./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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-simple-white-blue-2.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 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:40:08,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:40:08,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:40:08,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:40:08,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:40:08,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:40:08,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:40:08,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:40:08,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:40:08,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:40:08,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:40:08,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:40:08,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:40:08,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:40:08,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:40:08,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:40:08,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:40:08,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:40:08,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:40:08,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:40:08,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:40:08,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:40:08,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:40:08,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:40:08,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:40:08,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:40:08,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:40:08,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:40:08,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:40:08,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:40:08,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:40:08,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:40:08,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:40:08,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:40:08,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:40:08,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:40:08,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:40:08,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:40:08,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:40:08,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:40:08,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:40:08,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:40:08,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:40:08,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:40:08,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:40:08,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:40:08,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:40:08,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:40:08,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:40:08,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:40:08,696 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:40:08,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:40:08,697 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:40:08,697 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:40:08,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:40:08,698 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:40:08,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:40:08,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:40:08,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:40:08,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:40:08,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:40:08,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:40:08,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:40:08,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:40:08,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:40:08,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:40:08,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:40:08,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e [2021-12-22 16:40:08,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:40:08,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:40:08,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:40:08,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:40:08,910 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:40:08,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2021-12-22 16:40:08,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180baf3e2/d42007f7daf6411f837c28eae6c0acd1/FLAG794db48ac [2021-12-22 16:40:09,278 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:40:09,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2021-12-22 16:40:09,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180baf3e2/d42007f7daf6411f837c28eae6c0acd1/FLAG794db48ac [2021-12-22 16:40:09,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180baf3e2/d42007f7daf6411f837c28eae6c0acd1 [2021-12-22 16:40:09,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:40:09,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:40:09,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:40:09,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:40:09,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:40:09,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:40:09" (1/1) ... [2021-12-22 16:40:09,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199eaf6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:09, skipping insertion in model container [2021-12-22 16:40:09,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:40:09" (1/1) ... [2021-12-22 16:40:09,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:40:09,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:40:09,958 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-simple-white-blue-2.i[22778,22791] [2021-12-22 16:40:09,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:40:09,976 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:40:10,023 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-simple-white-blue-2.i[22778,22791] [2021-12-22 16:40:10,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:40:10,044 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:40:10,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10 WrapperNode [2021-12-22 16:40:10,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:40:10,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:40:10,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:40:10,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:40:10,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,091 INFO L137 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2021-12-22 16:40:10,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:40:10,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:40:10,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:40:10,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:40:10,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:40:10,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:40:10,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:40:10,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:40:10,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (1/1) ... [2021-12-22 16:40:10,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:40:10,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:10,173 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) [2021-12-22 16:40:10,179 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 [2021-12-22 16:40:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:40:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:40:10,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:40:10,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:40:10,308 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:40:10,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:40:10,606 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:40:10,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:40:10,610 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-22 16:40:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:40:10 BoogieIcfgContainer [2021-12-22 16:40:10,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:40:10,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:40:10,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:40:10,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:40:10,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:40:09" (1/3) ... [2021-12-22 16:40:10,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467b27a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:40:10, skipping insertion in model container [2021-12-22 16:40:10,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:40:10" (2/3) ... [2021-12-22 16:40:10,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467b27a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:40:10, skipping insertion in model container [2021-12-22 16:40:10,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:40:10" (3/3) ... [2021-12-22 16:40:10,617 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2021-12-22 16:40:10,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:40:10,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-12-22 16:40:10,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:40:10,650 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:40:10,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-12-22 16:40:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 122 states have internal predecessors, (139), 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) [2021-12-22 16:40:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:40:10,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:10,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:40:10,666 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-22 16:40:10,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:10,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433524996] [2021-12-22 16:40:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:10,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:10,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433524996] [2021-12-22 