./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/merge_sort-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:39:24,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:39:24,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:39:24,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:39:24,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:39:24,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:39:24,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:39:24,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:39:24,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:39:24,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:39:24,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:39:24,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:39:24,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:39:24,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:39:24,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:39:24,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:39:24,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:39:24,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:39:24,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:39:24,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:39:24,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:39:24,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:39:24,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:39:24,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:39:24,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:39:24,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:39:24,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:39:24,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:39:24,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:39:24,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:39:24,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:39:24,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:39:24,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:39:24,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:39:24,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:39:24,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:39:24,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:39:24,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:39:24,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:39:24,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:39:24,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:39:24,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:39:24,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:39:24,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:39:24,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:39:24,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:39:24,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:39:24,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:39:24,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:39:24,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:39:24,874 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:39:24,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:39:24,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:39:24,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:39:24,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:39:24,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:39:24,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:39:24,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:39:24,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:39:24,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:39:24,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:39:24,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:39:24,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:39:24,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:39:24,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:39:24,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:39:24,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c [2021-12-22 16:39:25,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:39:25,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:39:25,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:39:25,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:39:25,112 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:39:25,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-12-22 16:39:25,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f449f245d/09215b92ed3b46d0b6f5767bfb207e1b/FLAGb3d09782d [2021-12-22 16:39:25,523 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:39:25,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-12-22 16:39:25,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f449f245d/09215b92ed3b46d0b6f5767bfb207e1b/FLAGb3d09782d [2021-12-22 16:39:25,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f449f245d/09215b92ed3b46d0b6f5767bfb207e1b [2021-12-22 16:39:25,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:39:25,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:39:25,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:39:25,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:39:25,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:39:25,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:39:25" (1/1) ... [2021-12-22 16:39:25,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55db00ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:25, skipping insertion in model container [2021-12-22 16:39:25,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:39:25" (1/1) ... [2021-12-22 16:39:25,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:39:25,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:39:26,162 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/heap-manipulation/merge_sort-2.i[22632,22645] [2021-12-22 16:39:26,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:39:26,204 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:39:26,230 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/heap-manipulation/merge_sort-2.i[22632,22645] [2021-12-22 16:39:26,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:39:26,257 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:39:26,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26 WrapperNode [2021-12-22 16:39:26,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:39:26,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:39:26,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:39:26,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:39:26,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,295 INFO L137 Inliner]: procedures = 125, calls = 83, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 294 [2021-12-22 16:39:26,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:39:26,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:39:26,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:39:26,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:39:26,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:39:26,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:39:26,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:39:26,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:39:26,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (1/1) ... [2021-12-22 16:39:26,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:39:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:26,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 16:39:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 16:39:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 16:39:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2021-12-22 16:39:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2021-12-22 16:39:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-22 16:39:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-22 16:39:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 16:39:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:39:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:39:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:39:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:39:26,510 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:39:26,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:39:27,081 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:39:27,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:39:27,088 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-12-22 16:39:27,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:39:27 BoogieIcfgContainer [2021-12-22 16:39:27,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:39:27,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:39:27,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:39:27,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:39:27,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:39:25" (1/3) ... [2021-12-22 16:39:27,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585d4d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:39:27, skipping insertion in model container [2021-12-22 16:39:27,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:39:26" (2/3) ... [2021-12-22 16:39:27,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585d4d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:39:27, skipping insertion in model container [2021-12-22 16:39:27,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:39:27" (3/3) ... [2021-12-22 16:39:27,099 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2021-12-22 16:39:27,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:39:27,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2021-12-22 16:39:27,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:39:27,143 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:39:27,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2021-12-22 16:39:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 139 states have (on average 2.194244604316547) internal successors, (305), 259 states have internal predecessors, (305), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 16:39:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:39:27,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:27,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:39:27,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 56404890, now seen corresponding path program 1 times [2021-12-22 16:39:27,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:27,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629428643] [2021-12-22 16:39:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:27,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:27,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:27,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629428643] [2021-12-22 16:39:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629428643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:27,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:27,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:27,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684604620] [2021-12-22 16:39:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:27,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 16:39:27,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 16:39:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 16:39:27,314 INFO L87 Difference]: Start difference. First operand has 262 states, 139 states have (on average 2.194244604316547) internal successors, (305), 259 states have internal predecessors, (305), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:27,344 INFO L93 Difference]: Finished difference Result 260 states and 285 transitions. [2021-12-22 16:39:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 16:39:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 16:39:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:27,355 INFO L225 Difference]: With dead ends: 260 [2021-12-22 16:39:27,355 INFO L226 Difference]: Without dead ends: 258 [2021-12-22 16:39:27,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 16:39:27,360 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:27,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:39:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-22 16:39:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-12-22 16:39:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 137 states have (on average 1.9416058394160585) internal successors, (266), 255 states have internal predecessors, (266), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 283 transitions. [2021-12-22 16:39:27,425 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 283 transitions. Word has length 5 [2021-12-22 16:39:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:27,426 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 283 transitions. [2021-12-22 16:39:27,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 283 transitions. [2021-12-22 16:39:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 16:39:27,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:27,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 16:39:27,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:39:27,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1747491005, now seen corresponding path program 1 times [2021-12-22 16:39:27,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:27,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110934993] [2021-12-22 16:39:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:27,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:27,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:27,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110934993] [2021-12-22 16:39:27,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110934993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:27,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:27,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:27,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388253337] [2021-12-22 16:39:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:27,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:27,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:27,476 INFO L87 Difference]: Start difference. First operand 258 states and 283 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:27,671 INFO L93 Difference]: Finished difference Result 391 states and 435 transitions. [2021-12-22 16:39:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:27,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 16:39:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:27,676 INFO L225 Difference]: With dead ends: 391 [2021-12-22 16:39:27,676 INFO L226 Difference]: Without dead ends: 390 [2021-12-22 16:39:27,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:27,680 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 133 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:27,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 396 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-22 16:39:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 261. [2021-12-22 16:39:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 140 states have (on average 1.9285714285714286) internal successors, (270), 258 states have internal predecessors, (270), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 287 transitions. [2021-12-22 16:39:27,697 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 287 transitions. Word has length 6 [2021-12-22 16:39:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:27,697 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 287 transitions. [2021-12-22 16:39:27,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 287 transitions. [2021-12-22 16:39:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 16:39:27,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:27,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 16:39:27,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:39:27,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1747491563, now seen corresponding path program 1 times [2021-12-22 16:39:27,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:27,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837077876] [2021-12-22 16:39:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:27,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:27,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837077876] [2021-12-22 16:39:27,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837077876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:27,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:27,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:27,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932055058] [2021-12-22 16:39:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:27,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:27,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:27,732 INFO L87 Difference]: Start difference. First operand 261 states and 287 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:27,917 INFO L93 Difference]: Finished difference Result 439 states and 489 transitions. [2021-12-22 16:39:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:27,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 16:39:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:27,920 INFO L225 Difference]: With dead ends: 439 [2021-12-22 16:39:27,920 INFO L226 Difference]: Without dead ends: 439 [2021-12-22 16:39:27,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:27,921 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 199 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:27,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 569 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-22 16:39:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 259. [2021-12-22 16:39:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 140 states have (on average 1.9142857142857144) internal successors, (268), 256 states have internal predecessors, (268), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 285 transitions. [2021-12-22 16:39:27,929 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 285 transitions. Word has length 6 [2021-12-22 16:39:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:27,929 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 285 transitions. [2021-12-22 16:39:27,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 285 transitions. [2021-12-22 16:39:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 16:39:27,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:27,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 16:39:27,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:39:27,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1747491564, now seen corresponding path program 1 times [2021-12-22 16:39:27,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:27,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220546742] [2021-12-22 16:39:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:27,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:27,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:27,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220546742] [2021-12-22 16:39:27,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220546742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:27,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:27,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:27,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811433426] [2021-12-22 16:39:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:27,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:27,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:27,964 INFO L87 Difference]: Start difference. First operand 259 states and 285 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,117 INFO L93 Difference]: Finished difference Result 400 states and 444 transitions. [2021-12-22 16:39:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 16:39:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,119 INFO L225 Difference]: With dead ends: 400 [2021-12-22 16:39:28,119 INFO L226 Difference]: Without dead ends: 400 [2021-12-22 16:39:28,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,120 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 162 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 560 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-22 16:39:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 257. [2021-12-22 16:39:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 140 states have (on average 1.9) internal successors, (266), 254 states have internal predecessors, (266), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2021-12-22 16:39:28,126 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 6 [2021-12-22 16:39:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,127 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2021-12-22 16:39:28,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2021-12-22 