./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version c3fed411 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/sll-simple-white-blue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fc03d948b3133d1e09e5b9df570e018433e0831cbe27440ede702c2678003704 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 19:19:21,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:19:21,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:19:21,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:19:21,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:19:21,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:19:21,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:19:21,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:19:21,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:19:21,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:19:21,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:19:21,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:19:21,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:19:21,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:19:21,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:19:21,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:19:21,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:19:21,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:19:21,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:19:21,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:19:21,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:19:21,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:19:21,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:19:21,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:19:21,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:19:21,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:19:21,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:19:21,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:19:21,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:19:21,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:19:21,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:19:21,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:19:21,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:19:21,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:19:21,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:19:21,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:19:21,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:19:21,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:19:21,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:19:21,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:19:21,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:19:21,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-18 19:19:21,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:19:21,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:19:21,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:19:21,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:19:21,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:19:21,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:19:21,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:19:21,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:19:21,803 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:19:21,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:19:21,803 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:19:21,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:19:21,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:19:21,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:19:21,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:19:21,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:19:21,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 19:19:21,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 19:19:21,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:19:21,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc03d948b3133d1e09e5b9df570e018433e0831cbe27440ede702c2678003704 [2021-12-18 19:19:22,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:19:22,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:19:22,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:19:22,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:19:22,043 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:19:22,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-12-18 19:19:22,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f55c18a1/482b42f2a9824f4f81095da662700e22/FLAG8fc2bbd0d [2021-12-18 19:19:22,499 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:19:22,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-12-18 19:19:22,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f55c18a1/482b42f2a9824f4f81095da662700e22/FLAG8fc2bbd0d [2021-12-18 19:19:22,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f55c18a1/482b42f2a9824f4f81095da662700e22 [2021-12-18 19:19:22,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:19:22,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:19:22,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:19:22,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:19:22,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:19:22,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c86b593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22, skipping insertion in model container [2021-12-18 19:19:22,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:19:22,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:19:22,790 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/sll-simple-white-blue-2.i[22617,22630] [2021-12-18 19:19:22,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:19:22,803 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 19:19:22,827 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/sll-simple-white-blue-2.i[22617,22630] [2021-12-18 19:19:22,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:19:22,846 INFO L208 MainTranslator]: Completed translation [2021-12-18 19:19:22,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22 WrapperNode [2021-12-18 19:19:22,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:19:22,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 19:19:22,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 19:19:22,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 19:19:22,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,875 INFO L137 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2021-12-18 19:19:22,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 19:19:22,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 19:19:22,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 19:19:22,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 19:19:22,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 19:19:22,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 19:19:22,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 19:19:22,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 19:19:22,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (1/1) ... [2021-12-18 19:19:22,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:19:22,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:22,932 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) [2021-12-18 19:19:22,936 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 [2021-12-18 19:19:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 19:19:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 19:19:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 19:19:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 19:19:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 19:19:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 19:19:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 19:19:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 19:19:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 19:19:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 19:19:23,065 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 19:19:23,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 19:19:23,321 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 19:19:23,325 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 19:19:23,326 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-18 19:19:23,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:19:23 BoogieIcfgContainer [2021-12-18 19:19:23,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 19:19:23,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 19:19:23,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 19:19:23,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 19:19:23,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:19:22" (1/3) ... [2021-12-18 19:19:23,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db62ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:19:23, skipping insertion in model container [2021-12-18 19:19:23,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:22" (2/3) ... [2021-12-18 19:19:23,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db62ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:19:23, skipping insertion in model container [2021-12-18 19:19:23,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:19:23" (3/3) ... [2021-12-18 19:19:23,333 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2021-12-18 19:19:23,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 19:19:23,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-12-18 19:19:23,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 19:19:23,411 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 [2021-12-18 19:19:23,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-12-18 19:19:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-18 19:19:23,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:23,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-18 19:19:23,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-18 19:19:23,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:23,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406709793] [2021-12-18 