16:40:10,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433524996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:10,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:10,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:40:10,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477664120] [2021-12-22 16:40:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:10,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:40:10,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:40:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:40:10,821 INFO L87 Difference]: Start difference. First operand has 123 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 122 states have internal predecessors, (139), 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) [2021-12-22 16:40:10,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:10,968 INFO L93 Difference]: Finished difference Result 150 states and 159 transitions. [2021-12-22 16:40:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:40:10,970 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 [2021-12-22 16:40:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:10,976 INFO L225 Difference]: With dead ends: 150 [2021-12-22 16:40:10,976 INFO L226 Difference]: Without dead ends: 146 [2021-12-22 16:40:10,977 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:40:10,979 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 109 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:10,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 120 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-22 16:40:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 117. [2021-12-22 16:40:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 116 states have internal predecessors, (124), 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) [2021-12-22 16:40:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-12-22 16:40:11,005 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 3 [2021-12-22 16:40:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-12-22 16:40:11,005 INFO L471 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) [2021-12-22 16:40:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-12-22 16:40:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:40:11,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:11,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:40:11,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:40:11,006 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-22 16:40:11,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:11,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245004575] [2021-12-22 16:40:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:11,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:11,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:11,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245004575] [2021-12-22 16:40:11,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245004575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:11,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:11,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:40:11,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421480911] [2021-12-22 16:40:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:11,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:40:11,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:40:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:40:11,062 INFO L87 Difference]: Start difference. First operand 117 states and 124 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) [2021-12-22 16:40:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:11,172 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-12-22 16:40:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:40:11,172 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 [2021-12-22 16:40:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:11,174 INFO L225 Difference]: With dead ends: 143 [2021-12-22 16:40:11,177 INFO L226 Difference]: Without dead ends: 143 [2021-12-22 16:40:11,177 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:40:11,179 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 104 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:11,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-22 16:40:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2021-12-22 16:40:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 113 states have internal predecessors, (121), 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) [2021-12-22 16:40:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2021-12-22 16:40:11,191 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 3 [2021-12-22 16:40:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2021-12-22 16:40:11,192 INFO L471 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) [2021-12-22 16:40:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2021-12-22 16:40:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:40:11,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:11,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:11,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:40:11,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2021-12-22 16:40:11,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633317001] [2021-12-22 16:40:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:11,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:11,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:11,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633317001] [2021-12-22 16:40:11,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633317001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:11,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:11,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:40:11,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431248245] [2021-12-22 16:40:11,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:11,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:40:11,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:40:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:40:11,262 INFO L87 Difference]: Start difference. First operand 114 states and 121 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) [2021-12-22 16:40:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:11,371 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2021-12-22 16:40:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:40:11,371 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 [2021-12-22 16:40:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:11,373 INFO L225 Difference]: With dead ends: 114 [2021-12-22 16:40:11,373 INFO L226 Difference]: Without dead ends: 114 [2021-12-22 16:40:11,374 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:40:11,378 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 161 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:11,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 47 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-22 16:40:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-12-22 16:40:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 105 states have internal predecessors, (119), 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) [2021-12-22 16:40:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-12-22 16:40:11,384 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 9 [2021-12-22 16:40:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:11,384 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-12-22 16:40:11,384 INFO L471 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) [2021-12-22 16:40:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-12-22 16:40:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:40:11,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:11,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:11,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:40:11,385 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2021-12-22 16:40:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697074281] [2021-12-22 16:40:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:11,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:11,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:11,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697074281] [2021-12-22 16:40:11,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697074281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:11,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:11,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:40:11,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369523339] [2021-12-22 16:40:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:11,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:40:11,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:40:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:40:11,493 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-22 16:40:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:11,698 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2021-12-22 16:40:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:40:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 [2021-12-22 16:40:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:11,700 INFO L225 Difference]: With dead ends: 149 [2021-12-22 16:40:11,700 INFO L226 Difference]: Without dead ends: 149 [2021-12-22 16:40:11,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:40:11,701 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 349 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:11,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 62 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-22 16:40:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 126. [2021-12-22 16:40:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 92 states have (on average 1.565217391304348) internal successors, (144), 125 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) [2021-12-22 16:40:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2021-12-22 16:40:11,706 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 9 [2021-12-22 16:40:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:11,707 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2021-12-22 16:40:11,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-22 