16:39:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:39:28,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:39:28,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 6274696, now seen corresponding path program 1 times [2021-12-22 16:39:28,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584479809] [2021-12-22 16:39:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584479809] [2021-12-22 16:39:28,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584479809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:39:28,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112890279] [2021-12-22 16:39:28,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:28,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,167 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,189 INFO L93 Difference]: Finished difference Result 272 states and 296 transitions. [2021-12-22 16:39:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:28,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 16:39:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,191 INFO L225 Difference]: With dead ends: 272 [2021-12-22 16:39:28,191 INFO L226 Difference]: Without dead ends: 271 [2021-12-22 16:39:28,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,192 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 14 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 537 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:39:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-22 16:39:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 256. [2021-12-22 16:39:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 139 states have (on average 1.8992805755395683) internal successors, (264), 253 states have internal predecessors, (264), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2021-12-22 16:39:28,197 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 8 [2021-12-22 16:39:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,197 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2021-12-22 16:39:28,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2021-12-22 16:39:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 16:39:28,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:39:28,198 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash -849555632, now seen corresponding path program 1 times [2021-12-22 16:39:28,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268755079] [2021-12-22 16:39:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268755079] [2021-12-22 16:39:28,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268755079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:28,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203655036] [2021-12-22 16:39:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:28,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,250 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,370 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2021-12-22 16:39:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 16:39:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,372 INFO L225 Difference]: With dead ends: 342 [2021-12-22 16:39:28,372 INFO L226 Difference]: Without dead ends: 342 [2021-12-22 16:39:28,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,374 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 346 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-22 16:39:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 254. [2021-12-22 16:39:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 139 states have (on average 1.8848920863309353) internal successors, (262), 251 states have internal predecessors, (262), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 279 transitions. [2021-12-22 16:39:28,381 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 279 transitions. Word has length 11 [2021-12-22 16:39:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,381 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 279 transitions. [2021-12-22 16:39:28,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 279 transitions. [2021-12-22 16:39:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 16:39:28,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:39:28,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash -849555633, now seen corresponding path program 1 times [2021-12-22 16:39:28,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35076595] [2021-12-22 16:39:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35076595] [2021-12-22 16:39:28,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35076595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:39:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548765935] [2021-12-22 16:39:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:39:28,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:39:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,430 INFO L87 Difference]: Start difference. First operand 254 states and 279 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,581 INFO L93 Difference]: Finished difference Result 377 states and 416 transitions. [2021-12-22 16:39:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:39:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 16:39:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,584 INFO L225 Difference]: With dead ends: 377 [2021-12-22 16:39:28,584 INFO L226 Difference]: Without dead ends: 377 [2021-12-22 16:39:28,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:39:28,585 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 193 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 312 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-22 16:39:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 252. [2021-12-22 16:39:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 139 states have (on average 1.870503597122302) internal successors, (260), 249 states have internal predecessors, (260), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2021-12-22 16:39:28,590 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 11 [2021-12-22 16:39:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,590 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2021-12-22 16:39:28,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2021-12-22 16:39:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 16:39:28,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,590 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:39:28,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash 321246795, now seen corresponding path program 1 times [2021-12-22 16:39:28,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299470419] [2021-12-22 16:39:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299470419] [2021-12-22 16:39:28,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299470419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:39:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050456956] [2021-12-22 16:39:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:39:28,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:39:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:39:28,688 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-12-22 16:39:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,730 INFO L93 Difference]: Finished difference Result 407 states and 447 transitions. [2021-12-22 16:39:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:39:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2021-12-22 16:39:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,732 INFO L225 Difference]: With dead ends: 407 [2021-12-22 16:39:28,732 INFO L226 Difference]: Without dead ends: 407 [2021-12-22 16:39:28,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:28,733 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 602 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 508 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:39:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-22 16:39:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 252. [2021-12-22 16:39:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 139 states have (on average 1.8633093525179856) internal successors, (259), 249 states have internal predecessors, (259), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2021-12-22 16:39:28,748 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 17 [2021-12-22 16:39:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,748 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2021-12-22 16:39:28,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-12-22 16:39:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2021-12-22 16:39:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 16:39:28,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,749 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 16:39:28,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash -519843690, now seen corresponding path program 1 times [2021-12-22 16:39:28,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5736048] [2021-12-22 16:39:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5736048] [2021-12-22 16:39:28,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5736048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:28,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699429009] [2021-12-22 16:39:28,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:28,827 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:28,946 INFO L93 Difference]: Finished difference Result 714 states and 789 transitions. [2021-12-22 16:39:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:39:28,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 16:39:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:28,949 INFO L225 Difference]: With dead ends: 714 [2021-12-22 16:39:28,949 INFO L226 Difference]: Without dead ends: 714 [2021-12-22 16:39:28,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:28,950 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1478 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:28,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 705 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-22 16:39:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 280. [2021-12-22 16:39:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 168 states have (on average 1.8571428571428572) internal successors, (312), 277 states have internal predecessors, (312), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 328 transitions. [2021-12-22 16:39:28,956 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 328 transitions. Word has length 19 [2021-12-22 16:39:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:28,956 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 328 transitions. [2021-12-22 16:39:28,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 328 transitions. [2021-12-22 16:39:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 16:39:28,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:28,957 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:28,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 16:39:28,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash -519854939, now seen corresponding path program 1 times [2021-12-22 16:39:28,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:28,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450572425] [2021-12-22 16:39:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:28,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:28,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:28,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450572425] [2021-12-22 16:39:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450572425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:28,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:39:28,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812606239] [2021-12-22 16:39:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:29,000 INFO L87 Difference]: Start difference. First operand 280 states and 328 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-22 16:39:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:29,298 INFO L93 Difference]: Finished difference Result 466 states and 533 transitions. [2021-12-22 16:39:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:39:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 [2021-12-22 16:39:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:29,300 INFO L225 Difference]: With dead ends: 466 [2021-12-22 16:39:29,300 INFO L226 Difference]: Without dead ends: 466 [2021-12-22 16:39:29,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:29,300 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 646 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:29,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 547 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-22 16:39:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 271. [2021-12-22 16:39:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 168 states have (on average 1.7857142857142858) internal successors, (300), 268 states have internal predecessors, (300), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 316 transitions. [2021-12-22 16:39:29,317 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 316 transitions. Word has length 19 [2021-12-22 16:39:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:29,318 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 316 transitions. [2021-12-22 16:39:29,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-22 16:39:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 316 transitions. [2021-12-22 16:39:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 16:39:29,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:29,318 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:29,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 16:39:29,319 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash -519854938, now seen corresponding path program 1 times [2021-12-22 16:39:29,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713668380] [2021-12-22 16:39:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:29,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:29,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:29,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713668380] [2021-12-22 16:39:29,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713668380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:29,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:29,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:39:29,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202202703] [2021-12-22 16:39:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:29,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:29,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:29,360 INFO L87 Difference]: Start difference. First operand 271 states and 316 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-22 16:39:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:29,639 INFO L93 Difference]: Finished difference Result 606 states and 668 transitions. [2021-12-22 16:39:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:39:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 [2021-12-22 16:39:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:29,641 INFO L225 Difference]: With dead ends: 606 [2021-12-22 16:39:29,641 INFO L226 Difference]: Without dead ends: 606 [2021-12-22 16:39:29,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:29,642 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 891 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:29,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 571 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-22 16:39:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 291. [2021-12-22 16:39:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 188 states have (on average 1.7234042553191489) internal successors, (324), 288 states have internal predecessors, (324), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 340 transitions. [2021-12-22 16:39:29,647 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 340 transitions. Word has length 19 [2021-12-22 16:39:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:29,647 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 340 transitions. [2021-12-22 16:39:29,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-22 16:39:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 340 transitions. [2021-12-22 16:39:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:39:29,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:29,648 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:29,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 16:39:29,648 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1987558854, now seen corresponding path program 1 times [2021-12-22 16:39:29,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:29,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780785995] [2021-12-22 16:39:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:29,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:29,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780785995] [2021-12-22 16:39:29,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780785995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:29,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:29,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:29,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684690657] [2021-12-22 16:39:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:29,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:29,689 INFO L87 Difference]: Start difference. First operand 291 states and 340 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:29,813 INFO L93 Difference]: Finished difference Result 373 states and 428 transitions. [2021-12-22 16:39:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:39:29,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 16:39:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:29,814 INFO L225 Difference]: With dead ends: 373 [2021-12-22 16:39:29,814 INFO L226 Difference]: Without dead ends: 373 [2021-12-22 16:39:29,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:29,815 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 103 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:29,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 838 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-22 16:39:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 290. [2021-12-22 16:39:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 188 states have (on average 1.7127659574468086) internal successors, (322), 287 states have internal predecessors, (322), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 337 transitions. [2021-12-22 16:39:29,820 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 337 transitions. Word has length 26 [2021-12-22 16:39:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 337 transitions. [2021-12-22 16:39:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 337 transitions. [2021-12-22 16:39:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:39:29,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:29,821 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:29,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 16:39:29,822 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1626991364, now seen corresponding path program 1 times [2021-12-22 16:39:29,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:29,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618455472] [2021-12-22 16:39:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:29,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618455472] [2021-12-22 16:39:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618455472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:29,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:29,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:29,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973009983] [2021-12-22 16:39:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:29,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:29,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:29,864 INFO L87 Difference]: Start difference. First operand 290 states and 337 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:29,964 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2021-12-22 16:39:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:39:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 16:39:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:29,966 INFO L225 Difference]: With dead ends: 289 [2021-12-22 16:39:29,966 INFO L226 Difference]: Without dead ends: 289 [2021-12-22 16:39:29,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:29,966 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 19 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:29,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 863 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-22 16:39:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-22 16:39:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 