./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_flag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 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/list-ext-properties/list-ext_flag.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 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:07:23,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:07:23,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:07:23,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:07:23,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:07:23,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:07:23,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:07:23,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:07:23,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:07:23,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:07:23,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:07:23,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:07:23,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:07:23,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:07:23,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:07:23,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:07:23,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:07:23,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:07:23,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:07:23,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:07:23,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:07:23,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:07:23,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:07:23,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:07:23,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:07:23,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:07:23,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:07:23,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:07:23,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:07:23,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:07:23,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:07:23,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:07:23,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:07:23,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:07:23,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:07:23,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:07:23,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:07:23,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:07:23,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:07:23,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:07:23,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:07:23,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:07:23,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:07:23,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:07:23,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:07:23,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:07:23,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:07:23,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:07:23,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:07:23,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:07:23,975 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:07:23,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:07:23,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:07:23,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:07:23,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:07:23,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:07:23,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:07:23,976 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:07:23,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:07:23,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:07:23,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:07:23,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:07:23,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:07:23,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:07:23,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:07:23,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:07:23,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:07:23,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:07:23,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3747e65f01c1fbd6eb9d2ad39b0ceed8be631bde45acb074c0903963e660faab [2021-12-21 18:07:24,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:07:24,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:07:24,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:07:24,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:07:24,246 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:07:24,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-12-21 18:07:24,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614b24a11/30b29c8428b54eeb9538a051640f646b/FLAG9d3bc4781 [2021-12-21 18:07:24,732 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:07:24,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag.i [2021-12-21 18:07:24,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614b24a11/30b29c8428b54eeb9538a051640f646b/FLAG9d3bc4781 [2021-12-21 18:07:25,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614b24a11/30b29c8428b54eeb9538a051640f646b [2021-12-21 18:07:25,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:07:25,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:07:25,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:07:25,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:07:25,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:07:25,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f220c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25, skipping insertion in model container [2021-12-21 18:07:25,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:07:25,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:07:25,379 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/list-ext-properties/list-ext_flag.i[23527,23540] [2021-12-21 18:07:25,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:07:25,387 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:07:25,425 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/list-ext-properties/list-ext_flag.i[23527,23540] [2021-12-21 18:07:25,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:07:25,447 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:07:25,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25 WrapperNode [2021-12-21 18:07:25,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:07:25,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:07:25,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:07:25,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:07:25,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,510 INFO L137 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2021-12-21 18:07:25,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:07:25,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:07:25,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:07:25,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:07:25,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:07:25,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:07:25,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:07:25,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:07:25,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (1/1) ... [2021-12-21 18:07:25,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:07:25,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:25,578 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) [2021-12-21 18:07:25,589 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 [2021-12-21 18:07:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-21 18:07:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-21 18:07:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 18:07:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:07:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 18:07:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:07:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:07:25,747 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:07:25,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:07:25,795 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-21 18:07:26,099 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:07:26,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:07:26,107 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 18:07:26,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:07:26 BoogieIcfgContainer [2021-12-21 18:07:26,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:07:26,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:07:26,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:07:26,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:07:26,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:07:25" (1/3) ... [2021-12-21 18:07:26,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295cdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:07:26, skipping insertion in model container [2021-12-21 18:07:26,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:07:25" (2/3) ... [2021-12-21 18:07:26,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295cdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:07:26, skipping insertion in model container [2021-12-21 18:07:26,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:07:26" (3/3) ... [2021-12-21 18:07:26,116 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2021-12-21 18:07:26,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:07:26,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-12-21 18:07:26,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:07:26,152 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 [2021-12-21 18:07:26,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-12-21 18:07:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 55 states have (on average 2.109090909090909) internal successors, (116), 102 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-21 18:07:26,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:26,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-21 18:07:26,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2021-12-21 18:07:26,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116414694] [2021-12-21 18:07:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:26,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:26,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116414694] [2021-12-21 18:07:26,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116414694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:26,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:26,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:07:26,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093441220] [2021-12-21 18:07:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:26,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:07:26,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:07:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:07:26,333 INFO L87 Difference]: Start difference. First operand has 104 states, 55 states have (on average 2.109090909090909) internal successors, (116), 102 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:26,465 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2021-12-21 18:07:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:07:26,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-21 18:07:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:26,473 INFO L225 Difference]: With dead ends: 123 [2021-12-21 18:07:26,473 INFO L226 Difference]: Without dead ends: 116 [2021-12-21 18:07:26,475 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 [2021-12-21 18:07:26,478 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 98 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:26,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 85 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-21 18:07:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2021-12-21 18:07:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 52 states have (on average 2.0) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-12-21 18:07:26,516 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 4 [2021-12-21 18:07:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-12-21 18:07:26,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-12-21 18:07:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-21 18:07:26,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:26,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-21 18:07:26,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 18:07:26,519 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2021-12-21 18:07:26,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:26,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972592587] [2021-12-21 18:07:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:26,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:26,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972592587] [2021-12-21 18:07:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972592587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:26,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:26,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:07:26,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137906403] [2021-12-21 18:07:26,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:26,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:07:26,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:07:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:07:26,601 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:26,673 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-12-21 18:07:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:07:26,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-21 18:07:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:26,677 INFO L225 Difference]: With dead ends: 95 [2021-12-21 18:07:26,677 INFO L226 Difference]: Without dead ends: 95 [2021-12-21 18:07:26,681 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 [2021-12-21 18:07:26,682 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:26,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 65 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-21 18:07:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-21 18:07:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 94 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2021-12-21 18:07:26,705 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 4 [2021-12-21 18:07:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:26,707 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2021-12-21 18:07:26,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2021-12-21 18:07:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:07:26,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:26,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:26,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 18:07:26,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2065304377, now seen corresponding path program 1 times [2021-12-21 18:07:26,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:26,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041882361] [2021-12-21 18:07:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:26,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:26,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:26,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041882361] [2021-12-21 18:07:26,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041882361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:26,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:26,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:07:26,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477402729] [2021-12-21 18:07:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:26,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:07:26,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:07:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:07:26,761 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:26,869 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-12-21 18:07:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:07:26,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:07:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:26,870 INFO L225 Difference]: With dead ends: 105 [2021-12-21 18:07:26,871 INFO L226 Difference]: Without dead ends: 105 [2021-12-21 18:07:26,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:07:26,872 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 166 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:26,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 52 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-21 18:07:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2021-12-21 18:07:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 86 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2021-12-21 18:07:26,883 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 9 [2021-12-21 18:07:26,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:26,883 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2021-12-21 18:07:26,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2021-12-21 18:07:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:07:26,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:26,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:26,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 18:07:26,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2065304378, now seen corresponding path program 1 times [2021-12-21 18:07:26,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:26,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213677801] [2021-12-21 18:07:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:26,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:26,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:26,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213677801] [2021-12-21 18:07:26,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213677801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:26,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:26,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:07:26,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097380935] [2021-12-21 18:07:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:26,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:07:26,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:07:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:07:26,963 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:27,121 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2021-12-21 18:07:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:07:27,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:07:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:27,123 INFO L225 Difference]: With dead ends: 123 [2021-12-21 18:07:27,123 INFO L226 Difference]: Without dead ends: 123 [2021-12-21 18:07:27,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:07:27,132 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 176 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:27,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 62 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-21 18:07:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2021-12-21 18:07:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 107 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-12-21 18:07:27,145 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 9 [2021-12-21 18:07:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:27,145 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-12-21 18:07:27,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-12-21 18:07:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 18:07:27,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:27,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:27,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 18:07:27,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash 990774777, now seen corresponding path program 1 times [2021-12-21 18:07:27,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:27,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648237373] [2021-12-21 18:07:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:27,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:27,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648237373] [2021-12-21 