16:40:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2021-12-22 16:40:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 16:40:11,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:11,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:11,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:40:11,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2021-12-22 16:40:11,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:11,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255661397] [2021-12-22 16:40:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:11,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:11,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255661397] [2021-12-22 16:40:11,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255661397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:11,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:11,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:40:11,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74191793] [2021-12-22 16:40:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:11,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:40:11,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:40:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:11,786 INFO L87 Difference]: Start difference. First operand 126 states and 144 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) [2021-12-22 16:40:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:11,910 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2021-12-22 16:40:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:40:11,910 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 [2021-12-22 16:40:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:11,912 INFO L225 Difference]: With dead ends: 125 [2021-12-22 16:40:11,912 INFO L226 Difference]: Without dead ends: 125 [2021-12-22 16:40:11,912 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:40:11,912 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:11,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-22 16:40:11,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-22 16:40:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 124 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2021-12-22 16:40:11,917 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 12 [2021-12-22 16:40:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:11,918 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2021-12-22 16:40:11,918 INFO L471 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) [2021-12-22 16:40:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2021-12-22 16:40:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 16:40:11,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:11,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:11,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:40:11,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2021-12-22 16:40:11,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:11,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099354833] [2021-12-22 16:40:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:11,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:11,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:11,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099354833] [2021-12-22 16:40:11,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099354833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:11,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:11,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:40:11,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121452250] [2021-12-22 16:40:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:11,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:40:11,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:40:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:11,954 INFO L87 Difference]: Start difference. First operand 125 states and 142 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) [2021-12-22 16:40:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:12,044 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2021-12-22 16:40:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:40:12,044 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 [2021-12-22 16:40:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:12,045 INFO L225 Difference]: With dead ends: 124 [2021-12-22 16:40:12,045 INFO L226 Difference]: Without dead ends: 124 [2021-12-22 16:40:12,045 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:40:12,046 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 7 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:12,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 226 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-22 16:40:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-22 16:40:12,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 92 states have (on average 1.5217391304347827) internal successors, (140), 123 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2021-12-22 16:40:12,050 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 12 [2021-12-22 16:40:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:12,050 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2021-12-22 16:40:12,050 INFO L471 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) [2021-12-22 16:40:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2021-12-22 16:40:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:40:12,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:12,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:12,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:40:12,051 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1478309260, now seen corresponding path program 1 times [2021-12-22 16:40:12,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377451717] [2021-12-22 16:40:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:12,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:12,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:12,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377451717] [2021-12-22 16:40:12,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377451717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:12,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:12,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:40:12,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616004341] [2021-12-22 16:40:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:12,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:40:12,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:40:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:12,111 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-12-22 16:40:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:12,199 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2021-12-22 16:40:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:40:12,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 [2021-12-22 16:40:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:12,200 INFO L225 Difference]: With dead ends: 132 [2021-12-22 16:40:12,206 INFO L226 Difference]: Without dead ends: 132 [2021-12-22 16:40:12,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:40:12,209 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:12,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 266 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-22 16:40:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-12-22 16:40:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 127 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) [2021-12-22 16:40:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2021-12-22 16:40:12,219 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 16 [2021-12-22 16:40:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:12,220 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2021-12-22 16:40:12,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-12-22 16:40:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2021-12-22 16:40:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:40:12,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:12,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:12,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:40:12,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2021-12-22 16:40:12,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:12,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897748447] [2021-12-22 16:40:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:12,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:12,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:12,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897748447] [2021-12-22 16:40:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897748447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:12,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:12,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:40:12,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784511239] [2021-12-22 16:40:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:12,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:40:12,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:40:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:40:12,313 INFO L87 Difference]: Start difference. First operand 128 states and 145 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) [2021-12-22 16:40:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:12,562 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2021-12-22 16:40:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 16:40:12,563 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 [2021-12-22 16:40:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:12,563 INFO L225 Difference]: With dead ends: 132 [2021-12-22 16:40:12,563 INFO L226 Difference]: Without dead ends: 132 [2021-12-22 16:40:12,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:40:12,564 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 148 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:12,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 167 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:12,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-22 16:40:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2021-12-22 