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_75| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select |c_#valid| .cse0) 0)) (= (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_7) .cse0 v_ArrVal_1346))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1347)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_75|))))) is different from false [2022-07-20 06:07:56,878 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:56,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 86 [2022-07-20 06:07:56,901 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:56,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11906 treesize of output 10149 [2022-07-20 06:07:56,964 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:56,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10134 treesize of output 9268 [2022-07-20 06:07:57,010 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:57,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9246 treesize of output 7556 [2022-07-20 06:07:57,065 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:07:57,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7542 treesize of output 6910 [2022-07-20 06:07:57,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6902 treesize of output 6646 [2022-07-20 06:07:57,212 INFO L356 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2022-07-20 06:07:57,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61