188 states have (on average 1.702127659574468) internal successors, (320), 286 states have internal predecessors, (320), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 334 transitions. [2021-12-22 16:39:29,971 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 334 transitions. Word has length 26 [2021-12-22 16:39:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:29,971 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 334 transitions. [2021-12-22 16:39:29,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 334 transitions. [2021-12-22 16:39:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:39:29,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:29,972 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:29,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 16:39:29,973 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1169692160, now seen corresponding path program 1 times [2021-12-22 16:39:29,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:29,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909724226] [2021-12-22 16:39:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:29,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:30,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909724226] [2021-12-22 16:39:30,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909724226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:30,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:30,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:39:30,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239734760] [2021-12-22 16:39:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:30,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:39:30,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:39:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:39:30,029 INFO L87 Difference]: Start difference. First operand 289 states and 334 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:30,248 INFO L93 Difference]: Finished difference Result 602 states and 659 transitions. [2021-12-22 16:39:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:39:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 16:39:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:30,250 INFO L225 Difference]: With dead ends: 602 [2021-12-22 16:39:30,250 INFO L226 Difference]: Without dead ends: 602 [2021-12-22 16:39:30,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:39:30,251 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1279 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:30,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1037 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-22 16:39:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 289. [2021-12-22 16:39:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 188 states have (on average 1.696808510638298) internal successors, (319), 286 states have internal predecessors, (319), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 333 transitions. [2021-12-22 16:39:30,256 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 333 transitions. Word has length 29 [2021-12-22 16:39:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:30,256 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 333 transitions. [2021-12-22 16:39:30,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 333 transitions. [2021-12-22 16:39:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:39:30,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:30,257 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:30,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 16:39:30,257 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 698957523, now seen corresponding path program 1 times [2021-12-22 16:39:30,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:30,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357115610] [2021-12-22 16:39:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:30,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:30,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357115610] [2021-12-22 16:39:30,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357115610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:30,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:30,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:39:30,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860074736] [2021-12-22 16:39:30,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:30,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:39:30,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:39:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:39:30,303 INFO L87 Difference]: Start difference. First operand 289 states and 333 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:30,521 INFO L93 Difference]: Finished difference Result 601 states and 657 transitions. [2021-12-22 16:39:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:39:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 16:39:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:30,523 INFO L225 Difference]: With dead ends: 601 [2021-12-22 16:39:30,523 INFO L226 Difference]: Without dead ends: 601 [2021-12-22 16:39:30,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:39:30,524 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1275 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:30,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 1037 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-12-22 16:39:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 289. [2021-12-22 16:39:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 188 states have (on average 1.6914893617021276) internal successors, (318), 286 states have internal predecessors, (318), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2021-12-22 16:39:30,528 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 29 [2021-12-22 16:39:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:30,529 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2021-12-22 16:39:30,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2021-12-22 16:39:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:39:30,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:30,529 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:30,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 16:39:30,529 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1900933732, now seen corresponding path program 1 times [2021-12-22 16:39:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:30,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822278899] [2021-12-22 16:39:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:30,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:30,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:30,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822278899] [2021-12-22 16:39:30,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822278899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:30,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:30,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:39:30,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468046978] [2021-12-22 16:39:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:30,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:39:30,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:39:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:30,623 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:31,085 INFO L93 Difference]: Finished difference Result 674 states and 745 transitions. [2021-12-22 16:39:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 16:39:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 16:39:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:31,087 INFO L225 Difference]: With dead ends: 674 [2021-12-22 16:39:31,087 INFO L226 Difference]: Without dead ends: 674 [2021-12-22 16:39:31,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:39:31,088 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1607 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:31,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 806 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:39:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-12-22 16:39:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 290. [2021-12-22 16:39:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.693121693121693) internal successors, (320), 287 states have internal predecessors, (320), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 334 transitions. [2021-12-22 16:39:31,093 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 334 transitions. Word has length 30 [2021-12-22 16:39:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:31,093 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 334 transitions. [2021-12-22 16:39:31,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 334 transitions. [2021-12-22 16:39:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:39:31,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:31,094 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:31,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 16:39:31,094 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:31,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1900933731, now seen corresponding path program 1 times [2021-12-22 16:39:31,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788607360] [2021-12-22 16:39:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:31,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:31,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:31,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788607360] [2021-12-22 16:39:31,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788607360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:31,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:31,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:39:31,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519393373] [2021-12-22 16:39:31,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:31,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:39:31,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:39:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:31,184 INFO L87 Difference]: Start difference. First operand 290 states and 334 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:31,866 INFO L93 Difference]: Finished difference Result 799 states and 878 transitions. [2021-12-22 16:39:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:39:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 16:39:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:31,868 INFO L225 Difference]: With dead ends: 799 [2021-12-22 16:39:31,868 INFO L226 Difference]: Without dead ends: 799 [2021-12-22 16:39:31,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-22 16:39:31,869 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1762 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:31,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 769 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:39:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-12-22 16:39:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 290. [2021-12-22 16:39:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.687830687830688) internal successors, (319), 287 states have internal predecessors, (319), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 333 transitions. [2021-12-22 16:39:31,875 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 333 transitions. Word has length 30 [2021-12-22 16:39:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:31,875 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 333 transitions. [2021-12-22 16:39:31,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 333 transitions. [2021-12-22 16:39:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:39:31,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:31,876 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:31,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 16:39:31,876 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 192556862, now seen corresponding path program 1 times [2021-12-22 16:39:31,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:31,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215376195] [2021-12-22 16:39:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:31,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:31,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:31,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215376195] [2021-12-22 16:39:31,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215376195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:31,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:31,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:39:31,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596531008] [2021-12-22 16:39:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:31,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:39:31,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:31,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:39:31,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:31,949 INFO L87 Difference]: Start difference. First operand 290 states and 333 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:32,446 INFO L93 Difference]: Finished difference Result 672 states and 743 transitions. [2021-12-22 16:39:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 16:39:32,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 16:39:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:32,448 INFO L225 Difference]: With dead ends: 672 [2021-12-22 16:39:32,448 INFO L226 Difference]: Without dead ends: 672 [2021-12-22 16:39:32,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:39:32,449 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1440 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:32,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 981 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:39:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-22 16:39:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 290. [2021-12-22 16:39:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.6825396825396826) internal successors, (318), 287 states have internal predecessors, (318), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 332 transitions. [2021-12-22 16:39:32,453 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 332 transitions. Word has length 30 [2021-12-22 16:39:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:32,454 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 332 transitions. [2021-12-22 16:39:32,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 332 transitions. [2021-12-22 16:39:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:39:32,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:32,454 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:32,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 16:39:32,454 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash 192556863, now seen corresponding path program 1 times [2021-12-22 16:39:32,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:32,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220462529] [2021-12-22 16:39:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:32,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:32,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:32,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220462529] [2021-12-22 16:39:32,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220462529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:32,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:32,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:39:32,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765849659] [2021-12-22 16:39:32,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:32,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:39:32,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:39:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:32,539 INFO L87 Difference]: Start difference. First operand 290 states and 332 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:33,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:33,239 INFO L93 Difference]: Finished difference Result 797 states and 876 transitions. [2021-12-22 16:39:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:39:33,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 16:39:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:33,241 INFO L225 Difference]: With dead ends: 797 [2021-12-22 16:39:33,241 INFO L226 Difference]: Without dead ends: 797 [2021-12-22 16:39:33,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-22 16:39:33,242 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1625 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:33,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 882 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:39:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-22 16:39:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 290. [2021-12-22 16:39:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.6772486772486772) internal successors, (317), 287 states have internal predecessors, (317), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 331 transitions. [2021-12-22 16:39:33,248 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 331 transitions. Word has length 30 [2021-12-22 16:39:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:33,248 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 331 transitions. [2021-12-22 16:39:33,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 331 transitions. [2021-12-22 16:39:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 16:39:33,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:33,249 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 16:39:33,250 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1572782387, now seen corresponding path program 1 times [2021-12-22 16:39:33,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:33,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62150153] [2021-12-22 16:39:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:33,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:33,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:33,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62150153] [2021-12-22 16:39:33,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62150153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:33,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:33,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:39:33,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516849592] [2021-12-22 16:39:33,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:33,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:39:33,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:39:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:39:33,361 INFO L87 Difference]: Start difference. First operand 290 states and 331 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:33,939 INFO L93 Difference]: Finished difference Result 596 states and 651 transitions. [2021-12-22 16:39:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:39:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-22 16:39:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:33,943 INFO L225 Difference]: With dead ends: 596 [2021-12-22 16:39:33,943 INFO L226 Difference]: Without dead ends: 596 [2021-12-22 16:39:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-12-22 16:39:33,946 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1594 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:33,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 1531 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:39:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-22 16:39:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 291. [2021-12-22 16:39:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 190 states have (on average 1.6736842105263159) internal successors, (318), 288 states have internal predecessors, (318), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 332 transitions. [2021-12-22 16:39:33,956 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 332 transitions. Word has length 33 [2021-12-22 16:39:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:33,957 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 332 transitions. [2021-12-22 16:39:33,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 332 transitions. [2021-12-22 16:39:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 16:39:33,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:33,957 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 16:39:33,958 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1614681760, now seen corresponding path program 1 times [2021-12-22 16:39:33,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:33,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972214595] [2021-12-22 