16:40:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 96 states have (on average 1.5) internal successors, (144), 126 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) [2021-12-22 16:40:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2021-12-22 16:40:12,567 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 16 [2021-12-22 16:40:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:12,567 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2021-12-22 16:40:12,567 INFO L471 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) [2021-12-22 16:40:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2021-12-22 16:40:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:40:12,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:12,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:12,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 16:40:12,567 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2021-12-22 16:40:12,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154686038] [2021-12-22 16:40:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:12,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:12,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154686038] [2021-12-22 16:40:12,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154686038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:12,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:12,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 16:40:12,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921216209] [2021-12-22 16:40:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:12,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:40:12,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:40:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:40:12,686 INFO L87 Difference]: Start difference. First operand 127 states and 144 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) [2021-12-22 16:40:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:13,077 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2021-12-22 16:40:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 16:40:13,078 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 [2021-12-22 16:40:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:13,078 INFO L225 Difference]: With dead ends: 128 [2021-12-22 16:40:13,078 INFO L226 Difference]: Without dead ends: 128 [2021-12-22 16:40:13,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-12-22 16:40:13,079 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 151 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:13,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 182 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-22 16:40:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2021-12-22 16:40:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 90 states have (on average 1.4777777777777779) internal successors, (133), 115 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) [2021-12-22 16:40:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2021-12-22 16:40:13,081 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 16 [2021-12-22 16:40:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:13,081 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2021-12-22 16:40:13,082 INFO L471 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) [2021-12-22 16:40:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2021-12-22 16:40:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 16:40:13,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:13,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:13,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 16:40:13,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1695296497, now seen corresponding path program 1 times [2021-12-22 16:40:13,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:13,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219332753] [2021-12-22 16:40:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:13,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:13,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219332753] [2021-12-22 16:40:13,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219332753] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412475281] [2021-12-22 16:40:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:13,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:13,181 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) [2021-12-22 16:40:13,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 16:40:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:13,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 16:40:13,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:13,343 INFO L387 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 [2021-12-22 16:40:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:13,383 INFO L387 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 [2021-12-22 16:40:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:13,424 INFO L387 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 23 treesize of output 22 [2021-12-22 16:40:13,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:13,504 INFO L387 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 19 treesize of output 19 [2021-12-22 16:40:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:13,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:40:13,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412475281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:13,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 16:40:13,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2021-12-22 16:40:13,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141139586] [2021-12-22 16:40:13,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:13,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:40:13,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:40:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 16:40:13,555 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-12-22 16:40:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:13,611 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-22 16:40:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:40:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 [2021-12-22 16:40:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:13,612 INFO L225 Difference]: With dead ends: 122 [2021-12-22 16:40:13,612 INFO L226 Difference]: Without dead ends: 121 [2021-12-22 16:40:13,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-22 16:40:13,613 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:13,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 190 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2021-12-22 16:40:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-22 16:40:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-12-22 16:40:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 118 states have internal predecessors, (136), 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) [2021-12-22 16:40:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2021-12-22 16:40:13,616 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 20 [2021-12-22 16:40:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:13,616 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2021-12-22 16:40:13,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-12-22 16:40:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2021-12-22 16:40:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 16:40:13,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:13,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:13,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 16:40:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 16:40:13,833 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1116806667, now seen corresponding path program 1 times [2021-12-22 16:40:13,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:13,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415837721] [2021-12-22 16:40:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:13,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:13,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415837721] [2021-12-22 16:40:13,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415837721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:13,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:13,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:40:13,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286472655] [2021-12-22 16:40:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:13,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:40:13,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:40:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:40:13,887 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-12-22 16:40:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:14,025 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2021-12-22 16:40:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:40:14,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 [2021-12-22 16:40:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:14,026 INFO L225 Difference]: With dead ends: 185 [2021-12-22 16:40:14,026 INFO L226 Difference]: Without dead ends: 185 [2021-12-22 16:40:14,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:40:14,027 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:14,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 416 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-22 16:40:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 132. [2021-12-22 16:40:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 1.4433962264150944) internal successors, (153), 131 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2021-12-22 16:40:14,029 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 20 [2021-12-22 16:40:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:14,029 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2021-12-22 16:40:14,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-12-22 16:40:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2021-12-22 16:40:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:40:14,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:14,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:14,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 