19:19:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:23,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:23,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406709793] [2021-12-18 19:19:23,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406709793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:23,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:23,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:23,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877828411] [2021-12-18 19:19:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:23,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:23,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:23,603 INFO L87 Difference]: Start difference. First operand has 107 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 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) [2021-12-18 19:19:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:23,732 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-12-18 19:19:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:23,734 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 [2021-12-18 19:19:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:23,742 INFO L225 Difference]: With dead ends: 135 [2021-12-18 19:19:23,742 INFO L226 Difference]: Without dead ends: 131 [2021-12-18 19:19:23,743 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 [2021-12-18 19:19:23,746 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 93 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:23,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 114 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-18 19:19:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 102. [2021-12-18 19:19:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 101 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2021-12-18 19:19:23,781 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 3 [2021-12-18 19:19:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:23,781 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2021-12-18 19:19:23,781 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) [2021-12-18 19:19:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2021-12-18 19:19:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-18 19:19:23,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:23,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-18 19:19:23,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 19:19:23,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-18 19:19:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:23,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466882134] [2021-12-18 19:19:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:23,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:23,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:23,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466882134] [2021-12-18 19:19:23,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466882134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:23,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:23,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:23,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767926994] [2021-12-18 19:19:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:23,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:23,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:23,852 INFO L87 Difference]: Start difference. First operand 102 states and 108 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) [2021-12-18 19:19:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:23,941 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-12-18 19:19:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:23,942 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 [2021-12-18 19:19:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:23,943 INFO L225 Difference]: With dead ends: 129 [2021-12-18 19:19:23,944 INFO L226 Difference]: Without dead ends: 129 [2021-12-18 19:19:23,944 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 [2021-12-18 19:19:23,945 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 89 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:23,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 110 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-18 19:19:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2021-12-18 19:19:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 55 states have (on average 1.9272727272727272) internal successors, (106), 99 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2021-12-18 19:19:23,957 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 3 [2021-12-18 19:19:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:23,958 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2021-12-18 19:19:23,958 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) [2021-12-18 19:19:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2021-12-18 19:19:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:19:23,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:23,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:23,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 19:19:23,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2021-12-18 19:19:23,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:23,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49730167] [2021-12-18 19:19:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:23,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:24,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:24,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49730167] [2021-12-18 19:19:24,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49730167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:24,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:24,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:19:24,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071607526] [2021-12-18 19:19:24,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:24,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:19:24,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:19:24,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:19:24,071 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:24,181 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-18 19:19:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:24,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-12-18 19:19:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:24,184 INFO L225 Difference]: With dead ends: 103 [2021-12-18 19:19:24,184 INFO L226 Difference]: Without dead ends: 103 [2021-12-18 19:19:24,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:24,188 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 139 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:24,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 44 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-18 19:19:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2021-12-18 19:19:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-12-18 19:19:24,205 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 8 [2021-12-18 19:19:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:24,206 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-12-18 19:19:24,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-12-18 19:19:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:19:24,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:24,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:24,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 19:19:24,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2021-12-18 19:19:24,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:24,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783724577] [2021-12-18 19:19:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:24,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:24,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783724577] [2021-12-18 19:19:24,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783724577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:24,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:24,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:24,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446912782] [2021-12-18 19:19:24,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:19:24,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:24,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:19:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:24,314 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:24,503 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-12-18 19:19:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-12-18 19:19:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:24,505 INFO L225 Difference]: With dead ends: 133 [2021-12-18 19:19:24,505 INFO L226 Difference]: Without dead ends: 133 [2021-12-18 19:19:24,505 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 [2021-12-18 19:19:24,510 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 263 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:24,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 76 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:19:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-18 19:19:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2021-12-18 19:19:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 111 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2021-12-18 19:19:24,524 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 8 [2021-12-18 19:19:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:24,525 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2021-12-18 19:19:24,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2021-12-18 19:19:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 19:19:24,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:24,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:24,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 