16:39:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:33,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:34,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:34,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972214595] [2021-12-22 16:39:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972214595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:34,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:34,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:39:34,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168985347] [2021-12-22 16:39:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:34,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:39:34,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:39:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:39:34,099 INFO L87 Difference]: Start difference. First operand 291 states and 332 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:34,828 INFO L93 Difference]: Finished difference Result 595 states and 649 transitions. [2021-12-22 16:39:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:39:34,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-22 16:39:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:34,830 INFO L225 Difference]: With dead ends: 595 [2021-12-22 16:39:34,830 INFO L226 Difference]: Without dead ends: 595 [2021-12-22 16:39:34,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-12-22 16:39:34,832 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1998 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:34,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1998 Valid, 1374 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:39:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-12-22 16:39:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 291. [2021-12-22 16:39:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 190 states have (on average 1.668421052631579) internal successors, (317), 288 states have internal predecessors, (317), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 331 transitions. [2021-12-22 16:39:34,839 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 331 transitions. Word has length 33 [2021-12-22 16:39:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:34,839 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 331 transitions. [2021-12-22 16:39:34,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 331 transitions. [2021-12-22 16:39:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 16:39:34,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:34,840 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:34,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 16:39:34,840 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:34,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1234347779, now seen corresponding path program 1 times [2021-12-22 16:39:34,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:34,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700572288] [2021-12-22 16:39:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:34,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:34,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700572288] [2021-12-22 16:39:34,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700572288] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:34,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433963599] [2021-12-22 16:39:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:34,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:34,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:34,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:34,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 16:39:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 16:39:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:35,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:35,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:35,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 16:39:35,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 16:39:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:35,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:35,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433963599] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:35,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:35,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 17 [2021-12-22 16:39:35,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128941566] [2021-12-22 16:39:35,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:35,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 16:39:35,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 16:39:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:39:35,594 INFO L87 Difference]: Start difference. First operand 291 states and 331 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:36,065 INFO L93 Difference]: Finished difference Result 486 states and 543 transitions. [2021-12-22 16:39:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:36,066 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-22 16:39:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:36,068 INFO L225 Difference]: With dead ends: 486 [2021-12-22 16:39:36,068 INFO L226 Difference]: Without dead ends: 486 [2021-12-22 16:39:36,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-22 16:39:36,069 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 667 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:36,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 2710 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:39:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-12-22 16:39:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 307. [2021-12-22 16:39:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 206 states have (on average 1.6213592233009708) internal successors, (334), 304 states have internal predecessors, (334), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 348 transitions. [2021-12-22 16:39:36,074 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 348 transitions. Word has length 35 [2021-12-22 16:39:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:36,075 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 348 transitions. [2021-12-22 16:39:36,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 348 transitions. [2021-12-22 16:39:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 16:39:36,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:36,075 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:36,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:36,285 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,SelfDestructingSolverStorable21 [2021-12-22 16:39:36,285 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1275174605, now seen corresponding path program 1 times [2021-12-22 16:39:36,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:36,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119663315] [2021-12-22 16:39:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:36,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:36,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:36,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119663315] [2021-12-22 16:39:36,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119663315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:36,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:36,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:39:36,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399237462] [2021-12-22 16:39:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:36,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:36,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:36,333 INFO L87 Difference]: Start difference. First operand 307 states and 348 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:36,587 INFO L93 Difference]: Finished difference Result 499 states and 544 transitions. [2021-12-22 16:39:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:39:36,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-22 16:39:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:36,589 INFO L225 Difference]: With dead ends: 499 [2021-12-22 16:39:36,589 INFO L226 Difference]: Without dead ends: 499 [2021-12-22 16:39:36,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:36,589 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 479 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:36,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 609 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-22 16:39:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 313. [2021-12-22 16:39:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 212 states have (on average 1.6273584905660377) internal successors, (345), 310 states have internal predecessors, (345), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 359 transitions. [2021-12-22 16:39:36,594 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 359 transitions. Word has length 37 [2021-12-22 16:39:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:36,594 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 359 transitions. [2021-12-22 16:39:36,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 359 transitions. [2021-12-22 16:39:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 16:39:36,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:36,594 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:36,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 16:39:36,594 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1275174606, now seen corresponding path program 1 times [2021-12-22 16:39:36,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:36,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575683041] [2021-12-22 16:39:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:36,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:36,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575683041] [2021-12-22 16:39:36,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575683041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:36,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:36,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:36,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661312365] [2021-12-22 16:39:36,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:36,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:39:36,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:36,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:39:36,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:36,630 INFO L87 Difference]: Start difference. First operand 313 states and 359 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:36,928 INFO L93 Difference]: Finished difference Result 632 states and 714 transitions. [2021-12-22 16:39:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:39:36,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-22 16:39:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:36,931 INFO L225 Difference]: With dead ends: 632 [2021-12-22 16:39:36,931 INFO L226 Difference]: Without dead ends: 632 [2021-12-22 16:39:36,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:36,931 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 995 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:36,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 556 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-12-22 16:39:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 313. [2021-12-22 16:39:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 214 states have (on average 1.6074766355140186) internal successors, (344), 310 states have internal predecessors, (344), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 358 transitions. [2021-12-22 16:39:36,938 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 358 transitions. Word has length 37 [2021-12-22 16:39:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:36,939 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 358 transitions. [2021-12-22 16:39:36,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 358 transitions. [2021-12-22 16:39:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 16:39:36,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:36,939 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:36,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 16:39:36,940 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1375067782, now seen corresponding path program 1 times [2021-12-22 16:39:36,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:36,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975467358] [2021-12-22 16:39:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:36,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:36,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:36,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975467358] [2021-12-22 16:39:36,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975467358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:36,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:36,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:39:36,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574930305] [2021-12-22 16:39:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:36,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:39:36,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:39:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:36,982 INFO L87 Difference]: Start difference. First operand 313 states and 358 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:37,041 INFO L93 Difference]: Finished difference Result 426 states and 467 transitions. [2021-12-22 16:39:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:39:37,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-22 16:39:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:37,044 INFO L225 Difference]: With dead ends: 426 [2021-12-22 16:39:37,044 INFO L226 Difference]: Without dead ends: 426 [2021-12-22 16:39:37,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:39:37,045 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 804 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:37,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 904 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:39:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-12-22 16:39:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 313. [2021-12-22 16:39:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 214 states have (on average 1.602803738317757) internal successors, (343), 310 states have internal predecessors, (343), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 357 transitions. [2021-12-22 16:39:37,049 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 357 transitions. Word has length 39 [2021-12-22 16:39:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:37,050 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 357 transitions. [2021-12-22 16:39:37,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 357 transitions. [2021-12-22 16:39:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 16:39:37,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:37,051 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 16:39:37,051 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1375068993, now seen corresponding path program 1 times [2021-12-22 16:39:37,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:37,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349738455] [2021-12-22 16:39:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:37,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:37,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:37,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349738455] [2021-12-22 16:39:37,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349738455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:37,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:37,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:37,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015792272] [2021-12-22 16:39:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:37,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:39:37,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:39:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:37,087 INFO L87 Difference]: Start difference. First operand 313 states and 357 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:37,367 INFO L93 Difference]: Finished difference Result 573 states and 644 transitions. [2021-12-22 16:39:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:39:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-22 16:39:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:37,369 INFO L225 Difference]: With dead ends: 573 [2021-12-22 16:39:37,369 INFO L226 Difference]: Without dead ends: 573 [2021-12-22 16:39:37,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:37,370 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 466 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:37,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 719 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-22 16:39:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 310. [2021-12-22 16:39:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 214 states have (on average 1.574766355140187) internal successors, (337), 307 states have internal predecessors, (337), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 351 transitions. [2021-12-22 16:39:37,374 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 351 transitions. Word has length 39 [2021-12-22 16:39:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:37,374 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 351 transitions. [2021-12-22 16:39:37,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 351 transitions. [2021-12-22 16:39:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 16:39:37,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:37,374 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:37,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 16:39:37,375 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1375068992, now seen corresponding path program 1 times [2021-12-22 16:39:37,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:37,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305050840] [2021-12-22 16:39:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:37,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:37,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305050840] [2021-12-22 16:39:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305050840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:37,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:37,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:39:37,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030115209] [2021-12-22 16:39:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:37,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:37,450 INFO L87 Difference]: Start difference. First operand 310 states and 351 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:37,776 INFO L93 Difference]: Finished difference Result 418 states and 458 transitions. [2021-12-22 16:39:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:39:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-22 16:39:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:37,778 INFO L225 Difference]: With dead ends: 418 [2021-12-22 16:39:37,778 INFO L226 Difference]: Without dead ends: 418 [2021-12-22 16:39:37,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:39:37,778 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 356 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:37,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 557 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-22 16:39:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 310. [2021-12-22 16:39:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 214 states have (on average 1.560747663551402) internal successors, (334), 307 states have internal predecessors, (334), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 348 transitions. [2021-12-22 16:39:37,782 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 348 transitions. Word has length 39 [2021-12-22 16:39:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:37,782 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 348 transitions. [2021-12-22 16:39:37,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 348 transitions. [2021-12-22 16:39:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 16:39:37,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:37,782 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:37,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 16:39:37,783 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1377050303, now seen corresponding path program 1 times [2021-12-22 16:39:37,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:37,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392280958] [2021-12-22 