16:40:14,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:14,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1012953034, now seen corresponding path program 1 times [2021-12-22 16:40:14,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:14,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732710005] [2021-12-22 16:40:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:14,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:14,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:14,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732710005] [2021-12-22 16:40:14,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732710005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:14,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:14,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:40:14,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719445470] [2021-12-22 16:40:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:14,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:40:14,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:14,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:40:14,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:40:14,118 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-22 16:40:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:14,319 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2021-12-22 16:40:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:40:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2021-12-22 16:40:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:14,320 INFO L225 Difference]: With dead ends: 161 [2021-12-22 16:40:14,320 INFO L226 Difference]: Without dead ends: 161 [2021-12-22 16:40:14,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-22 16:40:14,321 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 213 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:14,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 119 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-22 16:40:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 133. [2021-12-22 16:40:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 132 states have internal predecessors, (155), 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) [2021-12-22 16:40:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-12-22 16:40:14,323 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 21 [2021-12-22 16:40:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:14,323 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-12-22 16:40:14,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-22 16:40:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-12-22 16:40:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:40:14,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:14,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:14,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 16:40:14,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1012953035, now seen corresponding path program 1 times [2021-12-22 16:40:14,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173435899] [2021-12-22 16:40:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:14,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:14,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:14,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173435899] [2021-12-22 16:40:14,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173435899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:14,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:14,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:40:14,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640541547] [2021-12-22 16:40:14,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:14,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:40:14,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:40:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:40:14,445 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-22 16:40:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:14,803 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2021-12-22 16:40:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:40:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2021-12-22 16:40:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:14,805 INFO L225 Difference]: With dead ends: 192 [2021-12-22 16:40:14,805 INFO L226 Difference]: Without dead ends: 192 [2021-12-22 16:40:14,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-22 16:40:14,805 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 359 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:14,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 190 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-22 16:40:14,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 135. [2021-12-22 16:40:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 134 states have internal predecessors, (157), 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) [2021-12-22 16:40:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2021-12-22 16:40:14,808 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 21 [2021-12-22 16:40:14,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:14,808 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2021-12-22 16:40:14,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-22 16:40:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2021-12-22 16:40:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 16:40:14,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:14,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:14,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 16:40:14,809 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:14,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1509706513, now seen corresponding path program 1 times [2021-12-22 16:40:14,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:14,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100033101] [2021-12-22 16:40:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:14,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:14,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:14,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100033101] [2021-12-22 16:40:14,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100033101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:14,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:14,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 16:40:14,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556233423] [2021-12-22 16:40:14,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:14,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 16:40:14,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 16:40:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:40:14,929 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:15,315 INFO L93 Difference]: Finished difference Result 202 states and 226 transitions. [2021-12-22 16:40:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:40:15,316 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 16:40:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:15,317 INFO L225 Difference]: With dead ends: 202 [2021-12-22 16:40:15,317 INFO L226 Difference]: Without dead ends: 202 [2021-12-22 16:40:15,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-12-22 16:40:15,317 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 147 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:15,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 409 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:40:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-22 16:40:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 147. [2021-12-22 16:40:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 146 states have internal predecessors, (170), 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) [2021-12-22 16:40:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2021-12-22 16:40:15,320 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 23 [2021-12-22 16:40:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:15,322 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2021-12-22 16:40:15,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2021-12-22 16:40:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 16:40:15,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:15,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:15,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 16:40:15,323 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash 442909652, now seen corresponding path program 1 times [2021-12-22 16:40:15,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930234918] [2021-12-22 16:40:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:15,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:15,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930234918] [2021-12-22 16:40:15,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930234918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:15,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:15,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:40:15,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874722487] [2021-12-22 16:40:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:15,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:40:15,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:40:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:40:15,368 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-12-22 16:40:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:15,437 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2021-12-22 16:40:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:40:15,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-12-22 16:40:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:15,438 INFO L225 Difference]: With dead ends: 172 [2021-12-22 16:40:15,438 INFO L226 Difference]: Without dead ends: 172 [2021-12-22 16:40:15,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:15,440 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 156 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:15,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-22 16:40:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2021-12-22 