18:07:27,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648237373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:27,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:27,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:07:27,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526178846] [2021-12-21 18:07:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:27,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:07:27,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:07:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:07:27,234 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:27,361 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2021-12-21 18:07:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:07:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-21 18:07:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:27,364 INFO L225 Difference]: With dead ends: 156 [2021-12-21 18:07:27,364 INFO L226 Difference]: Without dead ends: 156 [2021-12-21 18:07:27,364 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 [2021-12-21 18:07:27,365 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 42 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:27,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 250 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-21 18:07:27,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 113. [2021-12-21 18:07:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 112 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-12-21 18:07:27,370 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 15 [2021-12-21 18:07:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:27,370 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-12-21 18:07:27,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-12-21 18:07:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 18:07:27,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:27,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:27,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 18:07:27,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1321200184, now seen corresponding path program 1 times [2021-12-21 18:07:27,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:27,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166399704] [2021-12-21 18:07:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:27,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:27,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166399704] [2021-12-21 18:07:27,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166399704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:27,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:27,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:07:27,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121240440] [2021-12-21 18:07:27,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:27,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:07:27,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:07:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:07:27,455 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-12-21 18:07:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:27,672 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2021-12-21 18:07:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:07:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 [2021-12-21 18:07:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:27,674 INFO L225 Difference]: With dead ends: 169 [2021-12-21 18:07:27,674 INFO L226 Difference]: Without dead ends: 169 [2021-12-21 18:07:27,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:07:27,674 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 138 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:27,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 221 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:07:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-21 18:07:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 113. [2021-12-21 18:07:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 112 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2021-12-21 18:07:27,678 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 17 [2021-12-21 18:07:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:27,678 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2021-12-21 18:07:27,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-12-21 18:07:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2021-12-21 18:07:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 18:07:27,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:27,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:27,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 18:07:27,680 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1496225836, now seen corresponding path program 1 times [2021-12-21 18:07:27,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:27,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688088827] [2021-12-21 18:07:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:27,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:27,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688088827] [2021-12-21 18:07:27,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688088827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:27,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:27,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:07:27,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948743315] [2021-12-21 18:07:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:07:27,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:07:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:07:27,722 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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) [2021-12-21 18:07:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:27,803 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2021-12-21 18:07:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:07:27,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 [2021-12-21 18:07:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:27,804 INFO L225 Difference]: With dead ends: 122 [2021-12-21 18:07:27,804 INFO L226 Difference]: Without dead ends: 122 [2021-12-21 18:07:27,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:07:27,805 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 154 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:27,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 84 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-21 18:07:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2021-12-21 18:07:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-12-21 18:07:27,808 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 19 [2021-12-21 18:07:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:27,809 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-12-21 18:07:27,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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) [2021-12-21 18:07:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-12-21 18:07:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:07:27,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:27,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:27,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 18:07:27,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash 893457289, now seen corresponding path program 1 times [2021-12-21 18:07:27,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:27,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048133051] [2021-12-21 18:07:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:27,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:27,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:27,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048133051] [2021-12-21 18:07:27,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048133051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:27,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:27,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:07:27,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485945813] [2021-12-21 18:07:27,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:27,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:07:27,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:27,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:07:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:07:27,887 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:28,007 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2021-12-21 18:07:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:07:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:07:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:28,008 INFO L225 Difference]: With dead ends: 151 [2021-12-21 18:07:28,008 INFO L226 Difference]: Without dead ends: 141 [2021-12-21 18:07:28,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:07:28,009 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:28,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 201 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-21 18:07:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2021-12-21 18:07:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 118 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2021-12-21 18:07:28,012 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 22 [2021-12-21 18:07:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:28,012 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2021-12-21 18:07:28,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2021-12-21 18:07:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:07:28,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:28,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:28,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 18:07:28,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1991608044, now seen corresponding path program 1 times [2021-12-21 18:07:28,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:28,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394104585] [2021-12-21 18:07:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:28,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:28,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:28,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394104585] [2021-12-21 18:07:28,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394104585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:28,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:28,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:07:28,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603363949] [2021-12-21 18:07:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:28,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:07:28,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:07:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:07:28,088 INFO L87 Difference]: Start difference. First operand 119 states and 135 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:28,247 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2021-12-21 18:07:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:07:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:07:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:28,248 INFO L225 Difference]: With dead ends: 120 [2021-12-21 18:07:28,248 INFO L226 Difference]: Without dead ends: 120 [2021-12-21 18:07:28,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:07:28,249 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 118 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:28,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 185 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-21 18:07:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-12-21 18:07:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 116 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-12-21 18:07:28,252 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 22 [2021-12-21 18:07:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-12-21 18:07:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-12-21 18:07:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:07:28,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:28,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:28,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 18:07:28,254 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1991608043, now seen corresponding path program 1 times [2021-12-21 18:07:28,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:28,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192275290] [2021-12-21 18:07:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:28,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:28,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192275290] [2021-12-21 18:07:28,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192275290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:28,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:28,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:07:28,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148729628] [2021-12-21 18:07:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:28,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:07:28,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:07:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:07:28,327 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:28,514 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-12-21 18:07:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:07:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:07:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:28,515 INFO L225 Difference]: With dead ends: 117 [2021-12-21 18:07:28,515 INFO L226 Difference]: Without dead ends: 117 [2021-12-21 18:07:28,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 18:07:28,516 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 71 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:28,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 253 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-21 18:07:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2021-12-21 18:07:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.369047619047619) internal successors, (115), 99 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2021-12-21 18:07:28,519 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 22 [2021-12-21 18:07:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:28,520 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2021-12-21 18:07:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2021-12-21 18:07:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:07:28,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:28,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:28,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 18:07:28,521 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1076428849, now seen corresponding path program 1 times [2021-12-21 18:07:28,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:28,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021135862] [2021-12-21 18:07:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:28,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:07:28,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:28,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021135862] [2021-12-21 18:07:28,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021135862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:28,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:28,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:07:28,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179572180] [2021-12-21 18:07:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:28,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:07:28,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:07:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:07:28,631 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:28,822 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-12-21 18:07:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:07:28,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-21 18:07:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:28,823 INFO L225 Difference]: With dead ends: 107 [2021-12-21 18:07:28,823 INFO L226 Difference]: Without dead ends: 98 [2021-12-21 18:07:28,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:07:28,824 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 117 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:28,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 296 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-21 18:07:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2021-12-21 18:07:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2021-12-21 18:07:28,826 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 25 [2021-12-21 18:07:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:28,827 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2021-12-21 18:07:28,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2021-12-21 18:07:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 18:07:28,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:28,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:28,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 18:07:28,828 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 762143636, now seen corresponding path program 1 times [2021-12-21 18:07:28,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178737922] [2021-12-21 18:07:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:28,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:28,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:28,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178737922] [2021-12-21 18:07:28,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178737922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595965294] [2021-12-21 18:07:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:28,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:28,899 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) [2021-12-21 18:07:28,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 18:07:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:28,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 18:07:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:29,122 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 [2021-12-21 18:07:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:07:29,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:07:29,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595965294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:29,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:07:29,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-12-21 18:07:29,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944622792] [2021-12-21 18:07:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:29,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:07:29,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:07:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:07:29,139 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:29,256 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2021-12-21 18:07:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:07:29,257 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-21 18:07:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:29,258 INFO L225 Difference]: With dead ends: 140 [2021-12-21 18:07:29,258 INFO L226 Difference]: Without dead ends: 140 [2021-12-21 18:07:29,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:07:29,259 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 43 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:29,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 293 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-21 18:07:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2021-12-21 18:07:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3875) internal successors, (111), 95 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) [2021-12-21 18:07:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-12-21 18:07:29,262 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 28 [2021-12-21 18:07:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:29,262 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-12-21 18:07:29,262 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-12-21 18:07:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 18:07:29,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:29,263 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] [2021-12-21 