16:39:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:37,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:37,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392280958] [2021-12-22 16:39:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392280958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:37,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:37,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:39:37,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649669259] [2021-12-22 16:39:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:37,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:39:37,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:39:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:37,835 INFO L87 Difference]: Start difference. First operand 310 states and 348 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:37,940 INFO L93 Difference]: Finished difference Result 541 states and 594 transitions. [2021-12-22 16:39:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:39:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-22 16:39:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:37,942 INFO L225 Difference]: With dead ends: 541 [2021-12-22 16:39:37,942 INFO L226 Difference]: Without dead ends: 541 [2021-12-22 16:39:37,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:39:37,943 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1088 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:37,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1014 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-12-22 16:39:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 310. [2021-12-22 16:39:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 214 states have (on average 1.5560747663551402) internal successors, (333), 307 states have internal predecessors, (333), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 347 transitions. [2021-12-22 16:39:37,947 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 347 transitions. Word has length 39 [2021-12-22 16:39:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:37,947 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 347 transitions. [2021-12-22 16:39:37,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 347 transitions. [2021-12-22 16:39:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 16:39:37,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:37,948 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:37,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 16:39:37,948 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash 718105722, now seen corresponding path program 1 times [2021-12-22 16:39:37,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:37,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319740261] [2021-12-22 16:39:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:37,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:38,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:38,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319740261] [2021-12-22 16:39:38,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319740261] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:38,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566475812] [2021-12-22 16:39:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:38,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:38,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:38,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 16:39:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:38,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-22 16:39:38,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:38,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:38,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:38,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:39:38,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566475812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:38,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 16:39:38,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 15 [2021-12-22 16:39:38,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289010844] [2021-12-22 16:39:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:38,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:39:38,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:39:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-22 16:39:38,525 INFO L87 Difference]: Start difference. First operand 310 states and 347 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:38,812 INFO L93 Difference]: Finished difference Result 547 states and 601 transitions. [2021-12-22 16:39:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 16:39:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:38,814 INFO L225 Difference]: With dead ends: 547 [2021-12-22 16:39:38,814 INFO L226 Difference]: Without dead ends: 547 [2021-12-22 16:39:38,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-12-22 16:39:38,815 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1096 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:38,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 1369 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-12-22 16:39:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 319. [2021-12-22 16:39:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 223 states have (on average 1.5381165919282511) internal successors, (343), 316 states have internal predecessors, (343), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 357 transitions. [2021-12-22 16:39:38,820 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 357 transitions. Word has length 42 [2021-12-22 16:39:38,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:38,820 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 357 transitions. [2021-12-22 16:39:38,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 357 transitions. [2021-12-22 16:39:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 16:39:38,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:38,820 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:38,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:39,036 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,SelfDestructingSolverStorable28 [2021-12-22 16:39:39,036 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash -551533569, now seen corresponding path program 1 times [2021-12-22 16:39:39,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:39,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806548576] [2021-12-22 16:39:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:39,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:39,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806548576] [2021-12-22 16:39:39,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806548576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420577521] [2021-12-22 16:39:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:39,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:39,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:39,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 16:39:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:39,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 16:39:39,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:39,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:39,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:39,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:39,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:39,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420577521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:39,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 12 [2021-12-22 16:39:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842137224] [2021-12-22 16:39:39,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:39,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 16:39:39,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 16:39:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:39:39,664 INFO L87 Difference]: Start difference. First operand 319 states and 357 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:39,881 INFO L93 Difference]: Finished difference Result 386 states and 427 transitions. [2021-12-22 16:39:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:39:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 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 41 [2021-12-22 16:39:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:39,883 INFO L225 Difference]: With dead ends: 386 [2021-12-22 16:39:39,883 INFO L226 Difference]: Without dead ends: 386 [2021-12-22 16:39:39,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-22 16:39:39,884 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 133 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:39,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1689 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-22 16:39:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 334. [2021-12-22 16:39:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 238 states have (on average 1.504201680672269) internal successors, (358), 331 states have internal predecessors, (358), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 372 transitions. [2021-12-22 16:39:39,888 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 372 transitions. Word has length 41 [2021-12-22 16:39:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:39,888 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 372 transitions. [2021-12-22 16:39:39,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 372 transitions. [2021-12-22 16:39:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 16:39:39,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:39,888 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:39,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:40,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:40,101 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:40,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:40,101 INFO L85 PathProgramCache]: Analyzing trace with hash -163923031, now seen corresponding path program 1 times [2021-12-22 16:39:40,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:40,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031788486] [2021-12-22 16:39:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:40,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:40,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031788486] [2021-12-22 16:39:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031788486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:40,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:39:40,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610106191] [2021-12-22 16:39:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:39:40,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:39:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:39:40,257 INFO L87 Difference]: Start difference. First operand 334 states and 372 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:40,659 INFO L93 Difference]: Finished difference Result 423 states and 458 transitions. [2021-12-22 16:39:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:40,660 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 16:39:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:40,661 INFO L225 Difference]: With dead ends: 423 [2021-12-22 16:39:40,661 INFO L226 Difference]: Without dead ends: 423 [2021-12-22 16:39:40,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-22 16:39:40,661 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 911 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:40,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 1740 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-22 16:39:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 337. [2021-12-22 16:39:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 241 states have (on average 1.4979253112033195) internal successors, (361), 334 states have internal predecessors, (361), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 375 transitions. [2021-12-22 16:39:40,665 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 375 transitions. Word has length 45 [2021-12-22 16:39:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:40,666 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 375 transitions. [2021-12-22 16:39:40,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 375 transitions. [2021-12-22 16:39:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 16:39:40,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:40,666 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:40,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 16:39:40,666 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1832676911, now seen corresponding path program 2 times [2021-12-22 16:39:40,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851233961] [2021-12-22 16:39:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:40,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:40,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851233961] [2021-12-22 16:39:40,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851233961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190732260] [2021-12-22 16:39:40,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 16:39:40,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:40,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:40,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 16:39:41,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 16:39:41,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:39:41,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 16:39:41,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:41,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:39:41,049 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:39:41,049 INFO L387 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 [2021-12-22 16:39:41,074 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:39:41,074 INFO L387 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 14 [2021-12-22 16:39:41,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:41,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:39:41,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2021-12-22 16:39:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:41,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:41,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-22 16:39:41,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-12-22 16:39:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:41,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190732260] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:41,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:41,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 23 [2021-12-22 16:39:41,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357602956] [2021-12-22 16:39:41,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:41,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 16:39:41,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 16:39:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-12-22 16:39:41,807 INFO L87 Difference]: Start difference. First operand 337 states and 375 transitions. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:42,812 INFO L93 Difference]: Finished difference Result 621 states and 680 transitions. [2021-12-22 16:39:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 16:39:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 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 46 [2021-12-22 16:39:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:42,816 INFO L225 Difference]: With dead ends: 621 [2021-12-22 16:39:42,816 INFO L226 Difference]: Without dead ends: 621 [2021-12-22 16:39:42,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=292, Invalid=1190, Unknown=0, NotChecked=0, Total=1482 [2021-12-22 16:39:42,818 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1898 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 724 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:42,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 2703 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1703 Invalid, 0 Unknown, 724 Unchecked, 0.6s Time] [2021-12-22 16:39:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-12-22 16:39:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 339. [2021-12-22 16:39:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 243 states have (on average 1.4979423868312758) internal successors, (364), 336 states have internal predecessors, (364), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 378 transitions. [2021-12-22 16:39:42,852 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 378 transitions. Word has length 46 [2021-12-22 16:39:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:42,852 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 378 transitions. [2021-12-22 16:39:42,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 378 transitions. [2021-12-22 16:39:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 16:39:42,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:42,853 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:42,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:43,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:43,053 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:43,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1832676912, now seen corresponding path program 1 times [2021-12-22 16:39:43,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:43,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606490656] [2021-12-22 16:39:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:43,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:43,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606490656] [2021-12-22 16:39:43,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606490656] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310994633] [2021-12-22 16:39:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:43,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:43,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:43,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:43,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 16:39:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:43,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-22 16:39:43,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:43,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:39:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:39:43,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:39:43,502 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:39:43,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-22 16:39:43,557 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:39:43,558 INFO L387 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 14 treesize of output 20 [2021-12-22 16:39:43,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:43,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:43,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:43,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-22 16:39:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:43,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:44,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-12-22 16:39:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310994633] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:44,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:44,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 36 [2021-12-22 16:39:44,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943897126] [2021-12-22 16:39:44,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:44,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-22 16:39:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-22 16:39:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 16:39:44,866 INFO L87 Difference]: Start difference. First operand 339 states and 378 transitions. Second operand has 37 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 37 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) [2021-12-22 16:39:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:47,471 INFO L93 Difference]: Finished difference Result 972 states and 1064 transitions. [2021-12-22 16:39:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-22 16:39:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 37 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) Word has length 46 [2021-12-22 16:39:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:47,474 INFO L225 Difference]: With dead ends: 972 [2021-12-22 16:39:47,474 INFO L226 Difference]: Without dead ends: 972 [2021-12-22 16:39:47,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1133, Invalid=4417, Unknown=0, NotChecked=0, Total=5550 [2021-12-22 16:39:47,476 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 4949 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 4569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 811 