16:40:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 146 states have internal predecessors, (169), 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) [2021-12-22 16:40:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2021-12-22 16:40:15,443 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 24 [2021-12-22 16:40:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:15,444 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2021-12-22 16:40:15,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-12-22 16:40:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2021-12-22 16:40:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 16:40:15,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:15,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:15,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 16:40:15,445 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1972392122, now seen corresponding path program 1 times [2021-12-22 16:40:15,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:15,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931235916] [2021-12-22 16:40:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:15,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:15,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:15,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931235916] [2021-12-22 16:40:15,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931235916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:15,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:15,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:40:15,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131353134] [2021-12-22 16:40:15,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:15,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:40:15,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:15,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:40:15,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:40:15,541 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-12-22 16:40:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:15,715 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2021-12-22 16:40:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:40:15,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 [2021-12-22 16:40:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:15,716 INFO L225 Difference]: With dead ends: 207 [2021-12-22 16:40:15,716 INFO L226 Difference]: Without dead ends: 207 [2021-12-22 16:40:15,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:40:15,717 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 169 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:15,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 292 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:40:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-22 16:40:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 151. [2021-12-22 16:40:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 126 states have (on average 1.373015873015873) internal successors, (173), 150 states have internal predecessors, (173), 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) [2021-12-22 16:40:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2021-12-22 16:40:15,721 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 25 [2021-12-22 16:40:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:15,721 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2021-12-22 16:40:15,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-12-22 16:40:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2021-12-22 16:40:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:40:15,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:15,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:15,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 16:40:15,722 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash 435867832, now seen corresponding path program 1 times [2021-12-22 16:40:15,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:15,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145003117] [2021-12-22 16:40:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:15,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:15,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:15,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145003117] [2021-12-22 16:40:15,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145003117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:15,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:15,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:40:15,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514056420] [2021-12-22 16:40:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:15,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:40:15,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:40:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:40:15,788 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:15,866 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2021-12-22 16:40:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:40:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 16:40:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:15,867 INFO L225 Difference]: With dead ends: 169 [2021-12-22 16:40:15,867 INFO L226 Difference]: Without dead ends: 169 [2021-12-22 16:40:15,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:15,868 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 151 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:15,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 93 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-22 16:40:15,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-12-22 16:40:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 151 states have internal predecessors, (174), 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) [2021-12-22 16:40:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2021-12-22 16:40:15,870 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 26 [2021-12-22 16:40:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:15,871 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2021-12-22 16:40:15,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2021-12-22 16:40:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:40:15,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:15,871 INFO L514 BasicCegarLoop]: 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] [2021-12-22 16:40:15,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 16:40:15,871 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1248965482, now seen corresponding path program 1 times [2021-12-22 16:40:15,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634739551] [2021-12-22 16:40:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:15,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:16,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:16,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634739551] [2021-12-22 16:40:16,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634739551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:16,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976273931] [2021-12-22 16:40:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:16,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:16,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:16,007 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) [2021-12-22 16:40:16,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 16:40:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:16,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-22 16:40:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:16,096 INFO L387 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 [2021-12-22 16:40:16,118 INFO L387 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 11 treesize of output 7 [2021-12-22 16:40:16,122 INFO L387 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 11 treesize of output 7 [2021-12-22 16:40:16,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,152 INFO L387 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 [2021-12-22 16:40:16,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,157 INFO L387 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 [2021-12-22 16:40:16,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,195 INFO L387 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 [2021-12-22 16:40:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,202 INFO L387 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 [2021-12-22 16:40:16,260 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:40:16,261 INFO L387 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 [2021-12-22 16:40:16,294 INFO L387 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 14 treesize of output 16 [2021-12-22 16:40:16,300 INFO L387 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 14 treesize of output 16 [2021-12-22 16:40:16,320 INFO L387 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 19 treesize of output 18 [2021-12-22 16:40:16,329 INFO L387 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 23 treesize of output 22 [2021-12-22 16:40:16,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,363 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 16:40:16,363 INFO L387 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 1 case distinctions, treesize of input 44 treesize of output 41 [2021-12-22 16:40:16,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:16,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-22 16:40:16,709 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 16:40:16,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 42 [2021-12-22 16:40:16,717 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 16:40:16,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-12-22 16:40:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:16,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:40:16,982 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-22 16:40:16,982 INFO L387 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 2 case distinctions, treesize of input 172 treesize of output 170 [2021-12-22 16:40:16,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:16,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:16,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:16,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 