18:07:29,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:29,483 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,SelfDestructingSolverStorable11 [2021-12-21 18:07:29,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1442202006, now seen corresponding path program 1 times [2021-12-21 18:07:29,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:29,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67121059] [2021-12-21 18:07:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:29,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:29,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:29,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67121059] [2021-12-21 18:07:29,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67121059] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:29,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905057687] [2021-12-21 18:07:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:29,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:29,549 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) [2021-12-21 18:07:29,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 18:07:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:29,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:07:29,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:29,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:29,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905057687] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:29,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:29,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2021-12-21 18:07:29,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856333602] [2021-12-21 18:07:29,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:29,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 18:07:29,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 18:07:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-21 18:07:29,783 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:29,940 INFO L93 Difference]: Finished difference Result 324 states and 370 transitions. [2021-12-21 18:07:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 18:07:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-21 18:07:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:29,942 INFO L225 Difference]: With dead ends: 324 [2021-12-21 18:07:29,942 INFO L226 Difference]: Without dead ends: 324 [2021-12-21 18:07:29,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-21 18:07:29,944 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 325 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:29,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 483 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-12-21 18:07:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 137. [2021-12-21 18:07:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 136 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-12-21 18:07:29,952 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 28 [2021-12-21 18:07:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:29,953 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-12-21 18:07:29,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-12-21 18:07:29,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 18:07:29,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:29,956 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:29,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:30,171 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,SelfDestructingSolverStorable12 [2021-12-21 18:07:30,172 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1992394589, now seen corresponding path program 1 times [2021-12-21 18:07:30,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882094313] [2021-12-21 18:07:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:30,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:30,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:30,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882094313] [2021-12-21 18:07:30,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882094313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:30,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636388270] [2021-12-21 18:07:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:30,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:30,318 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) [2021-12-21 18:07:30,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 18:07:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:30,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-21 18:07:30,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:30,533 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 [2021-12-21 18:07:30,573 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:30,574 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 [2021-12-21 18:07:30,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:30,629 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 [2021-12-21 18:07:30,636 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 13 treesize of output 9 [2021-12-21 18:07:30,669 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 20 treesize of output 8 [2021-12-21 18:07:30,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:30,812 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 [2021-12-21 18:07:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:30,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:30,837 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_359 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_359) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-21 18:07:30,856 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_359 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_359) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-21 18:07:30,861 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_359 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_359) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-21 18:07:30,868 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_359 (Array Int Int)) (v_ArrVal_356 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_356)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_359) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-21 18:07:30,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:30,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:30,934 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 23 treesize of output 29 [2021-12-21 18:07:30,945 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:30,946 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 30 treesize of output 33 [2021-12-21 18:07:30,951 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 9 treesize of output 7 [2021-12-21 18:07:31,128 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:31,128 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 13 treesize of output 12 [2021-12-21 18:07:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:31,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636388270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:31,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:31,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 29 [2021-12-21 18:07:31,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189296969] [2021-12-21 18:07:31,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:31,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-21 18:07:31,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-21 18:07:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=485, Unknown=4, NotChecked=196, Total=812 [2021-12-21 18:07:31,182 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:31,729 INFO L93 Difference]: Finished difference Result 260 states and 288 transitions. [2021-12-21 18:07:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 18:07:31,729 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-12-21 18:07:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:31,730 INFO L225 Difference]: With dead ends: 260 [2021-12-21 18:07:31,730 INFO L226 Difference]: Without dead ends: 260 [2021-12-21 18:07:31,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=675, Unknown=4, NotChecked=236, Total=1122 [2021-12-21 18:07:31,731 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 377 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 658 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:31,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 666 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 687 Invalid, 0 Unknown, 658 Unchecked, 0.4s Time] [2021-12-21 18:07:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-21 18:07:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 153. [2021-12-21 18:07:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 137 states have (on average 1.2846715328467153) internal successors, (176), 152 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 176 transitions. [2021-12-21 18:07:31,735 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 176 transitions. Word has length 30 [2021-12-21 18:07:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:31,735 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 176 transitions. [2021-12-21 18:07:31,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 176 transitions. [2021-12-21 18:07:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 18:07:31,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:31,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:31,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:31,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:31,948 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1992702419, now seen corresponding path program 1 times [2021-12-21 18:07:31,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:31,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11598177] [2021-12-21 18:07:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:31,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:32,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:32,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11598177] [2021-12-21 18:07:32,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11598177] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:32,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244837288] [2021-12-21 18:07:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:32,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:32,210 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) [2021-12-21 18:07:32,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 18:07:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:32,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-21 18:07:32,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:32,354 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 [2021-12-21 18:07:32,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:32,450 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 [2021-12-21 18:07:32,480 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:32,480 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 [2021-12-21 18:07:32,509 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 13 treesize of output 9 [2021-12-21 18:07:32,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:32,524 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 [2021-12-21 18:07:32,539 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 8 [2021-12-21 18:07:32,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:32,615 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 [2021-12-21 18:07:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:32,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:32,665 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:07:32,691 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:07:32,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_436) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:07:32,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 Int) (v_ArrVal_436 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_434)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:07:32,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:32,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:32,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:32,909 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:32,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 41 [2021-12-21 18:07:32,924 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-21 18:07:32,925 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 36 treesize of output 31 [2021-12-21 18:07:32,929 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 11 treesize of output 7 [2021-12-21 18:07:32,938 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:32,938 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 13 treesize of output 12 [2021-12-21 18:07:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:33,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244837288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:33,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:33,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 31 [2021-12-21 18:07:33,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414300460] [2021-12-21 18:07:33,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:33,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-21 18:07:33,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-21 18:07:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=559, Unknown=7, NotChecked=212, Total=930 [2021-12-21 18:07:33,007 INFO L87 Difference]: Start difference. First operand 153 states and 176 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:33,529 INFO L93 Difference]: Finished difference Result 332 states and 376 transitions. [2021-12-21 18:07:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 18:07:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2021-12-21 18:07:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:33,531 INFO L225 Difference]: With dead ends: 332 [2021-12-21 18:07:33,531 INFO L226 Difference]: Without dead ends: 332 [2021-12-21 18:07:33,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=707, Unknown=7, NotChecked=244, Total=1190 [2021-12-21 18:07:33,532 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 727 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:33,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 755 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 637 Invalid, 0 Unknown, 790 Unchecked, 0.4s Time] [2021-12-21 18:07:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-21 18:07:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 153. [2021-12-21 18:07:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 152 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2021-12-21 18:07:33,535 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 30 [2021-12-21 18:07:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:33,535 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2021-12-21 18:07:33,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2021-12-21 18:07:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 18:07:33,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:33,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:33,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:33,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 18:07:33,737 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1374608061, now seen corresponding path program 1 times [2021-12-21 18:07:33,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:33,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100812458] [2021-12-21 18:07:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:33,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:33,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:33,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100812458] [2021-12-21 18:07:33,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100812458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:33,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625330701] [2021-12-21 18:07:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:33,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:33,960 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) [2021-12-21 18:07:33,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 18:07:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:34,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-21 18:07:34,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:34,101 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 [2021-12-21 18:07:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:34,205 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 [2021-12-21 18:07:34,231 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:34,231 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 [2021-12-21 18:07:34,274 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 13 treesize of output 9 [2021-12-21 18:07:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:34,281 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 24 treesize of output 23 [2021-12-21 18:07:34,313 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 20 treesize of output 8 [2021-12-21 18:07:34,370 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 17 treesize of output 19 [2021-12-21 18:07:34,436 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 8 [2021-12-21 18:07:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:34,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:34,534 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:07:34,585 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:07:34,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:07:34,620 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_510)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:07:34,997 INFO L353 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-12-21 18:07:34,997 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 3 case distinctions, treesize of input 31 treesize of output 42 [2021-12-21 18:07:35,010 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-21 18:07:35,011 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 38 treesize of output 33 [2021-12-21 18:07:35,016 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 22 treesize of output 18 [2021-12-21 18:07:35,025 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:35,025 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 13 treesize of output 12 [2021-12-21 18:07:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:35,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625330701] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:35,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:35,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 16] total 38 [2021-12-21 18:07:35,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259210522] [2021-12-21 18:07:35,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:35,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-21 18:07:35,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-21 18:07:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=906, Unknown=18, NotChecked=268, Total=1406 [2021-12-21 18:07:35,144 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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) [2021-12-21 18:07:35,538 WARN L838 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~p~0#1.base|) 1) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (forall ((v_ArrVal_513 (Array Int Int)) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_510)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) is different from false [2021-12-21 18:07:35,871 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (forall ((v_ArrVal_513 (Array Int Int)) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_62| Int)) (or (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_510)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_513) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_62| 4)) 0)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_62|)) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_62| |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) is different from false [2021-12-21 18:07:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:36,376 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2021-12-21 18:07:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 18:07:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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 30 [2021-12-21 18:07:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:36,377 INFO L225 Difference]: With dead ends: 257 [2021-12-21 18:07:36,377 INFO L226 