19:19:24,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-12-18 19:19:24,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:24,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481709753] [2021-12-18 19:19:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:24,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:24,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:24,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481709753] [2021-12-18 19:19:24,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481709753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:24,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:24,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:24,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828867268] [2021-12-18 19:19:24,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:24,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:19:24,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:24,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:19:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:24,600 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-18 19:19:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:24,766 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-18 19:19:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 19:19:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2021-12-18 19:19:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:24,767 INFO L225 Difference]: With dead ends: 113 [2021-12-18 19:19:24,767 INFO L226 Difference]: Without dead ends: 113 [2021-12-18 19:19:24,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:19:24,769 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 52 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:24,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 181 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-18 19:19:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-12-18 19:19:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.524390243902439) internal successors, (125), 110 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-12-18 19:19:24,774 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-12-18 19:19:24,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:24,776 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-12-18 19:19:24,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-18 19:19:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-12-18 19:19:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 19:19:24,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:24,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:24,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 19:19:24,777 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-12-18 19:19:24,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:24,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338744296] [2021-12-18 19:19:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:24,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:24,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:24,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338744296] [2021-12-18 19:19:24,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338744296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:24,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:24,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:24,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288812415] [2021-12-18 19:19:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:24,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:19:24,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:19:24,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:24,868 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-18 19:19:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:25,054 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-12-18 19:19:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 19:19:25,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2021-12-18 19:19:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:25,055 INFO L225 Difference]: With dead ends: 111 [2021-12-18 19:19:25,055 INFO L226 Difference]: Without dead ends: 111 [2021-12-18 19:19:25,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:19:25,056 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 13 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:25,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-18 19:19:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2021-12-18 19:19:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 101 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-12-18 19:19:25,058 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 12 [2021-12-18 19:19:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:25,058 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-12-18 19:19:25,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-12-18 19:19:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-12-18 19:19:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-18 19:19:25,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:25,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:25,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 19:19:25,059 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1831378933, now seen corresponding path program 1 times [2021-12-18 19:19:25,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:25,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768005358] [2021-12-18 19:19:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:25,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:25,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768005358] [2021-12-18 19:19:25,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768005358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:25,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:25,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:25,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401021719] [2021-12-18 19:19:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:25,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:25,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:25,109 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:25,192 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-18 19:19:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:19:25,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-18 19:19:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:25,193 INFO L225 Difference]: With dead ends: 113 [2021-12-18 19:19:25,193 INFO L226 Difference]: Without dead ends: 113 [2021-12-18 19:19:25,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:19:25,194 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 16 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:25,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-18 19:19:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2021-12-18 19:19:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 83 states have (on average 1.4819277108433735) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2021-12-18 19:19:25,196 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 15 [2021-12-18 19:19:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:25,196 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2021-12-18 19:19:25,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2021-12-18 19:19:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 19:19:25,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:25,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:25,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 19:19:25,198 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -555036255, now seen corresponding path program 1 times [2021-12-18 19:19:25,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149507888] [2021-12-18 19:19:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:25,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149507888] [2021-12-18 19:19:25,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149507888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:25,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:25,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:19:25,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330791667] [2021-12-18 19:19:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:25,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:25,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:25,230 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:25,313 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2021-12-18 19:19:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:19:25,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-18 19:19:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:25,314 INFO L225 Difference]: With dead ends: 107 [2021-12-18 19:19:25,314 INFO L226 Difference]: Without dead ends: 107 [2021-12-18 19:19:25,315 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 [2021-12-18 19:19:25,315 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:25,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 194 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-18 19:19:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-18 19:19:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 106 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) [2021-12-18 19:19:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-12-18 19:19:25,318 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 17 [2021-12-18 19:19:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:25,318 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-12-18 19:19:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-12-18 19:19:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 19:19:25,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:25,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:25,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 19:19:25,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -555036254, now seen