43 [2021-12-22 16:40:16,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:16,998 INFO L387 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 15 treesize of output 9 [2021-12-22 16:40:17,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:17,019 INFO L387 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 15 treesize of output 9 [2021-12-22 16:40:17,038 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-22 16:40:17,039 INFO L387 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 15 treesize of output 9 [2021-12-22 16:40:17,043 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-22 16:40:17,043 INFO L387 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 15 treesize of output 9 [2021-12-22 16:40:17,114 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,133 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,158 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,192 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,272 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,290 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,320 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,354 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,384 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,401 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,430 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,461 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,494 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,509 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,536 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,562 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,594 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,610 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,636 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,662 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,699 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,720 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,766 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,792 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,839 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,875 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,968 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:17,983 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:18,017 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:18,036 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:18,073 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:18,096 INFO L387 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 13 treesize of output 9 [2021-12-22 16:40:18,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:18,181 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:18,181 INFO L387 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 47 treesize of output 53 [2021-12-22 16:40:18,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:18,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:18,189 INFO L387 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 53 treesize of output 58 [2021-12-22 16:40:18,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:18,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 70 treesize of output 56 [2021-12-22 16:40:18,207 INFO L353 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-12-22 16:40:18,209 INFO L387 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 68 treesize of output 73 [2021-12-22 16:40:18,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:18,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 85 treesize of output 71 [2021-12-22 16:40:18,223 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-22 16:40:18,223 INFO L387 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 83 treesize of output 85 [2021-12-22 16:40:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:18,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976273931] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:18,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-22 16:40:18,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11, 13] total 30 [2021-12-22 16:40:18,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182110389] [2021-12-22 16:40:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:18,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 16:40:18,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 16:40:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=756, Unknown=3, NotChecked=0, Total=870 [2021-12-22 16:40:18,290 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:18,834 INFO L93 Difference]: Finished difference Result 167 states and 189 transitions. [2021-12-22 16:40:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 16:40:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 16:40:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:18,836 INFO L225 Difference]: With dead ends: 167 [2021-12-22 16:40:18,836 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 16:40:18,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=1308, Unknown=3, NotChecked=0, Total=1482 [2021-12-22 16:40:18,836 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:18,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 528 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 474 Invalid, 0 Unknown, 78 Unchecked, 0.3s Time] [2021-12-22 16:40:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 16:40:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2021-12-22 16:40:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 130 states have (on average 1.3615384615384616) internal successors, (177), 154 states have internal predecessors, (177), 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) [2021-12-22 16:40:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2021-12-22 16:40:18,839 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 26 [2021-12-22 16:40:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:18,839 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2021-12-22 16:40:18,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2021-12-22 16:40:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:40:18,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:18,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:18,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 16:40:19,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-22 16:40:19,054 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1016244459, now seen corresponding path program 1 times [2021-12-22 16:40:19,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:19,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811872456] [2021-12-22 16:40:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:19,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:19,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:19,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811872456] [2021-12-22 16:40:19,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811872456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:19,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:19,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:40:19,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224448712] [2021-12-22 16:40:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:19,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:40:19,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:40:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:40:19,165 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:19,490 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-12-22 16:40:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 16:40:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 16:40:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:19,491 INFO L225 Difference]: With dead ends: 191 [2021-12-22 16:40:19,491 INFO L226 Difference]: Without dead ends: 191 [2021-12-22 16:40:19,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:40:19,492 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 79 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:19,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:40:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-22 16:40:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 160. [2021-12-22 16:40:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 135 states have (on average 1.348148148148148) internal successors, (182), 159 states have internal predecessors, (182), 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) [2021-12-22 16:40:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2021-12-22 16:40:19,494 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 26 [2021-12-22 16:40:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:19,494 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2021-12-22 16:40:19,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2021-12-22 16:40:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:40:19,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:19,495 INFO L514 BasicCegarLoop]: 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] [2021-12-22 16:40:19,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 16:40:19,495 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1528828450, now seen corresponding path program 1 times [2021-12-22 16:40:19,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:19,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038081579] [2021-12-22 16:40:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:19,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:19,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:19,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038081579] [2021-12-22 16:40:19,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038081579] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:19,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153737363] [2021-12-22 16:40:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:19,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:19,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:19,631 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) [2021-12-22 16:40:19,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 16:40:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:19,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-22 