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:47,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 3117 Invalid, 4569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3569 Invalid, 0 Unknown, 811 Unchecked, 1.4s Time] [2021-12-22 16:39:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-12-22 16:39:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 355. [2021-12-22 16:39:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 262 states have (on average 1.465648854961832) internal successors, (384), 352 states have internal predecessors, (384), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 398 transitions. [2021-12-22 16:39:47,482 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 398 transitions. Word has length 46 [2021-12-22 16:39:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:47,483 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 398 transitions. [2021-12-22 16:39:47,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 37 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) [2021-12-22 16:39:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 398 transitions. [2021-12-22 16:39:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 16:39:47,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:47,483 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:47,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:47,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-22 16:39:47,701 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:47,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -56370646, now seen corresponding path program 1 times [2021-12-22 16:39:47,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:47,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792447181] [2021-12-22 16:39:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:47,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:47,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792447181] [2021-12-22 16:39:47,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792447181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:47,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:47,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:39:47,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570964566] [2021-12-22 16:39:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:47,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:39:47,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:39:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:47,785 INFO L87 Difference]: Start difference. First operand 355 states and 398 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:48,163 INFO L93 Difference]: Finished difference Result 486 states and 539 transitions. [2021-12-22 16:39:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:48,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 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 48 [2021-12-22 16:39:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:48,165 INFO L225 Difference]: With dead ends: 486 [2021-12-22 16:39:48,165 INFO L226 Difference]: Without dead ends: 486 [2021-12-22 16:39:48,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-22 16:39:48,165 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 265 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:48,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1198 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-12-22 16:39:48,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 358. [2021-12-22 16:39:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 267 states have (on average 1.445692883895131) internal successors, (386), 355 states have internal predecessors, (386), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 400 transitions. [2021-12-22 16:39:48,169 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 400 transitions. Word has length 48 [2021-12-22 16:39:48,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:48,169 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 400 transitions. [2021-12-22 16:39:48,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 400 transitions. [2021-12-22 16:39:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 16:39:48,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:48,170 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:48,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 16:39:48,170 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash -56370645, now seen corresponding path program 1 times [2021-12-22 16:39:48,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636692260] [2021-12-22 16:39:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:48,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636692260] [2021-12-22 16:39:48,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636692260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:48,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:48,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:39:48,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621065021] [2021-12-22 16:39:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:48,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:39:48,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:39:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:39:48,270 INFO L87 Difference]: Start difference. First operand 358 states and 400 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:48,754 INFO L93 Difference]: Finished difference Result 463 states and 505 transitions. [2021-12-22 16:39:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 16:39:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-22 16:39:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:48,756 INFO L225 Difference]: With dead ends: 463 [2021-12-22 16:39:48,756 INFO L226 Difference]: Without dead ends: 463 [2021-12-22 16:39:48,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-22 16:39:48,756 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1078 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:48,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 1221 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-22 16:39:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 361. [2021-12-22 16:39:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 270 states have (on average 1.4407407407407407) internal successors, (389), 358 states have internal predecessors, (389), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 403 transitions. [2021-12-22 16:39:48,778 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 403 transitions. Word has length 48 [2021-12-22 16:39:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:48,778 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 403 transitions. [2021-12-22 16:39:48,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 403 transitions. [2021-12-22 16:39:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 16:39:48,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:48,779 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:48,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 16:39:48,779 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2146523909, now seen corresponding path program 1 times [2021-12-22 16:39:48,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:48,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607051810] [2021-12-22 16:39:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:48,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:49,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607051810] [2021-12-22 16:39:49,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607051810] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510555574] [2021-12-22 16:39:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:49,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:49,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:49,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:49,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 16:39:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:49,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:39:49,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:49,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-12-22 16:39:49,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-22 16:39:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 16:39:49,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 16:39:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510555574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:49,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:49,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2021-12-22 16:39:49,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635505071] [2021-12-22 16:39:49,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:49,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-22 16:39:49,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-22 16:39:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-22 16:39:49,415 INFO L87 Difference]: Start difference. First operand 361 states and 403 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:49,703 INFO L93 Difference]: Finished difference Result 359 states and 397 transitions. [2021-12-22 16:39:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-22 16:39:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:49,705 INFO L225 Difference]: With dead ends: 359 [2021-12-22 16:39:49,705 INFO L226 Difference]: Without dead ends: 359 [2021-12-22 16:39:49,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-12-22 16:39:49,706 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 709 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:49,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 644 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-22 16:39:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2021-12-22 16:39:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 270 states have (on average 1.4259259259259258) internal successors, (385), 356 states have internal predecessors, (385), 10 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 397 transitions. [2021-12-22 16:39:49,717 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 397 transitions. Word has length 50 [2021-12-22 16:39:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:49,717 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 397 transitions. [2021-12-22 16:39:49,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 397 transitions. [2021-12-22 16:39:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 16:39:49,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:49,719 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:49,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 16:39:49,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:49,936 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -755050628, now seen corresponding path program 1 times [2021-12-22 16:39:49,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:49,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128219020] [2021-12-22 16:39:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:49,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:49,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128219020] [2021-12-22 16:39:49,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128219020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:49,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:49,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:39:49,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770754026] [2021-12-22 16:39:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:49,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:39:49,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:39:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:39:49,984 INFO L87 Difference]: Start difference. First operand 359 states and 397 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:50,082 INFO L93 Difference]: Finished difference Result 358 states and 394 transitions. [2021-12-22 16:39:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:39:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-22 16:39:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:50,083 INFO L225 Difference]: With dead ends: 358 [2021-12-22 16:39:50,083 INFO L226 Difference]: Without dead ends: 358 [2021-12-22 16:39:50,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:39:50,084 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 26 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:50,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 823 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:39:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-22 16:39:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-12-22 16:39:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 270 states have (on average 1.4185185185185185) internal successors, (383), 355 states have internal predecessors, (383), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 394 transitions. [2021-12-22 16:39:50,088 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 394 transitions. Word has length 53 [2021-12-22 16:39:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:50,088 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 394 transitions. [2021-12-22 16:39:50,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 394 transitions. [2021-12-22 16:39:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 16:39:50,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:50,089 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:50,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 16:39:50,089 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -162853312, now seen corresponding path program 1 times [2021-12-22 16:39:50,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:50,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021323552] [2021-12-22 16:39:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:50,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:50,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:50,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021323552] [2021-12-22 16:39:50,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021323552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:50,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:50,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:39:50,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828899866] [2021-12-22 16:39:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:50,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:39:50,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:39:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:39:50,192 INFO L87 Difference]: Start difference. First operand 358 states and 394 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:50,604 INFO L93 Difference]: Finished difference Result 474 states and 519 transitions. [2021-12-22 16:39:50,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:50,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2021-12-22 16:39:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:50,606 INFO L225 Difference]: With dead ends: 474 [2021-12-22 16:39:50,606 INFO L226 Difference]: Without dead ends: 474 [2021-12-22 16:39:50,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:39:50,606 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 255 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:50,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1760 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-12-22 16:39:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 357. [2021-12-22 16:39:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 269 states have (on average 1.41635687732342) internal successors, (381), 354 states have internal predecessors, (381), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 392 transitions. [2021-12-22 16:39:50,610 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 392 transitions. Word has length 52 [2021-12-22 16:39:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:50,610 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 392 transitions. [2021-12-22 16:39:50,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 392 transitions. [2021-12-22 16:39:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 16:39:50,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:50,611 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:50,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 16:39:50,611 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 914566065, now seen corresponding path program 2 times [2021-12-22 16:39:50,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:50,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377078689] [2021-12-22 16:39:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:50,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:39:50,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377078689] [2021-12-22 16:39:50,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377078689] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:50,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818521418] [2021-12-22 16:39:50,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 16:39:50,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:50,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:50,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 16:39:50,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 16:39:50,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:39:50,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-22 16:39:50,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:51,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 16:39:51,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 16:39:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 16:39:51,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:39:51,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818521418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:51,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 16:39:51,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-22 16:39:51,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458346035] [2021-12-22 16:39:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:51,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:39:51,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:39:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:39:51,085 INFO L87 Difference]: Start difference. First operand 357 states and 392 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:51,336 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2021-12-22 16:39:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:39:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-22 16:39:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:51,338 INFO L225 Difference]: With dead ends: 446 [2021-12-22 16:39:51,338 INFO L226 Difference]: Without dead ends: 446 [2021-12-22 16:39:51,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-12-22 16:39:51,338 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 184 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:51,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1495 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:39:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-22 16:39:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 361. [2021-12-22 16:39:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 273 states have (on average 1.4102564102564104) internal successors, (385), 358 states have internal predecessors, (385), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 396 transitions. [2021-12-22 16:39:51,342 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 396 transitions. Word has length 52 [2021-12-22 16:39:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:51,342 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 396 transitions. [2021-12-22 16:39:51,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 396 transitions. [2021-12-22 16:39:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 16:39:51,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:51,342 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:51,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-22 16:39:51,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:51,551 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1612035677, now seen corresponding path program 1 times [2021-12-22 16:39:51,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227041767] [2021-12-22 16:39:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:51,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 16:39:51,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227041767] [2021-12-22 16:39:51,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227041767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:51,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:51,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:39:51,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603742166] [2021-12-22 