corresponding path program 1 times [2021-12-18 19:19:25,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:25,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163255326] [2021-12-18 19:19:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:25,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163255326] [2021-12-18 19:19:25,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163255326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:25,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:25,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:19:25,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569031126] [2021-12-18 19:19:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:25,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:25,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:25,361 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:25,444 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2021-12-18 19:19:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:19:25,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-18 19:19:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:25,445 INFO L225 Difference]: With dead ends: 106 [2021-12-18 19:19:25,445 INFO L226 Difference]: Without dead ends: 106 [2021-12-18 19:19:25,446 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 [2021-12-18 19:19:25,446 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:25,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 189 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-18 19:19:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-12-18 19:19:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4337349397590362) 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) [2021-12-18 19:19:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-12-18 19:19:25,448 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 17 [2021-12-18 19:19:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:25,449 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-12-18 19:19:25,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-12-18 19:19:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:19:25,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:25,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:25,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 19:19:25,450 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1499933727, now seen corresponding path program 1 times [2021-12-18 19:19:25,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:25,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751863453] [2021-12-18 19:19:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:25,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:25,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751863453] [2021-12-18 19:19:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751863453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:25,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534656470] [2021-12-18 19:19:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:25,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:25,544 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) [2021-12-18 19:19:25,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 19:19:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-18 19:19:25,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:25,690 INFO L388 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 [2021-12-18 19:19:25,746 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 19:19:25,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 19:19:25,802 INFO L388 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 [2021-12-18 19:19:25,862 INFO L388 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 [2021-12-18 19:19:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:25,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:19:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:26,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534656470] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:19:26,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:19:26,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-18 19:19:26,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216253593] [2021-12-18 19:19:26,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:19:26,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 19:19:26,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 19:19:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:19:26,009 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:26,247 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2021-12-18 19:19:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:19:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-18 19:19:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:26,248 INFO L225 Difference]: With dead ends: 152 [2021-12-18 19:19:26,248 INFO L226 Difference]: Without dead ends: 152 [2021-12-18 19:19:26,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-12-18 19:19:26,249 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 280 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:26,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 133 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 327 Invalid, 0 Unknown, 9 Unchecked, 0.2s Time] [2021-12-18 19:19:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-18 19:19:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2021-12-18 19:19:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 108 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2021-12-18 19:19:26,251 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 18 [2021-12-18 19:19:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:26,251 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2021-12-18 19:19:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2021-12-18 19:19:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:19:26,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:26,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:26,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:26,452 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 [2021-12-18 19:19:26,453 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1499933728, now seen corresponding path program 1 times [2021-12-18 19:19:26,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:26,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935133890] [2021-12-18 19:19:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:26,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:26,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935133890] [2021-12-18 19:19:26,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935133890] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:26,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830258165] [2021-12-18 19:19:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:26,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:26,538 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) [2021-12-18 19:19:26,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 19:19:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:26,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-18 19:19:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:26,612 INFO L388 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 [2021-12-18 19:19:26,617 INFO L388 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 [2021-12-18 19:19:26,669 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 19:19:26,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2021-12-18 19:19:26,688 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:19:26,689 INFO L388 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 [2021-12-18 19:19:26,731 INFO L388 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 [2021-12-18 19:19:26,736 INFO L388 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 [2021-12-18 19:19:26,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 19:19:26,814 INFO L388 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 [2021-12-18 19:19:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:26,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:19:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830258165] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:19:27,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:19:27,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2021-12-18 19:19:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611516759] [2021-12-18 19:19:27,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:19:27,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 19:19:27,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 19:19:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-12-18 19:19:27,073 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:27,548 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2021-12-18 19:19:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 19:19:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-18 19:19:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:27,550 INFO L225 Difference]: With dead ends: 173 [2021-12-18 19:19:27,550 INFO L226 Difference]: Without dead ends: 173 [2021-12-18 19:19:27,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-12-18 19:19:27,551 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 461 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:27,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 245 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 608 Invalid, 0 Unknown, 39 Unchecked, 0.3s Time] [2021-12-18 19:19:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-18 19:19:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 108. [2021-12-18 19:19:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 107 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) [2021-12-18 19:19:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2021-12-18 19:19:27,553 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 18 [2021-12-18 19:19:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:27,553 