16:40:19,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:19,734 INFO L387 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 [2021-12-22 16:40:19,793 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:40:19,793 INFO L387 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 [2021-12-22 16:40:19,821 INFO L387 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 [2021-12-22 16:40:19,895 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:19,896 INFO L387 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 [2021-12-22 16:40:19,953 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:19,953 INFO L387 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 [2021-12-22 16:40:19,985 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:19,985 INFO L387 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 28 treesize of output 29 [2021-12-22 16:40:20,060 INFO L387 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 [2021-12-22 16:40:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:20,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:40:20,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2021-12-22 16:40:20,093 INFO L353 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-12-22 16:40:20,093 INFO L387 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 19 treesize of output 18 [2021-12-22 16:40:20,096 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) is different from false [2021-12-22 16:40:20,099 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_#t~mem5#1.base|)) is different from false [2021-12-22 16:40:20,103 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-22 16:40:20,110 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_797 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_797))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse1)))) is different from false [2021-12-22 16:40:20,114 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_797 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_797))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-22 16:40:20,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:20,123 INFO L387 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 51 treesize of output 36 [2021-12-22 16:40:20,135 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:20,136 INFO L387 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 408 treesize of output 343 [2021-12-22 16:40:20,144 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:20,144 INFO L387 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 328 treesize of output 300 [2021-12-22 16:40:20,147 INFO L387 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 292 treesize of output 276 [2021-12-22 16:40:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:20,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153737363] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:40:20,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:40:20,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 31 [2021-12-22 16:40:20,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081769210] [2021-12-22 16:40:20,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:40:20,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 16:40:20,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 16:40:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=576, Unknown=6, NotChecked=318, Total=992 [2021-12-22 16:40:20,481 INFO L87 Difference]: Start difference. First operand 160 states and 182 transitions. Second operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 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) [2021-12-22 16:40:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:21,463 INFO L93 Difference]: Finished difference Result 316 states and 354 transitions. [2021-12-22 16:40:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 16:40:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 16:40:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:21,464 INFO L225 Difference]: With dead ends: 316 [2021-12-22 16:40:21,464 INFO L226 Difference]: Without dead ends: 316 [2021-12-22 16:40:21,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1556, Unknown=6, NotChecked=534, Total=2450 [2021-12-22 16:40:21,466 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 518 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1243 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:21,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 607 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1343 Invalid, 0 Unknown, 1243 Unchecked, 0.6s Time] [2021-12-22 16:40:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-22 16:40:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 179. [2021-12-22 16:40:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 178 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2021-12-22 16:40:21,469 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 27 [2021-12-22 16:40:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2021-12-22 16:40:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 32 states have internal predecessors, (67), 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) [2021-12-22 16:40:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2021-12-22 16:40:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:40:21,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:21,469 INFO L514 BasicCegarLoop]: 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] [2021-12-22 16:40:21,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 16:40:21,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:21,670 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-22 16:40:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1528828449, now seen corresponding path program 1 times [2021-12-22 16:40:21,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:21,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926351552] [2021-12-22 16:40:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:21,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:21,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:21,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926351552] [2021-12-22 16:40:21,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926351552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:21,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909390995] [2021-12-22 16:40:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:21,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:21,840 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) [2021-12-22 16:40:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 16:40:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:21,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-22 16:40:21,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:21,949 INFO L387 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 [2021-12-22 16:40:22,014 INFO L387 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 [2021-12-22 16:40:22,029 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:40:22,029 INFO L387 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 [2021-12-22 16:40:22,060 INFO L387 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 [2021-12-22 16:40:22,071 INFO L387 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 11 treesize of output 7 [2021-12-22 16:40:22,153 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:22,153 INFO L387 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 [2021-12-22 16:40:22,156 INFO L387 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 18 treesize of output 20 [2021-12-22 16:40:22,242 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:22,242 INFO L387 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 31 treesize of output 29 [2021-12-22 16:40:22,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:22,250 INFO L387 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 14 treesize of output 16 [2021-12-22 16:40:22,265 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:40:22,266 INFO L387 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 [2021-12-22 16:40:22,269 INFO L387 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 18 treesize of output 20 [2021-12-22 16:40:22,371 INFO L387 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 [2021-12-22 16:40:22,373 INFO L387 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 15 treesize of output 7 [2021-12-22 16:40:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:22,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:40:22,526 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-22 16:40:22,544 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-22 16:40:22,551 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-22 16:40:22,568 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899) .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-22 16:40:22,577 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_898))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_899) .cse1 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_899) (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_898) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-22 16:40:22,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:22,592 INFO L387 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 73 treesize of output 74 [2021-12-22 16:40:22,595 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:22,595 INFO L387 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 65 treesize of output 50 [2021-12-22 16:40:22,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:22,603 INFO L387 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 632 treesize of output 567 [2021-12-22 16:40:22,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:22,621 INFO L387 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 1872 treesize of output 1783 [2021-12-22 16:40:22,634 INFO L387 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 1768 treesize of output 1688 [2021-12-22 16:40:22,642 INFO L387 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 1688 treesize of output 1656 [2021-12-22 16:40:22,650 INFO L387 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 1656 treesize of output 1576 [2021-12-22 16:40:22,662 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:22,662 INFO L387 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 1576 treesize of output 1436