16:39:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:51,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:39:51,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:39:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:39:51,601 INFO L87 Difference]: Start difference. First operand 361 states and 396 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:51,918 INFO L93 Difference]: Finished difference Result 538 states and 590 transitions. [2021-12-22 16:39:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:39:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 55 [2021-12-22 16:39:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:51,919 INFO L225 Difference]: With dead ends: 538 [2021-12-22 16:39:51,920 INFO L226 Difference]: Without dead ends: 538 [2021-12-22 16:39:51,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:39:51,920 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 713 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:51,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 781 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-22 16:39:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 364. [2021-12-22 16:39:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 276 states have (on average 1.4094202898550725) internal successors, (389), 361 states have internal predecessors, (389), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 400 transitions. [2021-12-22 16:39:51,924 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 400 transitions. Word has length 55 [2021-12-22 16:39:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:51,924 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 400 transitions. [2021-12-22 16:39:51,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 400 transitions. [2021-12-22 16:39:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 16:39:51,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:51,924 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:51,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 16:39:51,925 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1612035676, now seen corresponding path program 1 times [2021-12-22 16:39:51,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:51,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746804377] [2021-12-22 16:39:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:51,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 16:39:52,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:52,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746804377] [2021-12-22 16:39:52,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746804377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:39:52,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:39:52,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:39:52,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84691942] [2021-12-22 16:39:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:39:52,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:39:52,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:39:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:39:52,006 INFO L87 Difference]: Start difference. First operand 364 states and 400 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:52,366 INFO L93 Difference]: Finished difference Result 585 states and 637 transitions. [2021-12-22 16:39:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:39:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 55 [2021-12-22 16:39:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:52,368 INFO L225 Difference]: With dead ends: 585 [2021-12-22 16:39:52,368 INFO L226 Difference]: Without dead ends: 585 [2021-12-22 16:39:52,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:39:52,369 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 604 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:52,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 887 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:39:52,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-12-22 16:39:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 381. [2021-12-22 16:39:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 293 states have (on average 1.4129692832764504) internal successors, (414), 378 states have internal predecessors, (414), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 425 transitions. [2021-12-22 16:39:52,373 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 425 transitions. Word has length 55 [2021-12-22 16:39:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:52,373 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 425 transitions. [2021-12-22 16:39:52,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 425 transitions. [2021-12-22 16:39:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 16:39:52,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:52,374 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:52,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 16:39:52,374 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:52,374 INFO L85 PathProgramCache]: Analyzing trace with hash 874630922, now seen corresponding path program 1 times [2021-12-22 16:39:52,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:52,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853043203] [2021-12-22 16:39:52,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:52,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:52,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853043203] [2021-12-22 16:39:52,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853043203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630558839] [2021-12-22 16:39:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:52,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:52,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:52,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 16:39:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:52,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-22 16:39:52,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:52,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:39:52,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 16:39:52,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:39:52,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-22 16:39:52,994 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:39:52,994 INFO L387 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 [2021-12-22 16:39:53,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:53,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:53,118 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-22 16:39:53,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 16:39:53,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:53,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-22 16:39:53,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:53,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:53,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:53,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2021-12-22 16:39:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:53,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:53,841 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:53,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-12-22 16:39:53,895 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_20| Int) (v_arrayElimArr_1 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_20| v_arrayElimArr_1) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_20|) 0)) (not (= (select v_arrayElimArr_1 4) |c_ULTIMATE.start_main_~data~0#1.base|)))) is different from false [2021-12-22 16:39:54,295 INFO L353 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-22 16:39:54,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2021-12-22 16:39:54,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:54,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 73 [2021-12-22 16:39:54,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:54,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2021-12-22 16:39:54,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2021-12-22 16:39:54,532 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 16:39:54,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2021-12-22 16:39:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-22 16:39:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630558839] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:54,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:54,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 18] total 42 [2021-12-22 16:39:54,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110804270] [2021-12-22 16:39:54,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:54,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-22 16:39:54,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-22 16:39:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1488, Unknown=31, NotChecked=78, Total=1722 [2021-12-22 16:39:54,546 INFO L87 Difference]: Start difference. First operand 381 states and 425 transitions. Second operand has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:39:56,327 INFO L93 Difference]: Finished difference Result 621 states and 695 transitions. [2021-12-22 16:39:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-22 16:39:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-22 16:39:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:39:56,329 INFO L225 Difference]: With dead ends: 621 [2021-12-22 16:39:56,329 INFO L226 Difference]: Without dead ends: 621 [2021-12-22 16:39:56,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=562, Invalid=2951, Unknown=31, NotChecked=116, Total=3660 [2021-12-22 16:39:56,331 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1409 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1599 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 16:39:56,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 5178 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1469 Invalid, 0 Unknown, 1599 Unchecked, 0.7s Time] [2021-12-22 16:39:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-12-22 16:39:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 381. [2021-12-22 16:39:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 293 states have (on average 1.4095563139931742) internal successors, (413), 378 states have internal predecessors, (413), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:39:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 424 transitions. [2021-12-22 16:39:56,337 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 424 transitions. Word has length 56 [2021-12-22 16:39:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:39:56,338 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 424 transitions. [2021-12-22 16:39:56,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:39:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 424 transitions. [2021-12-22 16:39:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 16:39:56,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:39:56,339 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:39:56,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-22 16:39:56,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-22 16:39:56,549 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:39:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:39:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1551686691, now seen corresponding path program 1 times [2021-12-22 16:39:56,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:39:56,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482606906] [2021-12-22 16:39:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:56,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:39:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:57,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:39:57,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482606906] [2021-12-22 16:39:57,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482606906] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:39:57,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269660331] [2021-12-22 16:39:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:39:57,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:39:57,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:39:57,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:39:57,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 16:39:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:39:57,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-22 16:39:57,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:39:57,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:39:57,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 16:39:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:39:57,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-22 16:39:57,309 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:39:57,309 INFO L387 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 [2021-12-22 16:39:57,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:57,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:57,431 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-22 16:39:57,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 16:39:57,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-22 16:39:57,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:39:57,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-22 16:39:57,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:39:57,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:57,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2021-12-22 16:39:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:39:57,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:39:58,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:58,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-12-22 16:39:58,110 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_22| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 4) |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_22| v_arrayElimArr_3) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_22|) 0)))) is different from false [2021-12-22 16:39:58,131 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_22| Int) (v_ArrVal_1741 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 4) |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_22|) 0)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~1#1.base| v_ArrVal_1741) |v_ULTIMATE.start_main_~item~0#1.base_22| v_arrayElimArr_3) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 0)))) is different from false [2021-12-22 16:39:58,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~node~1#1.base_20| Int) (|v_ULTIMATE.start_main_~item~0#1.base_22| Int) (v_ArrVal_1741 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_20| 1) |v_ULTIMATE.start_main_~item~0#1.base_22|) 0)) (not (= (select v_arrayElimArr_3 4) |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~node~1#1.base_20| v_ArrVal_1741) |v_ULTIMATE.start_main_~item~0#1.base_22| v_arrayElimArr_3) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_20|) 0)))) is different from false [2021-12-22 16:39:58,295 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~node~1#1.base_20| Int) (|v_ULTIMATE.start_main_~item~0#1.base_22| Int) (v_ArrVal_1741 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_3 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_20| 1) |v_ULTIMATE.start_main_~item~0#1.base_22|) 0)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~node~1#1.base_20| v_ArrVal_1741) |v_ULTIMATE.start_main_~item~0#1.base_22| v_arrayElimArr_3) .cse0) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_20|) 0))))) is different from false [2021-12-22 16:39:58,385 INFO L353 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-22 16:39:58,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2021-12-22 16:39:58,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:58,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 73 [2021-12-22 16:39:58,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2021-12-22 16:39:58,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:39:58,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 59 [2021-12-22 16:39:58,620 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 16:39:58,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2021-12-22 16:39:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-22 16:39:58,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269660331] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:39:58,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:39:58,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 18] total 42 [2021-12-22 16:39:58,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33036805] [2021-12-22 16:39:58,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:39:58,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-22 16:39:58,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:39:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-22 16:39:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1293, Unknown=9, NotChecked=300, Total=1722 [2021-12-22 16:39:58,633 INFO L87 Difference]: Start difference. First operand 381 states and 424 transitions. Second operand has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:00,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:00,631 INFO L93 Difference]: Finished difference Result 731 states and 819 transitions. [2021-12-22 16:40:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 16:40:00,632 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-22 16:40:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:00,633 INFO L225 Difference]: With dead ends: 731 [2021-12-22 16:40:00,633 INFO L226 Difference]: Without dead ends: 731 [2021-12-22 16:40:00,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=493, Invalid=2484, Unknown=9, NotChecked=436, Total=3422 [2021-12-22 16:40:00,635 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1519 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1626 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:00,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 5404 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2024 Invalid, 0 Unknown, 1626 Unchecked, 0.9s Time] [2021-12-22 16:40:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-12-22 16:40:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 381. [2021-12-22 16:40:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 293 states have (on average 1.4061433447098977) internal successors, (412), 378 states have internal predecessors, (412), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:40:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 423 transitions. [2021-12-22 16:40:00,639 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 423 transitions. Word has length 56 [2021-12-22 16:40:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:00,640 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 423 transitions. [2021-12-22 16:40:00,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 423 transitions. [2021-12-22 16:40:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 16:40:00,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:00,641 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:00,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 16:40:00,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:00,841 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:40:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1125924296, now seen corresponding path program 1 times [2021-12-22 16:40:00,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846091131] [2021-12-22 16:40:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:00,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:00,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:00,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846091131] [2021-12-22 16:40:00,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846091131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:40:00,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:40:00,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:40:00,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277189746] [2021-12-22 16:40:00,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:40:00,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:40:00,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:40:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:40:00,869 INFO L87 Difference]: Start difference. First operand 381 states and 423 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:00,932 INFO L93 Difference]: Finished difference Result 491 states and 544 transitions. [2021-12-22 16:40:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:40:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-12-22 16:40:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:00,934 INFO L225 Difference]: With dead ends: 491 [2021-12-22 16:40:00,934 