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2021-12-18 19:19:27,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2021-12-18 19:19:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 19:19:27,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:27,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:27,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:27,754 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,SelfDestructingSolverStorable10 [2021-12-18 19:19:27,755 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash -748325560, now seen corresponding path program 1 times [2021-12-18 19:19:27,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603998718] [2021-12-18 19:19:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:27,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:27,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:27,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603998718] [2021-12-18 19:19:27,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603998718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:27,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:27,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 19:19:27,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549505298] [2021-12-18 19:19:27,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:27,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:19:27,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:19:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:19:27,810 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:27,978 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2021-12-18 19:19:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 19:19:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-18 19:19:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:27,979 INFO L225 Difference]: With dead ends: 152 [2021-12-18 19:19:27,979 INFO L226 Difference]: Without dead ends: 152 [2021-12-18 19:19:27,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-18 19:19:27,980 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 232 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:27,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 110 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-18 19:19:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2021-12-18 19:19:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-12-18 19:19:27,982 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 19 [2021-12-18 19:19:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:27,982 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-12-18 19:19:27,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-12-18 19:19:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 19:19:27,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:27,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:27,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 19:19:27,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -748325559, now seen corresponding path program 1 times [2021-12-18 19:19:27,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:27,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467751283] [2021-12-18 19:19:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:27,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:28,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467751283] [2021-12-18 19:19:28,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467751283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:28,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:28,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 19:19:28,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907795899] [2021-12-18 19:19:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:28,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 19:19:28,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:28,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 19:19:28,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:19:28,070 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:28,448 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2021-12-18 19:19:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 19:19:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-18 19:19:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:28,449 INFO L225 Difference]: With dead ends: 179 [2021-12-18 19:19:28,449 INFO L226 Difference]: Without dead ends: 179 [2021-12-18 19:19:28,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-18 19:19:28,449 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 349 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:28,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 192 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:19:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-18 19:19:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 114. [2021-12-18 19:19:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 113 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-12-18 19:19:28,451 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 19 [2021-12-18 19:19:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:28,451 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-12-18 19:19:28,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-12-18 19:19:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-18 19:19:28,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:28,452 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] [2021-12-18 19:19:28,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 19:19:28,452 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:28,452 INFO L85 PathProgramCache]: Analyzing trace with hash 539074524, now seen corresponding path program 1 times [2021-12-18 19:19:28,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:28,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110383751] [2021-12-18 19:19:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:28,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:28,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:28,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110383751] [2021-12-18 19:19:28,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110383751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:28,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:28,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 19:19:28,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929103255] [2021-12-18 19:19:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:28,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 19:19:28,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:28,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 19:19:28,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:19:28,528 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-12-18 19:19:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:28,721 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-12-18 19:19:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:19:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 [2021-12-18 19:19:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:28,722 INFO L225 Difference]: With dead ends: 120 [2021-12-18 19:19:28,722 INFO L226 Difference]: Without dead ends: 120 [2021-12-18 19:19:28,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-18 19:19:28,723 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 114 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:28,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 126 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-18 19:19:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2021-12-18 19:19:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.391304347826087) internal successors, (128), 112 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2021-12-18 19:19:28,726 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 20 [2021-12-18 19:19:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:28,726 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2021-12-18 19:19:28,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-12-18 19:19:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2021-12-18 19:19:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-18 19:19:28,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:28,727 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] [2021-12-18 19:19:28,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 19:19:28,727 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 539074525, now seen corresponding path program 1 times [2021-12-18 19:19:28,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524050822] [2021-12-18 19:19:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:28,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:28,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:28,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524050822] [2021-12-18 19:19:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524050822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:28,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:28,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 19:19:28,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82116272] [2021-12-18 19:19:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:28,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 19:19:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 19:19:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:19:28,809 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-12-18 19:19:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:29,031 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-12-18 19:19:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 19:19:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 [2021-12-18 19:19:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:29,032 INFO L225 Difference]: With dead ends: 119 [2021-12-18 19:19:29,032 INFO L226 Difference]: Without dead ends: 119 [2021-12-18 19:19:29,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-18 