Difference]: Without dead ends: 257 [2021-12-21 18:07:36,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=287, Invalid=1049, Unknown=20, NotChecked=450, Total=1806 [2021-12-21 18:07:36,379 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 562 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1160 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:36,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 869 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 857 Invalid, 0 Unknown, 1160 Unchecked, 0.4s Time] [2021-12-21 18:07:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-21 18:07:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 173. [2021-12-21 18:07:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 157 states have (on average 1.2611464968152866) internal successors, (198), 172 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 198 transitions. [2021-12-21 18:07:36,382 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 198 transitions. Word has length 30 [2021-12-21 18:07:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:36,383 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 198 transitions. [2021-12-21 18:07:36,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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) [2021-12-21 18:07:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 198 transitions. [2021-12-21 18:07:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 18:07:36,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:36,383 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:36,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:36,607 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,SelfDestructingSolverStorable15 [2021-12-21 18:07:36,607 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1374915891, now seen corresponding path program 1 times [2021-12-21 18:07:36,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:36,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666210944] [2021-12-21 18:07:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:36,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:36,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666210944] [2021-12-21 18:07:36,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666210944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075810955] [2021-12-21 18:07:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:36,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:36,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:36,744 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) [2021-12-21 18:07:36,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 18:07:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:36,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-21 18:07:36,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:36,970 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 [2021-12-21 18:07:37,008 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:37,009 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 [2021-12-21 18:07:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:37,057 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 [2021-12-21 18:07:37,062 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 13 treesize of output 9 [2021-12-21 18:07:37,091 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 20 treesize of output 8 [2021-12-21 18:07:37,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:37,216 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 [2021-12-21 18:07:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:37,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:37,245 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_588 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_588) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:07:37,263 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_588 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_588) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:07:37,268 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_588 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_588) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:07:37,275 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_585 Int) (v_ArrVal_588 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_585)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_588) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:07:37,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:37,326 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:37,326 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 23 treesize of output 29 [2021-12-21 18:07:37,334 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:37,334 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 30 treesize of output 33 [2021-12-21 18:07:37,338 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 9 treesize of output 7 [2021-12-21 18:07:37,498 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:37,498 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 13 treesize of output 12 [2021-12-21 18:07:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:37,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075810955] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:37,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:37,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 29 [2021-12-21 18:07:37,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153099301] [2021-12-21 18:07:37,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:37,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-21 18:07:37,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-21 18:07:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=485, Unknown=4, NotChecked=196, Total=812 [2021-12-21 18:07:37,554 INFO L87 Difference]: Start difference. First operand 173 states and 198 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:38,135 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2021-12-21 18:07:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 18:07:38,136 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-12-21 18:07:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:38,137 INFO L225 Difference]: With dead ends: 275 [2021-12-21 18:07:38,137 INFO L226 Difference]: Without dead ends: 275 [2021-12-21 18:07:38,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=759, Unknown=4, NotChecked=252, Total=1260 [2021-12-21 18:07:38,138 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 413 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 767 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:38,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 846 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 886 Invalid, 0 Unknown, 767 Unchecked, 0.4s Time] [2021-12-21 18:07:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-12-21 18:07:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 181. [2021-12-21 18:07:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 165 states have (on average 1.2545454545454546) internal successors, (207), 180 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2021-12-21 18:07:38,147 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 30 [2021-12-21 18:07:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:38,147 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2021-12-21 18:07:38,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2021-12-21 18:07:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 18:07:38,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:38,148 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:38,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:38,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 18:07:38,363 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 864210937, now seen corresponding path program 1 times [2021-12-21 18:07:38,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:38,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072096547] [2021-12-21 18:07:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:38,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:38,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:38,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072096547] [2021-12-21 18:07:38,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072096547] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:38,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899369383] [2021-12-21 18:07:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:38,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:38,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:38,553 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) [2021-12-21 18:07:38,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 18:07:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:38,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 18:07:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:38,775 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:07:38,776 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 [2021-12-21 18:07:38,824 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 13 treesize of output 9 [2021-12-21 18:07:38,935 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:38,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-21 18:07:39,046 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 [2021-12-21 18:07:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:39,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:39,135 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_660 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2021-12-21 18:07:39,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:39,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-21 18:07:39,201 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:39,202 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 40 treesize of output 43 [2021-12-21 18:07:39,205 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 13 treesize of output 9 [2021-12-21 18:07:39,929 INFO L353 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-12-21 18:07:39,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-12-21 18:07:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899369383] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:40,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:40,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2021-12-21 18:07:40,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343726545] [2021-12-21 18:07:40,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 18:07:40,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 18:07:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=816, Unknown=7, NotChecked=60, Total=1056 [2021-12-21 18:07:40,055 INFO L87 Difference]: Start difference. First operand 181 states and 207 transitions. Second operand has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:40,485 INFO L93 Difference]: Finished difference Result 259 states and 289 transitions. [2021-12-21 18:07:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 18:07:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 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 32 [2021-12-21 18:07:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:40,489 INFO L225 Difference]: With dead ends: 259 [2021-12-21 18:07:40,489 INFO L226 Difference]: Without dead ends: 259 [2021-12-21 18:07:40,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1178, Unknown=7, NotChecked=74, Total=1560 [2021-12-21 18:07:40,493 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 492 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 581 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:40,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 543 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 498 Invalid, 0 Unknown, 581 Unchecked, 0.3s Time] [2021-12-21 18:07:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-12-21 18:07:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 184. [2021-12-21 18:07:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 168 states have (on average 1.255952380952381) internal successors, (211), 183 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 211 transitions. [2021-12-21 18:07:40,502 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 211 transitions. Word has length 32 [2021-12-21 18:07:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:40,502 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 211 transitions. [2021-12-21 18:07:40,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 211 transitions. [2021-12-21 18:07:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 18:07:40,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:40,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:40,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:40,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:40,719 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 864210938, now seen corresponding path program 1 times [2021-12-21 18:07:40,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247097086] [2021-12-21 18:07:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:40,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:40,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247097086] [2021-12-21 18:07:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247097086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385863816] [2021-12-21 18:07:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:40,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:40,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:40,966 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) [2021-12-21 18:07:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 18:07:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:41,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-21 18:07:41,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:41,184 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 [2021-12-21 18:07:41,196 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:41,196 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 [2021-12-21 18:07:41,247 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 [2021-12-21 18:07:41,253 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 13 treesize of output 9 [2021-12-21 18:07:41,395 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:41,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-21 18:07:41,399 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 24 [2021-12-21 18:07:41,505 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 [2021-12-21 18:07:41,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 18:07:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:41,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:41,674 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_735 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((v_ArrVal_735 (Array Int Int)) (v_ArrVal_734 (Array Int Int))) (let ((.cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2021-12-21 18:07:41,711 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_735 (Array Int Int)) (v_ArrVal_734 (Array Int Int))) (let ((.cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) (forall ((v_ArrVal_735 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-21 18:07:41,724 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_735 (Array Int Int)) (v_ArrVal_734 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8))) (.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (forall ((v_ArrVal_735 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_735) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-21 18:07:41,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:41,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-21 18:07:41,737 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:41,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-12-21 18:07:41,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:41,745 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 62 treesize of output 65 [2021-12-21 18:07:41,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:41,756 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 96 treesize of output 93 [2021-12-21 18:07:41,760 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 74 treesize of output 66 [2021-12-21 18:07:41,764 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 36 treesize of output 28 [2021-12-21 18:07:41,858 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:41,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-21 18:07:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:41,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:41,863 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-21 18:07:42,049 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:42,050 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 13 treesize of output 12 [2021-12-21 18:07:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:42,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385863816] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:42,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:42,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2021-12-21 18:07:42,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530538973] [2021-12-21 18:07:42,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:42,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-21 18:07:42,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-21 18:07:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=849, Unknown=3, NotChecked=186, Total=1190 [2021-12-21 18:07:42,110 INFO L87 Difference]: Start difference. First operand 184 states and 211 transitions. Second operand has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:43,036 INFO L93 Difference]: Finished difference Result 267 states and 301 transitions. [2021-12-21 18:07:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 18:07:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 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 32 [2021-12-21 18:07:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:43,037 INFO L225 Difference]: With dead ends: 267 [2021-12-21 18:07:43,038 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 18:07:43,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=1924, Unknown=3, NotChecked=288, Total=2652 [2021-12-21 18:07:43,039 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 1088 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 598 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:43,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 619 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 792 Invalid, 0 Unknown, 598 Unchecked, 0.4s Time] [2021-12-21 18:07:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 18:07:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 179. [2021-12-21 18:07:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 166 states have (on average 1.2349397590361446) internal successors, (205), 178 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2021-12-21 18:07:43,043 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 32 [2021-12-21 18:07:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:43,043 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2021-12-21 18:07:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2021-12-21 18:07:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-21 18:07:43,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:43,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:43,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:43,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:43,267 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1554334094, now seen corresponding path program 1 times [2021-12-21 18:07:43,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:43,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590236310] [2021-12-21 18:07:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:43,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:43,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:43,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590236310] [2021-12-21 18:07:43,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590236310] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:43,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905125068] [2021-12-21 18:07:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:43,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:43,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:43,408 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) [2021-12-21 18:07:43,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 18:07:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:43,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-21 