INFO L226 Difference]: Without dead ends: 491 [2021-12-22 16:40:00,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:40:00,934 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 380 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:00,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 495 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:40:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-22 16:40:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 394. [2021-12-22 16:40:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 306 states have (on average 1.4052287581699345) internal successors, (430), 391 states have internal predecessors, (430), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:40:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 441 transitions. [2021-12-22 16:40:00,939 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 441 transitions. Word has length 57 [2021-12-22 16:40:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:00,939 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 441 transitions. [2021-12-22 16:40:00,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 441 transitions. [2021-12-22 16:40:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 16:40:00,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:00,940 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:00,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 16:40:00,940 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:40:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1343539666, now seen corresponding path program 1 times [2021-12-22 16:40:00,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:00,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962489285] [2021-12-22 16:40:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:00,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:01,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962489285] [2021-12-22 16:40:01,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962489285] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630337923] [2021-12-22 16:40:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:01,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:01,358 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:40:01,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 16:40:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:01,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-22 16:40:01,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:01,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:40:01,545 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:40:01,545 INFO L387 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 [2021-12-22 16:40:01,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 16:40:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:01,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-22 16:40:01,669 INFO L353 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-22 16:40:01,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-22 16:40:01,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-22 16:40:01,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-22 16:40:01,827 INFO L353 Elim1Store]: treesize reduction 38, result has 48.6 percent of original size [2021-12-22 16:40:01,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 50 [2021-12-22 16:40:01,924 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-22 16:40:01,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-12-22 16:40:02,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:02,016 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 16:40:02,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 48 [2021-12-22 16:40:02,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 16:40:03,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:40:04,680 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:04,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 44 [2021-12-22 16:40:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:04,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:40:06,463 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_24| Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_24| 1) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24|) 0 |c_ULTIMATE.start_main_~node~1#1.base|) 4 |c_ULTIMATE.start_main_~data~0#1.base|)) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)) 1)) is different from false [2021-12-22 16:40:06,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1895 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_24| Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_24| 1) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~1#1.base| v_ArrVal_1895))) (store .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24| (store (store (select .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24|) 0 |c_ULTIMATE.start_main_~node~1#1.base|) 4 |c_ULTIMATE.start_main_~data~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)) 1)) is different from false [2021-12-22 16:40:06,493 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1895 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_24| Int) (|v_ULTIMATE.start_main_~node~1#1.base_22| Int)) (or (= (select (store (store |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_22| 1) |v_ULTIMATE.start_main_~item~0#1.base_24| 1) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~node~1#1.base_22| v_ArrVal_1895))) (store .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24| (store (store (select .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24|) 0 |v_ULTIMATE.start_main_~node~1#1.base_22|) 4 |c_ULTIMATE.start_main_~data~0#1.base|))) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_22|) 0)))) is different from false [2021-12-22 16:40:06,514 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1895 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_24| Int) (|v_ULTIMATE.start_main_~node~1#1.base_22| Int)) (or (= (select (store (store |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_22| 1) |v_ULTIMATE.start_main_~item~0#1.base_24| 1) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~node~1#1.base_22| v_ArrVal_1895))) (store .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24| (store (store (select .cse0 |v_ULTIMATE.start_main_~item~0#1.base_24|) 0 |v_ULTIMATE.start_main_~node~1#1.base_22|) 4 |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_22|) 0)))) is different from false [2021-12-22 16:40:06,583 INFO L353 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-22 16:40:06,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-12-22 16:40:06,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:06,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 316 [2021-12-22 16:40:06,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 530 treesize of output 516 [2021-12-22 16:40:11,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-22 16:40:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-22 16:40:12,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630337923] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:40:12,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:40:12,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 18] total 49 [2021-12-22 16:40:12,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249158705] [2021-12-22 16:40:12,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:40:12,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-22 16:40:12,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:40:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-22 16:40:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1919, Unknown=4, NotChecked=364, Total=2450 [2021-12-22 16:40:12,315 INFO L87 Difference]: Start difference. First operand 394 states and 441 transitions. Second operand has 50 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:15,089 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|))) (let ((.cse1 (= |c_ULTIMATE.start_main_~node~1#1.base| |c_ULTIMATE.start_main_~item~0#1.base|)) (.cse2 (= (select |c_#valid| |c_ULTIMATE.start_main_~node~1#1.base|) 1)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse3 (= (select |c_#valid| |c_ULTIMATE.start_main_~data~0#1.base|) 1)) (.cse4 (= (select |c_#valid| .cse5) 1))) (and (forall ((|v_ULTIMATE.start_main_~item~0#1.base_24| Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_24| 1) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24|) 0 |c_ULTIMATE.start_main_~node~1#1.base|) 4 |c_ULTIMATE.start_main_~data~0#1.base|)) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)) 1)) (= (select |c_#valid| .cse0) 1) (= |c_ULTIMATE.start_main_~node~1#1.offset| 0) (not (= |c_ULTIMATE.start_main_~node~1#1.base| |c_ULTIMATE.start_main_~data~0#1.base|)) (= |c_ULTIMATE.start_main_~data~0#1.offset| 0) (not .cse1) .cse2 (or (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~data~0#1.base|) .cse3) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|) 1) (or .cse1 .cse2) .cse4 (not (= .cse0 |c_ULTIMATE.start_main_~item~0#1.base|)) .cse3 (not (= .cse5 |c_ULTIMATE.start_main_~data~0#1.base|)) (not (= .cse5 |c_ULTIMATE.start_main_~node~1#1.base|)) (or (= .cse5 |c_ULTIMATE.start_main_~item~0#1.base|) .cse4)))) is different from false [2021-12-22 16:40:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:40:17,509 INFO L93 Difference]: Finished difference Result 733 states and 828 transitions. [2021-12-22 16:40:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-22 16:40:17,510 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 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 57 [2021-12-22 16:40:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:40:17,512 INFO L225 Difference]: With dead ends: 733 [2021-12-22 16:40:17,512 INFO L226 Difference]: Without dead ends: 733 [2021-12-22 16:40:17,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=566, Invalid=3461, Unknown=25, NotChecked=640, Total=4692 [2021-12-22 16:40:17,514 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1629 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 5058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2512 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:40:17,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 4812 Invalid, 5058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2477 Invalid, 0 Unknown, 2512 Unchecked, 1.1s Time] [2021-12-22 16:40:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-12-22 16:40:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 395. [2021-12-22 16:40:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 307 states have (on average 1.4071661237785016) internal successors, (432), 392 states have internal predecessors, (432), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:40:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 443 transitions. [2021-12-22 16:40:17,519 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 443 transitions. Word has length 57 [2021-12-22 16:40:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:40:17,519 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 443 transitions. [2021-12-22 16:40:17,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:40:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 443 transitions. [2021-12-22 16:40:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 16:40:17,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:40:17,522 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:40:17,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-22 16:40:17,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-22 16:40:17,735 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-12-22 16:40:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:40:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1343539667, now seen corresponding path program 1 times [2021-12-22 16:40:17,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:40:17,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508317734] [2021-12-22 16:40:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:17,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:40:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:18,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:40:18,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508317734] [2021-12-22 16:40:18,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508317734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:40:18,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867539270] [2021-12-22 16:40:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:40:18,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:40:18,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:40:18,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:40:18,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 16:40:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:40:18,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-22 16:40:18,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:40:18,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:40:18,505 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:40:18,505 INFO L387 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 14 treesize of output 20 [2021-12-22 16:40:18,521 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:40:18,521 INFO L387 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 [2021-12-22 16:40:18,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 16:40:18,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 16:40:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:18,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-22 16:40:18,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:18,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2021-12-22 16:40:18,672 INFO L353 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-22 16:40:18,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-22 16:40:18,698 INFO L353 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-22 16:40:18,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-22 16:40:18,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-12-22 16:40:18,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:40:18,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:40:18,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-12-22 16:40:18,856 INFO L353 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-22 16:40:18,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-22 16:40:18,878 INFO L353 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-22 16:40:18,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-22 16:40:19,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-22 16:40:19,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:40:19,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-12-22 16:40:19,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-22 16:40:20,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:20,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:20,358 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 16:40:20,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 50 [2021-12-22 16:40:20,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:20,365 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 16:40:20,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-12-22 16:40:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:40:20,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:40:23,226 INFO L353 Elim1Store]: treesize reduction 20, result has 52.4 percent of original size [2021-12-22 16:40:23,227 INFO L387 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 195 treesize of output 195 [2021-12-22 16:40:23,243 INFO L353 Elim1Store]: treesize reduction 20, result has 52.4 percent of original size [2021-12-22 16:40:23,244 INFO L387 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 297 treesize of output 255 [2021-12-22 16:40:23,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:23,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-22 16:40:23,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:23,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-22 16:40:23,462 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:23,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-22 16:40:25,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:25,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-22 16:40:25,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:25,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-22 16:40:25,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:25,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-22 16:40:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:25,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-22 16:40:26,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:26,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:26,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:27,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:27,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:27,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:27,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:27,838 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_6 (Array Int Int)) (v_ArrVal_2032 Int) (v_arrayElimArr_7 (Array Int Int)) (|v_ULTIMATE.start_main_~node~1#1.base_24| Int) (|ULTIMATE.start_inspect_before_~shape#1.offset| Int) (|v_ULTIMATE.start_main_~item~0#1.base_26| Int) (v_ArrVal_2027 Int)) (or (not (<= 0 |ULTIMATE.start_inspect_before_~shape#1.offset|)) (not (= |c_ULTIMATE.start_main_~data~0#1.offset| (select v_arrayElimArr_7 4))) (not (<= (+ 8 |ULTIMATE.start_inspect_before_~shape#1.offset|) v_ArrVal_2032)) (not (<= v_ArrVal_2032 8)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_24| v_ArrVal_2027) |v_ULTIMATE.start_main_~item~0#1.base_26|) 0)) (not (= (select v_arrayElimArr_6 4) |c_ULTIMATE.start_main_~data~0#1.base|)) (and (forall ((v_ArrVal_2026 Int) (v_ArrVal_2031 (Array Int Int)) (v_ArrVal_2030 (Array Int Int))) (let ((.cse2 (+ 4 |ULTIMATE.start_inspect_before_~shape#1.offset|))) (let ((.cse0 (select v_arrayElimArr_6 .cse2)) (.cse1 (select v_arrayElimArr_7 .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~node~1#1.base_24| v_ArrVal_2030) |v_ULTIMATE.start_main_~item~0#1.base_26| v_arrayElimArr_7) .cse0) .cse1) 4) (select (store (store |c_#length| |v_ULTIMATE.start_main_~node~1#1.base_24| v_ArrVal_2026) |v_ULTIMATE.start_main_~item~0#1.base_26| v_ArrVal_2032) (select (select (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~node~1#1.base_24| v_ArrVal_2031) |v_ULTIMATE.start_main_~item~0#1.base_26| v_arrayElimArr_6) .cse0) .cse1)))))) (forall ((v_ArrVal_2030 (Array Int Int))) (<= 0 (let ((.cse3 (+ 4 |ULTIMATE.start_inspect_before_~shape#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~node~1#1.base_24| v_ArrVal_2030) |v_ULTIMATE.start_main_~item~0#1.base_26| v_arrayElimArr_7) (select v_arrayElimArr_6 .cse3)) (select v_arrayElimArr_7 .cse3)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~node~1#1.base_24|) 0)))) is different from false [2021-12-22 16:40:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:27,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:28,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:28,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:28,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:28,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-12-22 16:40:28,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:28,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-22 16:40:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-22 16:40:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-12-22 16:40:29,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:29,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 116 [2021-12-22 16:40:29,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:29,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 126 [2021-12-22 16:40:29,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 511 treesize of output 477 [2021-12-22 16:40:29,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1425 treesize of output 1319 [2021-12-22 16:40:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,666 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:29,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1325 treesize of output 989 [2021-12-22 16:40:29,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:40:29,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,704 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:40:29,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1118 treesize of output 1096 [2021-12-22 16:40:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:40:29,718 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:40:29,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1102 treesize of output 918 [2021-12-22 16:40:29,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 857 treesize of output 841 [2021-12-22 16:40:29,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 841 treesize of output 825 [2021-12-22 16:40:29,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 825 treesize of output 821