19:19:29,033 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 110 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:29,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 140 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:19:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-18 19:19:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2021-12-18 19:19:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.3804347826086956) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:19:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-12-18 19:19:29,036 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 20 [2021-12-18 19:19:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:29,036 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-12-18 19:19:29,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-12-18 19:19:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-12-18 19:19:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 19:19:29,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:29,037 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] [2021-12-18 19:19:29,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 19:19:29,037 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 45 more)] === [2021-12-18 19:19:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1881321363, now seen corresponding path program 1 times [2021-12-18 19:19:29,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:29,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516992545] [2021-12-18 19:19:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:29,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 19:19:29,049 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 19:19:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 19:19:29,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-18 19:19:29,067 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 19:19:29,068 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (48 of 49 remaining) [2021-12-18 19:19:29,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (47 of 49 remaining) [2021-12-18 19:19:29,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (46 of 49 remaining) [2021-12-18 19:19:29,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (45 of 49 remaining) [2021-12-18 19:19:29,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (44 of 49 remaining) [2021-12-18 19:19:29,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (43 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (42 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (41 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (40 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (39 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (38 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (37 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (36 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (35 of 49 remaining) [2021-12-18 19:19:29,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (34 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (33 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (32 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (31 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (30 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (29 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (28 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (27 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (26 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (25 of 49 remaining) [2021-12-18 19:19:29,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (24 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (23 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (22 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (21 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (20 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (19 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (18 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (17 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (16 of 49 remaining) [2021-12-18 19:19:29,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (15 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (14 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (13 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (12 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (11 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (10 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (9 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (8 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (7 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (6 of 49 remaining) [2021-12-18 19:19:29,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (5 of 49 remaining) [2021-12-18 19:19:29,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (4 of 49 remaining) [2021-12-18 19:19:29,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (3 of 49 remaining) [2021-12-18 19:19:29,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (2 of 49 remaining) [2021-12-18 19:19:29,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (1 of 49 remaining) [2021-12-18 19:19:29,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK (0 of 49 remaining) [2021-12-18 19:19:29,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 19:19:29,076 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:29,079 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 19:19:29,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:19:29 BoogieIcfgContainer [2021-12-18 19:19:29,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 19:19:29,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 19:19:29,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 19:19:29,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 19:19:29,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:19:23" (3/4) ... [2021-12-18 19:19:29,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-18 19:19:29,117 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 19:19:29,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 19:19:29,118 INFO L158 Benchmark]: Toolchain (without parser) took 6590.72ms. Allocated memory was 83.9MB in the beginning and 148.9MB in the end (delta: 65.0MB). Free memory was 50.1MB in the beginning and 44.1MB in the end (delta: 6.1MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-12-18 19:19:29,118 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:19:29,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.40ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 50.0MB in the beginning and 86.0MB in the end (delta: -36.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-18 19:19:29,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.96ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 19:19:29,119 INFO L158 Benchmark]: Boogie Preprocessor took 20.31ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:19:29,119 INFO L158 Benchmark]: RCFGBuilder took 430.37ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 64.6MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-18 19:19:29,119 INFO L158 Benchmark]: TraceAbstraction took 5766.42ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 64.3MB in the beginning and 46.2MB in the end (delta: 18.1MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-12-18 19:19:29,119 INFO L158 Benchmark]: Witness Printer took 22.18ms. Allocated memory is still 148.9MB. Free memory was 45.1MB in the beginning and 44.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:19:29,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.40ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 50.0MB in the beginning and 86.0MB in the end (delta: -36.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.96ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 83.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.31ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.37ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 64.6MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5766.42ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 64.3MB in the beginning and 46.2MB in the end (delta: 18.1MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Witness Printer took 22.18ms. Allocated memory is still 148.9MB. Free memory was 45.1MB in the beginning and 44.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1053]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); [L1000] head->next = ((void*)0) VAL [head={-1:0}] [L1001] head->data = 0 VAL [head={-1:0}] [L1003] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) [L1018] x->data = 1 VAL [head={-1:0}, x={-2:0}] [L1019] x->next = head VAL [head={-1:0}, x={-2:0}] [L1020] head = x VAL [head={-2:0}, x={-2:0}] [L1040] x = head VAL [head={-2:0}, x={-2:0}] [L1043] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=1] [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next VAL [head={-2:0}, x={-2:0}, x->next={-1:0}] [L1049] x = x->next [L1050] COND TRUE \read(*x) VAL [head={-2:0}, x={-1:0}] [L1052] EXPR x->data VAL [head={-2:0}, x={-1:0}, x->data=0] [L1052] COND TRUE x->data != 1 [L1053] reach_error() VAL [head={-2:0}, x={-1:0}] - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 49 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2221 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2221 mSDsluCounter, 2317 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 48 IncrementalHoareTripleChecker+Unchecked, 1479 mSDsCounter, 376 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3635 IncrementalHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 376 mSolverCounterUnsat, 838 mSDtfsCounter, 3635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=13, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 330 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 262 ConstructedInterpolants, 14 QuantifiedInterpolants, 2431 SizeOfPredicates, 23 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 1/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-18 19:19:29,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)