18:07:43,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:43,611 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:43,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-21 18:07:43,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-21 18:07:43,796 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:43,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-21 18:07:43,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:43,914 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 30 treesize of output 24 [2021-12-21 18:07:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:43,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:44,108 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (< 0 |ULTIMATE.start_main_~p~0#1.offset|) (< |ULTIMATE.start_main_~p~0#1.offset| 0) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_808) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8)) 0)))) is different from false [2021-12-21 18:07:44,166 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (< 0 |ULTIMATE.start_main_~p~0#1.offset|) (< |ULTIMATE.start_main_~p~0#1.offset| 0) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_808) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8)) 0)))) is different from false [2021-12-21 18:07:44,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_87| Int)) (or (< 0 |v_ULTIMATE.start_main_~p~0#1.offset_87|) (< |v_ULTIMATE.start_main_~p~0#1.offset_87| 0) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_808) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_87| 8)) 0)))) is different from false [2021-12-21 18:07:44,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:44,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-21 18:07:44,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:44,207 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 39 treesize of output 42 [2021-12-21 18:07:44,210 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 22 treesize of output 18 [2021-12-21 18:07:44,452 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:44,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-21 18:07:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905125068] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:44,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:44,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 32 [2021-12-21 18:07:44,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499954301] [2021-12-21 18:07:44,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 18:07:44,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 18:07:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=722, Unknown=3, NotChecked=168, Total=992 [2021-12-21 18:07:44,513 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:45,084 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2021-12-21 18:07:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 18:07:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2021-12-21 18:07:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:45,086 INFO L225 Difference]: With dead ends: 205 [2021-12-21 18:07:45,086 INFO L226 Difference]: Without dead ends: 204 [2021-12-21 18:07:45,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=314, Invalid=1501, Unknown=3, NotChecked=252, Total=2070 [2021-12-21 18:07:45,087 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:45,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 655 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 233 Invalid, 0 Unknown, 361 Unchecked, 0.1s Time] [2021-12-21 18:07:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-21 18:07:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 184. [2021-12-21 18:07:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 171 states have (on average 1.2222222222222223) internal successors, (209), 183 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2021-12-21 18:07:45,095 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 35 [2021-12-21 18:07:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:45,095 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2021-12-21 18:07:45,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2021-12-21 18:07:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 18:07:45,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:45,096 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 18:07:45,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:45,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:45,299 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash 357730772, now seen corresponding path program 1 times [2021-12-21 18:07:45,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:45,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910890652] [2021-12-21 18:07:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:45,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:07:45,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910890652] [2021-12-21 18:07:45,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910890652] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136724832] [2021-12-21 18:07:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:45,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:45,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:45,375 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) [2021-12-21 18:07:45,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 18:07:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:45,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 18:07:45,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:45,584 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 [2021-12-21 18:07:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:45,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:45,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136724832] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:45,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:45,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2021-12-21 18:07:45,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090369089] [2021-12-21 18:07:45,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:45,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 18:07:45,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:45,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 18:07:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-21 18:07:45,695 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:45,962 INFO L93 Difference]: Finished difference Result 427 states and 484 transitions. [2021-12-21 18:07:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 18:07:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-21 18:07:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:45,964 INFO L225 Difference]: With dead ends: 427 [2021-12-21 18:07:45,964 INFO L226 Difference]: Without dead ends: 427 [2021-12-21 18:07:45,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2021-12-21 18:07:45,965 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 635 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:45,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 522 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-21 18:07:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 250. [2021-12-21 18:07:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 237 states have (on average 1.2995780590717299) internal successors, (308), 249 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 308 transitions. [2021-12-21 18:07:45,970 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 308 transitions. Word has length 36 [2021-12-21 18:07:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:45,970 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 308 transitions. [2021-12-21 18:07:45,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 308 transitions. [2021-12-21 18:07:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 18:07:45,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:45,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:45,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:46,187 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,SelfDestructingSolverStorable20 [2021-12-21 18:07:46,187 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:46,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash -929852094, now seen corresponding path program 1 times [2021-12-21 18:07:46,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:46,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297233026] [2021-12-21 18:07:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:46,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 18:07:46,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:46,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297233026] [2021-12-21 18:07:46,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297233026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:07:46,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:07:46,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:07:46,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198396535] [2021-12-21 18:07:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:07:46,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:07:46,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:07:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:07:46,254 INFO L87 Difference]: Start difference. First operand 250 states and 308 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:46,335 INFO L93 Difference]: Finished difference Result 249 states and 306 transitions. [2021-12-21 18:07:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:07:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-21 18:07:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:46,336 INFO L225 Difference]: With dead ends: 249 [2021-12-21 18:07:46,336 INFO L226 Difference]: Without dead ends: 249 [2021-12-21 18:07:46,336 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 [2021-12-21 18:07:46,337 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 5 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:46,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 181 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:07:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-21 18:07:46,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2021-12-21 18:07:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 235 states have (on average 1.297872340425532) internal successors, (305), 247 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 305 transitions. [2021-12-21 18:07:46,341 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 305 transitions. Word has length 37 [2021-12-21 18:07:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:46,342 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 305 transitions. [2021-12-21 18:07:46,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 305 transitions. [2021-12-21 18:07:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 18:07:46,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:46,342 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 18:07:46,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 18:07:46,343 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 208867043, now seen corresponding path program 1 times [2021-12-21 18:07:46,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010635845] [2021-12-21 18:07:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:46,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:46,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010635845] [2021-12-21 18:07:46,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010635845] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94007618] [2021-12-21 18:07:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:46,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:46,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:46,564 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) [2021-12-21 18:07:46,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 18:07:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:46,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 18:07:46,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:46,788 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:46,788 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 [2021-12-21 18:07:46,814 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 [2021-12-21 18:07:46,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 18:07:46,887 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:46,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2021-12-21 18:07:46,891 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 29 treesize of output 19 [2021-12-21 18:07:46,893 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 34 [2021-12-21 18:07:46,975 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 [2021-12-21 18:07:46,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-21 18:07:46,984 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 [2021-12-21 18:07:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:46,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:47,038 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 79 treesize of output 57 [2021-12-21 18:07:47,043 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_986 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_986) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_985 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_985) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-12-21 18:07:47,063 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_985 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem10#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_985) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((v_ArrVal_986 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem10#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_986) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-21 18:07:47,075 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_986 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) v_ArrVal_986) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0)))) (forall ((v_ArrVal_985 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)))) (= .cse1 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_985) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) is different from false [2021-12-21 18:07:47,080 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:47,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-21 18:07:47,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:47,086 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 38 treesize of output 35 [2021-12-21 18:07:47,088 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 11 treesize of output 7 [2021-12-21 18:07:47,112 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-21 18:07:47,113 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 1 case distinctions, treesize of input 22 treesize of output 1 [2021-12-21 18:07:47,276 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:47,276 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 13 treesize of output 12 [2021-12-21 18:07:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:47,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94007618] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:47,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:47,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 28 [2021-12-21 18:07:47,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766599940] [2021-12-21 18:07:47,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:47,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-21 18:07:47,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-21 18:07:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=510, Unknown=3, NotChecked=144, Total=756 [2021-12-21 18:07:47,336 INFO L87 Difference]: Start difference. First operand 248 states and 305 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:47,827 INFO L93 Difference]: Finished difference Result 338 states and 410 transitions. [2021-12-21 18:07:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 18:07:47,828 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-21 18:07:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:47,830 INFO L225 Difference]: With dead ends: 338 [2021-12-21 18:07:47,831 INFO L226 Difference]: Without dead ends: 338 [2021-12-21 18:07:47,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=878, Unknown=3, NotChecked=192, Total=1260 [2021-12-21 18:07:47,832 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 481 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:47,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 641 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 643 Invalid, 0 Unknown, 371 Unchecked, 0.3s Time] [2021-12-21 18:07:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-21 18:07:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 250. [2021-12-21 18:07:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 237 states have (on average 1.2953586497890295) internal successors, (307), 249 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 307 transitions. [2021-12-21 18:07:47,839 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 307 transitions. Word has length 38 [2021-12-21 18:07:47,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:47,840 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 307 transitions. [2021-12-21 18:07:47,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 307 transitions. [2021-12-21 18:07:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 18:07:47,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:47,841 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:07:47,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:48,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-21 18:07:48,055 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1693817782, now seen corresponding path program 1 times [2021-12-21 18:07:48,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:48,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088865765] [2021-12-21 18:07:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:48,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:07:48,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088865765] [2021-12-21 18:07:48,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088865765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020173330] [2021-12-21 18:07:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:48,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:48,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:48,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:07:48,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 18:07:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:48,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-21 18:07:48,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:48,387 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:07:48,387 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 [2021-12-21 18:07:48,428 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 13 treesize of output 9 [2021-12-21 18:07:48,573 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:48,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-21 18:07:48,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:48,783 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 31 treesize of output 25 [2021-12-21 18:07:48,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-21 18:07:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:48,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:49,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1062 Int) (v_ArrVal_1061 (Array Int Int))) (= (select (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1062) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1061) |c_ULTIMATE.start_main_~a~0#1.base|) 8)) 1)) is different from false [2021-12-21 18:07:49,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1062 Int) (v_ArrVal_1061 (Array Int Int))) (= (select (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1062) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1061) |c_ULTIMATE.start_main_~a~0#1.base|) 8)) 1)) is different from false [2021-12-21 18:07:49,187 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1062 Int) (v_ArrVal_1061 (Array Int Int))) (= (select (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1062) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1061) |c_ULTIMATE.start_main_~a~0#1.base|) 8)) 1)) is different from false [2021-12-21 18:07:49,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:49,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-12-21 18:07:49,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:49,200 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 42 treesize of output 45 [2021-12-21 18:07:49,203 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 14 treesize of output 12 [2021-12-21 18:07:51,205 INFO L353 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-12-21 18:07:51,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 185 [2021-12-21 18:07:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 18:07:51,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020173330] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:51,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:51,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 39 [2021-12-21 18:07:51,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260039897] [2021-12-21 18:07:51,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:51,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-21 18:07:51,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-21 18:07:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1120, Unknown=3, NotChecked=210, Total=1482 [2021-12-21 18:07:51,763 INFO L87 Difference]: Start difference. First operand 250 states and 307 transitions. Second operand has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:52,364 INFO L93 Difference]: Finished difference Result 266 states and 322 transitions. [2021-12-21 18:07:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 18:07:52,364 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-21 18:07:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:52,366 INFO L225 Difference]: With dead ends: 266 [2021-12-21 18:07:52,366 INFO L226 Difference]: Without dead ends: 266 [2021-12-21 18:07:52,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=359, Invalid=2200, Unknown=3, NotChecked=300, Total=2862 [2021-12-21 18:07:52,368 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 104 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 544 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:52,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 779 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 340 Invalid, 0 Unknown, 544 Unchecked, 0.2s Time] [2021-12-21 18:07:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-21 18:07:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 245. [2021-12-21 18:07:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 232 states have (on average 1.2974137931034482) internal successors, (301), 244 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 301 transitions. [2021-12-21 18:07:52,372 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 301 transitions. Word has length 38 [2021-12-21 18:07:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:52,372 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 301 transitions. [2021-12-21 18:07:52,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 301 transitions. [2021-12-21 18:07:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 18:07:52,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:52,373 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-12-21 18:07:52,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-21 18:07:52,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-21 18:07:52,599 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 504664910, now seen corresponding path program 1 times [2021-12-21 18:07:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186317907] [2021-12-21 18:07:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:52,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 18:07:52,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:52,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186317907] [2021-12-21 18:07:52,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186317907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:52,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543366675] [2021-12-21 18:07:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:52,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:52,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:52,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:07:52,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 18:07:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:52,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-21 18:07:52,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:53,025 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:53,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2021-12-21 18:07:53,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-21 18:07:53,211 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:07:53,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-21 18:07:53,484 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:53,484 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 30 treesize of output 24 [2021-12-21 18:07:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:53,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:53,723 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1135 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8)) 0)) (< 0 |ULTIMATE.start_main_~p~0#1.offset|) (< |ULTIMATE.start_main_~p~0#1.offset| 0))) is different from false [2021-12-21 18:07:53,759 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1135 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (< 0 |ULTIMATE.start_main_~p~0#1.offset|) (< |ULTIMATE.start_main_~p~0#1.offset| 0) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8)) 0)))) is different from false [2021-12-21 18:07:53,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_114| Int) (v_ArrVal_1135 (Array Int Int))) (or (< 0 |v_ULTIMATE.start_main_~p~0#1.offset_114|) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1135) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_114|)) 0)) (< |v_ULTIMATE.start_main_~p~0#1.offset_114| 0))) is different from false [2021-12-21 18:07:53,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:53,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-21 18:07:53,780 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:53,781 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 39 treesize of output 42 [2021-12-21 18:07:53,786 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 22 treesize of output 18 [2021-12-21 18:07:54,045 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:54,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-21 18:07:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 3 not checked. [2021-12-21 18:07:54,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543366675] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:54,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:54,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 14] total 35 [2021-12-21 18:07:54,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850887964] [2021-12-21 18:07:54,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:54,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-21 18:07:54,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-21 18:07:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=872, Unknown=3, NotChecked=186, Total=1190 [2021-12-21 18:07:54,112 INFO L87 Difference]: Start difference. First operand 245 states and 301 transitions. Second operand has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:07:54,897 INFO L93 Difference]: Finished difference Result 333 states and 404 transitions. [2021-12-21 18:07:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-21 18:07:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 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 43 [2021-12-21 18:07:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:07:54,899 INFO L225 Difference]: With dead ends: 333 [2021-12-21 18:07:54,899 INFO L226 Difference]: Without dead ends: 333 [2021-12-21 18:07:54,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=444, Invalid=2321, Unknown=3, NotChecked=312, Total=3080 [2021-12-21 18:07:54,901 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 203 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:07:54,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1153 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 777 Invalid, 0 Unknown, 686 Unchecked, 0.3s Time] [2021-12-21 18:07:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-21 18:07:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 261. [2021-12-21 18:07:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 248 states have (on average 1.3185483870967742) internal successors, (327), 260 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 327 transitions. [2021-12-21 18:07:54,905 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 327 transitions. Word has length 43 [2021-12-21 18:07:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:07:54,906 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 327 transitions. [2021-12-21 18:07:54,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 35 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:07:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 327 transitions. [2021-12-21 18:07:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 18:07:54,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:07:54,906 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 18:07:54,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 18:07:55,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-21 18:07:55,107 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:07:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:07:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1038799272, now seen corresponding path program 2 times [2021-12-21 18:07:55,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:07:55,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480115655] [2021-12-21 18:07:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:07:55,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:07:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:07:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:55,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:07:55,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480115655] [2021-12-21 18:07:55,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480115655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:07:55,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24183256] [2021-12-21 18:07:55,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:07:55,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:07:55,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:07:55,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:07:55,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 18:07:55,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 18:07:55,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:07:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-21 18:07:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:07:55,533 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 [2021-12-21 18:07:55,568 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:55,568 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 [2021-12-21 18:07:55,607 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 13 treesize of output 9 [2021-12-21 18:07:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:07:55,615 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 [2021-12-21 18:07:55,643 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 20 treesize of output 8 [2021-12-21 18:07:55,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:55,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:55,757 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:07:55,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-21 18:07:55,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:55,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-21 18:07:55,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-21 18:07:55,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:07:55,921 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 [2021-12-21 18:07:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:07:55,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:07:55,939 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-21 18:07:55,966 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-21 18:07:55,970 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-21 18:07:55,973 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1253) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-21 18:07:56,012 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_29| Int) (v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1253) |v_ULTIMATE.start_main_~t~0#1.base_29| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_29|) 0)))) is different from false [2021-12-21 18:07:56,082 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_29| Int) (v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1253) |v_ULTIMATE.start_main_~t~0#1.base_29| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_29|) 0)))) is different from false [2021-12-21 18:07:56,118 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:56,118 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 13 treesize of output 12 [2021-12-21 18:07:56,125 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_29| Int) (v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1248 Int) (v_ArrVal_1253 (Array Int Int))) (or (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_1248)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1253) |v_ULTIMATE.start_main_~t~0#1.base_29| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |v_ULTIMATE.start_main_~t~0#1.base_29| |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-12-21 18:07:56,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:07:56,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:56,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2021-12-21 18:07:56,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:07:56,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 121 [2021-12-21 18:07:56,210 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 106 treesize of output 102 [2021-12-21 18:07:56,213 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 102 treesize of output 94 [2021-12-21 18:07:56,373 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:07:56,373 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 13 treesize of output 12 [2021-12-21 18:07:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2021-12-21 18:07:56,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24183256] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:07:56,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:07:56,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2021-12-21 18:07:56,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847729734] [2021-12-21 18:07:56,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:07:56,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-21 18:07:56,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:07:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-21 18:07:56,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1005, Unknown=13, NotChecked=504, Total=1722 [2021-12-21 18:07:56,417 INFO L87 Difference]: Start difference. First operand 261 states and 327 transitions. Second operand has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:00,239 WARN L838 $PredicateComparison]: unable to prove that (and (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1253) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1255) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:08:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:00,460 INFO L93 Difference]: Finished difference Result 459 states and 567 transitions. [2021-12-21 18:08:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-21 18:08:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 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 43 [2021-12-21 18:08:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:00,462 INFO L225 Difference]: With dead ends: 459 [2021-12-21 18:08:00,462 INFO L226 Difference]: Without dead ends: 459 [2021-12-21 18:08:00,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=518, Invalid=2336, Unknown=40, NotChecked=888, Total=3782 [2021-12-21 18:08:00,464 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 651 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1441 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:00,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 761 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 834 Invalid, 0 Unknown, 1441 Unchecked, 0.4s Time] [2021-12-21 18:08:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-21 18:08:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 282. [2021-12-21 18:08:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 269 states have (on average 1.304832713754647) internal successors, (351), 281 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 351 transitions. [2021-12-21 18:08:00,470 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 351 transitions. Word has length 43 [2021-12-21 18:08:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:00,470 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 351 transitions. [2021-12-21 18:08:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 351 transitions. [2021-12-21 18:08:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 18:08:00,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:00,471 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 18:08:00,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 18:08:00,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:00,687 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1038491442, now seen corresponding path program 2 times [2021-12-21 18:08:00,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:00,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505511206] [2021-12-21 18:08:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:00,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:00,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:08:00,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505511206] [2021-12-21 18:08:00,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505511206] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:08:00,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997623994] [2021-12-21 18:08:00,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:08:00,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:08:00,979 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:08:00,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 18:08:01,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 18:08:01,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:08:01,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-21 18:08:01,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:08:01,142 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 [2021-12-21 18:08:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:08:01,218 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 [2021-12-21 18:08:01,238 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:08:01,238 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 [2021-12-21 18:08:01,261 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 13 treesize of output 9 [2021-12-21 18:08:01,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:08:01,267 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 [2021-12-21 18:08:01,278 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 8 [2021-12-21 18:08:01,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:01,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:01,360 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:08:01,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-21 18:08:01,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-21 18:08:01,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-12-21 18:08:01,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-21 18:08:01,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:01,468 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 [2021-12-21 18:08:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:01,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:08:01,522 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1377) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:08:01,531 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1377 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1377) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:08:01,534 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1377 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1377) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:08:01,546 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1377 (Array Int Int)) (v_ArrVal_1375 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1375) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1377) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0)) is different from false [2021-12-21 18:08:01,744 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:08:01,744 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 13 treesize of output 12 [2021-12-21 18:08:01,753 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1370 Int) (v_ArrVal_1377 (Array Int Int)) (v_ArrVal_1375 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_31| Int)) (or (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_1370)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1375) |v_ULTIMATE.start_main_~t~0#1.base_31| v_ArrVal_1377) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0) (= |v_ULTIMATE.start_main_~t~0#1.base_31| |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-12-21 18:08:02,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:02,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:02,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:02,044 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:02,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-12-21 18:08:02,053 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-21 18:08:02,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2021-12-21 18:08:02,057 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 28 treesize of output 24 [2021-12-21 18:08:02,060 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 50 treesize of output 42 [2021-12-21 18:08:02,066 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:08:02,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-21 18:08:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-21 18:08:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997623994] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:08:02,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:08:02,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 40 [2021-12-21 18:08:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10109772] [2021-12-21 18:08:02,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:08:02,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-21 18:08:02,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:08:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-21 18:08:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=20, NotChecked=350, Total=1560 [2021-12-21 18:08:02,135 INFO L87 Difference]: Start difference. First operand 282 states and 351 transitions. Second operand has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:02,724 INFO L93 Difference]: Finished difference Result 456 states and 568 transitions. [2021-12-21 18:08:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 18:08:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-21 18:08:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:02,728 INFO L225 Difference]: With dead ends: 456 [2021-12-21 18:08:02,728 INFO L226 Difference]: Without dead ends: 456 [2021-12-21 18:08:02,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=20, NotChecked=440, Total=2352 [2021-12-21 18:08:02,729 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 584 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1633 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:02,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 856 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 818 Invalid, 0 Unknown, 1633 Unchecked, 0.3s Time] [2021-12-21 18:08:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-12-21 18:08:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 337. [2021-12-21 18:08:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 324 states have (on average 1.2777777777777777) internal successors, (414), 336 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 414 transitions. [2021-12-21 18:08:02,735 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 414 transitions. Word has length 43 [2021-12-21 18:08:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:02,735 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 414 transitions. [2021-12-21 18:08:02,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 414 transitions. [2021-12-21 18:08:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 18:08:02,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:02,736 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-21 18:08:02,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-21 18:08:02,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 18:08:02,951 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 745076370, now seen corresponding path program 1 times [2021-12-21 18:08:02,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:02,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316720993] [2021-12-21 18:08:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:02,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:03,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:08:03,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316720993] [2021-12-21 18:08:03,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316720993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:08:03,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638101290] [2021-12-21 18:08:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:03,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:03,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:08:03,152 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:08:03,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 18:08:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 18:08:03,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:08:03,368 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 [2021-12-21 18:08:03,405 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:08:03,405 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 [2021-12-21 18:08:03,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:08:03,456 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 [2021-12-21 18:08:03,462 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 13 treesize of output 9 [2021-12-21 18:08:03,492 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 13 [2021-12-21 18:08:03,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:03,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:03,633 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-21 18:08:03,633 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 [2021-12-21 18:08:03,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:03,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 18:08:03,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-12-21 18:08:03,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 18:08:03,856 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 [2021-12-21 18:08:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:03,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:08:03,875 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:08:03,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:08:03,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:08:03,892 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1496) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-21 18:08:03,933 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)))) is different from false [2021-12-21 18:08:03,997 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-21 18:08:04,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:04,139 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:04,139 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 26 treesize of output 32 [2021-12-21 18:08:04,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:04,148 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 60 treesize of output 63 [2021-12-21 18:08:04,152 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 44 [2021-12-21 18:08:04,156 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 22 treesize of output 20 [2021-12-21 18:08:04,535 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-21 18:08:04,535 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 3 case distinctions, treesize of input 22 treesize of output 22 [2021-12-21 18:08:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2021-12-21 18:08:04,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638101290] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:08:04,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:08:04,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2021-12-21 18:08:04,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489748336] [2021-12-21 18:08:04,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:08:04,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-21 18:08:04,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:08:04,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-21 18:08:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1061, Unknown=12, NotChecked=438, Total=1722 [2021-12-21 18:08:04,591 INFO L87 Difference]: Start difference. First operand 337 states and 414 transitions. Second operand has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:07,420 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2021-12-21 18:08:07,463 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1491 Int) (v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) v_ArrVal_1491)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1496) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-21 18:08:07,508 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (= (select (select (store (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-21 18:08:07,520 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-21 18:08:07,535 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1498 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (forall ((v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1496) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_1498) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0))))) is different from false [2021-12-21 18:08:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:07,726 INFO L93 Difference]: Finished difference Result 645 states and 799 transitions. [2021-12-21 18:08:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-21 18:08:07,727 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 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 43 [2021-12-21 18:08:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:07,729 INFO L225 Difference]: With dead ends: 645 [2021-12-21 18:08:07,729 INFO L226 Difference]: Without dead ends: 645 [2021-12-21 18:08:07,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=555, Invalid=2431, Unknown=28, NotChecked=1276, Total=4290 [2021-12-21 18:08:07,731 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 511 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1860 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:07,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 1108 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 940 Invalid, 0 Unknown, 1860 Unchecked, 0.4s Time] [2021-12-21 18:08:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-21 18:08:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 386. [2021-12-21 18:08:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 373 states have (on average 1.2654155495978552) internal successors, (472), 385 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 472 transitions. [2021-12-21 18:08:07,739 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 472 transitions. Word has length 43 [2021-12-21 18:08:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:07,739 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 472 transitions. [2021-12-21 18:08:07,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 42 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 472 transitions. [2021-12-21 18:08:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 18:08:07,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:07,740 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 18:08:07,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 18:08:07,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-21 18:08:07,963 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1853684670, now seen corresponding path program 2 times [2021-12-21 18:08:07,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:07,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988592906] [2021-12-21 18:08:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:07,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:08,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:08:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988592906] [2021-12-21 18:08:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988592906] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:08:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914454526] [2021-12-21 18:08:08,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:08:08,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:08,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:08:08,239 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:08:08,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 18:08:08,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 18:08:08,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:08:08,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-21 18:08:08,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:08:08,491 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:08:08,492 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 [2021-12-21 18:08:08,529 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 13 treesize of output 9 [2021-12-21 18:08:08,625 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:08,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-12-21 18:08:08,660 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:08,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-12-21 18:08:08,673 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:08:08,673 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 [2021-12-21 18:08:08,713 INFO L353 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-12-21 18:08:08,713 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 33 treesize of output 26 [2021-12-21 18:08:08,839 INFO L353 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-21 18:08:08,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 59 [2021-12-21 18:08:08,844 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 22 treesize of output 14 [2021-12-21 18:08:08,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:08,970 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:08,970 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 31 treesize of output 16 [2021-12-21 18:08:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:08,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:08:09,207 INFO L353 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2021-12-21 18:08:09,208 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 31 treesize of output 30 [2021-12-21 18:08:09,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1613 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_130| Int) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (or (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1613) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_130|))) (not (<= |v_ULTIMATE.start_main_~p~0#1.offset_130| |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_130|)))) is different from false [2021-12-21 18:08:09,289 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:09,290 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 20 treesize of output 24 [2021-12-21 18:08:09,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:09,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-21 18:08:09,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:09,656 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 164 treesize of output 161 [2021-12-21 18:08:09,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:09,666 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 152 treesize of output 128 [2021-12-21 18:08:09,670 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 110 treesize of output 94 [2021-12-21 18:08:09,680 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:08:09,680 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 13 treesize of output 12 [2021-12-21 18:08:10,134 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:08:10,134 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 13 treesize of output 12 [2021-12-21 18:08:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 18:08:10,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914454526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:08:10,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:08:10,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 44 [2021-12-21 18:08:10,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740930918] [2021-12-21 18:08:10,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:08:10,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-21 18:08:10,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:08:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-21 18:08:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1682, Unknown=14, NotChecked=84, Total=1980 [2021-12-21 18:08:10,261 INFO L87 Difference]: Start difference. First operand 386 states and 472 transitions. Second operand has 45 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 45 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:10,922 INFO L93 Difference]: Finished difference Result 433 states and 522 transitions. [2021-12-21 18:08:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 18:08:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 45 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 18:08:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:10,929 INFO L225 Difference]: With dead ends: 433 [2021-12-21 18:08:10,929 INFO L226 Difference]: Without dead ends: 433 [2021-12-21 18:08:10,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=430, Invalid=2866, Unknown=14, NotChecked=112, Total=3422 [2021-12-21 18:08:10,932 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 223 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 706 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:10,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 774 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 409 Invalid, 0 Unknown, 706 Unchecked, 0.2s Time] [2021-12-21 18:08:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-21 18:08:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 405. [2021-12-21 18:08:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 392 states have (on average 1.260204081632653) internal successors, (494), 404 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 494 transitions. [2021-12-21 18:08:10,939 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 494 transitions. Word has length 45 [2021-12-21 18:08:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:10,939 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 494 transitions. [2021-12-21 18:08:10,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 45 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 494 transitions. [2021-12-21 18:08:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 18:08:10,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:10,940 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 18:08:10,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 18:08:11,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-21 18:08:11,163 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1853684671, now seen corresponding path program 2 times [2021-12-21 18:08:11,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:11,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003680347] [2021-12-21 18:08:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:11,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:11,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:08:11,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003680347] [2021-12-21 18:08:11,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003680347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:08:11,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603041187] [2021-12-21 18:08:11,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:08:11,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:11,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:08:11,486 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:08:11,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 18:08:11,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 18:08:11,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:08:11,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-21 18:08:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:08:11,757 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:08:11,757 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 [2021-12-21 18:08:11,816 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 [2021-12-21 18:08:11,826 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 13 treesize of output 9 [2021-12-21 18:08:12,043 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:12,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2021-12-21 18:08:12,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:08:12,048 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 16 treesize of output 18 [2021-12-21 18:08:12,150 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:12,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2021-12-21 18:08:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:08:12,155 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 16 treesize of output 18 [2021-12-21 18:08:12,218 INFO L353 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-21 18:08:12,218 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 22 treesize of output 24 [2021-12-21 18:08:12,314 INFO L353 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-12-21 18:08:12,315 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 43 treesize of output 30 [2021-12-21 18:08:12,319 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 16 treesize of output 18 [2021-12-21 18:08:12,739 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-21 18:08:12,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 79 [2021-12-21 18:08:12,745 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 28 treesize of output 30 [2021-12-21 18:08:13,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:13,144 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-21 18:08:13,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 26 [2021-12-21 18:08:13,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:08:13,151 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-21 18:08:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:13,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:08:13,342 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1734 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((v_ArrVal_1735 (Array Int Int)) (v_ArrVal_1734 (Array Int Int))) (let ((.cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2021-12-21 18:08:13,370 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1734 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((v_ArrVal_1735 (Array Int Int)) (v_ArrVal_1734 (Array Int Int))) (let ((.cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_1735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2021-12-21 18:08:13,378 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1735 (Array Int Int)) (v_ArrVal_1734 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8))) (.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (+ 4 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1735) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (forall ((v_ArrVal_1734 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-21 18:08:13,398 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:13,398 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 63 treesize of output 67 [2021-12-21 18:08:13,449 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1734 (Array Int Int)) (v_ArrVal_1731 (Array Int Int))) (<= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1731) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1734) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8))) (forall ((v_ArrVal_1735 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1735) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_2) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_1) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-21 18:08:13,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:13,553 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 53 treesize of output 57 [2021-12-21 18:08:13,565 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 30 treesize of output 22 [2021-12-21 18:08:13,572 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 24 [2021-12-21 18:08:13,595 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 30 treesize of output 22 [2021-12-21 18:08:13,603 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 32 treesize of output 24 [2021-12-21 18:08:13,637 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 30 treesize of output 22 [2021-12-21 18:08:13,644 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 24 [2021-12-21 18:08:13,725 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 30 treesize of output 22 [2021-12-21 18:08:13,735 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 24 [2021-12-21 18:08:13,770 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 30 treesize of output 22 [2021-12-21 18:08:13,778 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 24 [2021-12-21 18:08:13,806 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 30 treesize of output 22 [2021-12-21 18:08:13,812 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 24 [2021-12-21 18:08:13,841 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 30 treesize of output 22 [2021-12-21 18:08:13,848 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 24 [2021-12-21 18:08:13,868 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 30 treesize of output 22 [2021-12-21 18:08:13,875 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 24 [2021-12-21 18:08:13,903 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 30 treesize of output 22 [2021-12-21 18:08:13,909 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 24 [2021-12-21 18:08:13,930 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 30 treesize of output 22 [2021-12-21 18:08:13,937 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 24 [2021-12-21 18:08:13,966 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 30 treesize of output 22 [2021-12-21 18:08:13,972 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 24 [2021-12-21 18:08:13,994 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 30 treesize of output 22 [2021-12-21 18:08:14,002 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 24 [2021-12-21 18:08:14,031 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 30 treesize of output 22 [2021-12-21 18:08:14,038 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 24 [2021-12-21 18:08:14,059 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 30 treesize of output 22 [2021-12-21 18:08:14,065 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 24 [2021-12-21 18:08:14,096 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 30 treesize of output 22 [2021-12-21 18:08:14,104 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 24 [2021-12-21 18:08:14,125 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 30 treesize of output 22 [2021-12-21 18:08:14,133 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 24 [2021-12-21 18:08:14,163 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 30 treesize of output 22 [2021-12-21 18:08:14,170 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 24 [2021-12-21 18:08:14,208 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 30 treesize of output 22 [2021-12-21 18:08:14,214 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 24 [2021-12-21 18:08:14,228 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 24 [2021-12-21 18:08:14,235 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 30 treesize of output 22 [2021-12-21 18:08:14,326 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 38 treesize of output 30 [2021-12-21 18:08:14,334 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 36 treesize of output 28 [2021-12-21 18:08:14,356 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 38 treesize of output 30 [2021-12-21 18:08:14,368 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 36 treesize of output 28 [2021-12-21 18:08:14,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:14,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 81 [2021-12-21 18:08:14,487 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:14,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 81 [2021-12-21 18:08:14,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:14,497 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 365 treesize of output 350 [2021-12-21 18:08:14,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:14,509 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 485 treesize of output 482 [2021-12-21 18:08:14,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:14,520 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 492 treesize of output 420 [2021-12-21 18:08:14,530 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 363 treesize of output 355 [2021-12-21 18:08:14,536 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 355 treesize of output 339 [2021-12-21 18:08:14,543 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 339 treesize of output 331 [2021-12-21 18:08:14,552 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 331 treesize of output 315 [2021-12-21 18:08:14,558 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 315 treesize of output 299 [2021-12-21 18:08:15,283 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-21 18:08:15,284 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 3 case distinctions, treesize of input 22 treesize of output 22 [2021-12-21 18:08:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-21 18:08:15,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603041187] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:08:15,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:08:15,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2021-12-21 18:08:15,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965074017] [2021-12-21 18:08:15,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:08:15,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-21 18:08:15,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:08:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-21 18:08:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1781, Unknown=19, NotChecked=356, Total=2352 [2021-12-21 18:08:15,369 INFO L87 Difference]: Start difference. First operand 405 states and 494 transitions. Second operand has 49 states, 48 states have (on average 2.7083333333333335) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:18,393 INFO L93 Difference]: Finished difference Result 518 states and 625 transitions. [2021-12-21 18:08:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-21 18:08:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7083333333333335) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 18:08:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:18,396 INFO L225 Difference]: With dead ends: 518 [2021-12-21 18:08:18,396 INFO L226 Difference]: Without dead ends: 518 [2021-12-21 18:08:18,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=619, Invalid=4346, Unknown=21, NotChecked=564, Total=5550 [2021-12-21 18:08:18,399 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 466 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1461 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:18,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1292 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 672 Invalid, 0 Unknown, 1461 Unchecked, 0.3s Time] [2021-12-21 18:08:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-21 18:08:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 424. [2021-12-21 18:08:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 411 states have (on average 1.2530413625304135) internal successors, (515), 423 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 515 transitions. [2021-12-21 18:08:18,407 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 515 transitions. Word has length 45 [2021-12-21 18:08:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:18,407 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 515 transitions. [2021-12-21 18:08:18,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7083333333333335) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 515 transitions. [2021-12-21 18:08:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 18:08:18,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:18,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-21 18:08:18,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 18:08:18,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:18,619 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1453916066, now seen corresponding path program 1 times [2021-12-21 18:08:18,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:18,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498056489] [2021-12-21 18:08:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:18,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:18,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:08:18,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498056489] [2021-12-21 18:08:18,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498056489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:08:18,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090237345] [2021-12-21 18:08:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:18,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:08:18,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:08:18,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 18:08:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:08:19,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 18:08:19,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:08:19,231 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:08:19,232 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 [2021-12-21 18:08:19,275 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 13 treesize of output 9 [2021-12-21 18:08:19,401 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:19,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-21 18:08:19,445 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:08:19,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-21 18:08:19,467 INFO L353 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-21 18:08:19,467 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 [2021-12-21 18:08:19,513 INFO L353 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-21 18:08:19,513 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 37 treesize of output 28 [2021-12-21 18:08:19,669 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-21 18:08:19,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2021-12-21 18:08:19,795 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-21 18:08:19,795 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 24 [2021-12-21 18:08:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:08:19,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:08:19,842 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1851 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1851) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2021-12-21 18:08:19,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1851 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_1851) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2021-12-21 18:08:19,895 INFO L353 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2021-12-21 18:08:19,895 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 31 treesize of output 30 [2021-12-21 18:08:19,899 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1851 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 8) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1851) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-21 18:08:19,940 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:19,940 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 20 treesize of output 24 [2021-12-21 18:08:20,101 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:20,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-21 18:08:20,109 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:20,109 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 164 treesize of output 161 [2021-12-21 18:08:20,114 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 142 treesize of output 126 [2021-12-21 18:08:20,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:08:20,122 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 136 treesize of output 112 [2021-12-21 18:08:20,651 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-21 18:08:20,651 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 3 case distinctions, treesize of input 22 treesize of output 22 [2021-12-21 18:08:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-12-21 18:08:20,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090237345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:08:20,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:08:20,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 43 [2021-12-21 18:08:20,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293013245] [2021-12-21 18:08:20,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:08:20,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-21 18:08:20,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:08:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-21 18:08:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1400, Unknown=24, NotChecked=240, Total=1892 [2021-12-21 18:08:20,714 INFO L87 Difference]: Start difference. First operand 424 states and 515 transitions. Second operand has 44 states, 43 states have (on average 2.9302325581395348) internal successors, (126), 44 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:08:21,538 INFO L93 Difference]: Finished difference Result 489 states and 599 transitions. [2021-12-21 18:08:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-21 18:08:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.9302325581395348) internal successors, (126), 44 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 18:08:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:08:21,540 INFO L225 Difference]: With dead ends: 489 [2021-12-21 18:08:21,541 INFO L226 Difference]: Without dead ends: 489 [2021-12-21 18:08:21,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=576, Invalid=2950, Unknown=26, NotChecked=354, Total=3906 [2021-12-21 18:08:21,542 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 405 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:08:21,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1043 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 653 Invalid, 0 Unknown, 1160 Unchecked, 0.3s Time] [2021-12-21 18:08:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-21 18:08:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 424. [2021-12-21 18:08:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 411 states have (on average 1.2506082725060828) internal successors, (514), 423 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 514 transitions. [2021-12-21 18:08:21,548 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 514 transitions. Word has length 45 [2021-12-21 18:08:21,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:08:21,549 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 514 transitions. [2021-12-21 18:08:21,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.9302325581395348) internal successors, (126), 44 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:08:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 514 transitions. [2021-12-21 18:08:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 18:08:21,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:08:21,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-21 18:08:21,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-21 18:08:21,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:08:21,763 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:08:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:08:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1453916065, now seen corresponding path program 1 times [2021-12-21 18:08:21,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:08:21,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832846894] [2021-12-21 18:08:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:08:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:08:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat