./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/shared_mem2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/shared_mem2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:39:06,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:39:06,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:39:06,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:39:06,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:39:06,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:39:06,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:39:06,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:39:06,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:39:06,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:39:06,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:39:06,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:39:06,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:39:06,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:39:06,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:39:06,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:39:06,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:39:06,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:39:06,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:39:06,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:39:06,818 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:39:06,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:39:06,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:39:06,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:39:06,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:39:06,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:39:06,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:39:06,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:39:06,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:39:06,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:39:06,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:39:06,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:39:06,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:39:06,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:39:06,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:39:06,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:39:06,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:39:06,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:39:06,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:39:06,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:39:06,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:39:06,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:39:06,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:39:06,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:39:06,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:39:06,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:39:06,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:39:06,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:39:06,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:39:06,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:39:06,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:39:06,879 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:39:06,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:39:06,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:39:06,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:39:06,881 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:39:06,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:39:06,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:39:06,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:39:06,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:39:06,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:39:06,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:39:06,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:39:06,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:39:06,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:39:06,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:39:06,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:39:06,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:39:06,884 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:39:06,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:39:06,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:39:06,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 [2022-07-12 03:39:07,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:39:07,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:39:07,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:39:07,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:39:07,171 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:39:07,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem2.i [2022-07-12 03:39:07,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3719c9db/ecbff5915a514d68ac80d50d0a2d1da5/FLAG502509199 [2022-07-12 03:39:07,696 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:39:07,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem2.i [2022-07-12 03:39:07,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3719c9db/ecbff5915a514d68ac80d50d0a2d1da5/FLAG502509199 [2022-07-12 03:39:08,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3719c9db/ecbff5915a514d68ac80d50d0a2d1da5 [2022-07-12 03:39:08,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:39:08,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:39:08,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:39:08,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:39:08,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:39:08,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2c837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08, skipping insertion in model container [2022-07-12 03:39:08,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:39:08,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:39:08,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2022-07-12 03:39:08,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:39:08,458 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:39:08,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2022-07-12 03:39:08,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:39:08,535 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:39:08,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08 WrapperNode [2022-07-12 03:39:08,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:39:08,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:39:08,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:39:08,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:39:08,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,587 INFO L137 Inliner]: procedures = 121, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2022-07-12 03:39:08,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:39:08,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:39:08,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:39:08,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:39:08,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:39:08,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:39:08,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:39:08,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:39:08,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (1/1) ... [2022-07-12 03:39:08,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:39:08,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:08,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:39:08,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:39:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:39:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 03:39:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:39:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:39:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:39:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:39:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:39:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:39:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:39:08,848 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:39:08,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:39:09,067 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:39:09,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:39:09,073 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 03:39:09,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:39:09 BoogieIcfgContainer [2022-07-12 03:39:09,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:39:09,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:39:09,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:39:09,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:39:09,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:39:08" (1/3) ... [2022-07-12 03:39:09,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4882317a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:39:09, skipping insertion in model container [2022-07-12 03:39:09,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:39:08" (2/3) ... [2022-07-12 03:39:09,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4882317a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:39:09, skipping insertion in model container [2022-07-12 03:39:09,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:39:09" (3/3) ... [2022-07-12 03:39:09,083 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2022-07-12 03:39:09,097 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:39:09,098 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:39:09,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:39:09,161 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57a9546b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64e978a [2022-07-12 03:39:09,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:39:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 03:39:09,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:09,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:09,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 561717608, now seen corresponding path program 1 times [2022-07-12 03:39:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:09,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821979462] [2022-07-12 03:39:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821979462] [2022-07-12 03:39:09,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821979462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:39:09,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:39:09,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:39:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802165487] [2022-07-12 03:39:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:39:09,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:39:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:39:09,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:39:09,470 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:09,483 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-12 03:39:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:39:09,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 03:39:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:09,493 INFO L225 Difference]: With dead ends: 29 [2022-07-12 03:39:09,493 INFO L226 Difference]: Without dead ends: 14 [2022-07-12 03:39:09,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:39:09,499 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:09,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:39:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-12 03:39:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-12 03:39:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-12 03:39:09,527 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-07-12 03:39:09,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:09,527 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-12 03:39:09,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-07-12 03:39:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 03:39:09,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:09,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:09,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:39:09,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -861307399, now seen corresponding path program 1 times [2022-07-12 03:39:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53630887] [2022-07-12 03:39:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:09,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53630887] [2022-07-12 03:39:09,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53630887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:39:09,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:39:09,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:39:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867713221] [2022-07-12 03:39:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:39:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:39:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:39:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:39:09,700 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:09,765 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-07-12 03:39:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:39:09,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-12 03:39:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:09,766 INFO L225 Difference]: With dead ends: 26 [2022-07-12 03:39:09,766 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 03:39:09,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:39:09,768 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:09,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:39:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 03:39:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-12 03:39:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-07-12 03:39:09,774 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2022-07-12 03:39:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:09,774 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-07-12 03:39:09,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-07-12 03:39:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:39:09,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:09,776 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:09,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:39:09,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash 909226845, now seen corresponding path program 1 times [2022-07-12 03:39:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:09,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087510129] [2022-07-12 03:39:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087510129] [2022-07-12 03:39:09,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087510129] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:39:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201310458] [2022-07-12 03:39:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:09,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:09,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:39:09,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:39:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:10,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 03:39:10,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:39:10,087 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 03:39:10,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-12 03:39:10,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-12 03:39:10,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-12 03:39:10,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:10,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:10,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 03:39:10,209 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 03:39:10,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 03:39:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:10,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:39:10,369 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_3| Int) (v_ArrVal_181 (Array Int Int)) (v_ArrVal_179 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_3| v_ArrVal_181) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_179) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_3|) 0)) (< .cse0 100) (= .cse0 100)))) is different from false [2022-07-12 03:39:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-12 03:39:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201310458] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:39:10,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:39:10,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 13 [2022-07-12 03:39:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996369855] [2022-07-12 03:39:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:39:10,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 03:39:10,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 03:39:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2022-07-12 03:39:10,466 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:10,624 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-07-12 03:39:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 03:39:10,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 13 [2022-07-12 03:39:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:10,628 INFO L225 Difference]: With dead ends: 38 [2022-07-12 03:39:10,628 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 03:39:10,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=151, Unknown=1, NotChecked=26, Total=240 [2022-07-12 03:39:10,629 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:10,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-07-12 03:39:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 03:39:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 18. [2022-07-12 03:39:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2022-07-12 03:39:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-07-12 03:39:10,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2022-07-12 03:39:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:10,635 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-07-12 03:39:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-07-12 03:39:10,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 03:39:10,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:10,637 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:10,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 03:39:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:10,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1525342480, now seen corresponding path program 1 times [2022-07-12 03:39:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:10,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741853944] [2022-07-12 03:39:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741853944] [2022-07-12 03:39:10,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741853944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:39:10,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875627329] [2022-07-12 03:39:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:10,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:10,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:39:11,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 03:39:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:11,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-12 03:39:11,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:39:11,162 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-12 03:39:11,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:11,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:11,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 59 [2022-07-12 03:39:11,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2022-07-12 03:39:11,365 INFO L356 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-07-12 03:39:11,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 45 [2022-07-12 03:39:11,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-12 03:39:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:11,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:39:11,699 INFO L356 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-07-12 03:39:11,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 93 [2022-07-12 03:39:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:11,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875627329] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:39:11,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:39:11,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-07-12 03:39:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109361209] [2022-07-12 03:39:11,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:39:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 03:39:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 03:39:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-12 03:39:11,921 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:12,382 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-07-12 03:39:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 03:39:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-12 03:39:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:12,383 INFO L225 Difference]: With dead ends: 41 [2022-07-12 03:39:12,383 INFO L226 Difference]: Without dead ends: 29 [2022-07-12 03:39:12,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2022-07-12 03:39:12,384 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 39 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 123 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 107 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-07-12 03:39:12,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-12 03:39:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-07-12 03:39:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-07-12 03:39:12,389 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 14 [2022-07-12 03:39:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:12,389 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-07-12 03:39:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-07-12 03:39:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 03:39:12,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:12,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:12,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:39:12,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 03:39:12,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:12,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:12,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1328429964, now seen corresponding path program 1 times [2022-07-12 03:39:12,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:12,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097700834] [2022-07-12 03:39:12,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:12,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:12,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:12,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097700834] [2022-07-12 03:39:12,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097700834] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:39:12,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086865198] [2022-07-12 03:39:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:12,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:12,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:12,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:39:12,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 03:39:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:13,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 03:39:13,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:39:13,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:13,042 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 03:39:13,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 03:39:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:13,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-07-12 03:39:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-07-12 03:39:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-12 03:39:13,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:13,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-12 03:39:13,178 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:39:13,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 03:39:13,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 59 [2022-07-12 03:39:13,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2022-07-12 03:39:13,310 INFO L356 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-07-12 03:39:13,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 45 [2022-07-12 03:39:13,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-12 03:39:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:13,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:39:13,635 INFO L356 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-07-12 03:39:13,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 101 [2022-07-12 03:39:14,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:39:14,025 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-12 03:39:14,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 1 [2022-07-12 03:39:14,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:39:14,033 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-12 03:39:14,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 1 [2022-07-12 03:39:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:14,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086865198] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:39:14,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:39:14,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2022-07-12 03:39:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611479545] [2022-07-12 03:39:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:39:14,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 03:39:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 03:39:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-07-12 03:39:14,038 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:14,602 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2022-07-12 03:39:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 03:39:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-12 03:39:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:14,604 INFO L225 Difference]: With dead ends: 46 [2022-07-12 03:39:14,604 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 03:39:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2022-07-12 03:39:14,605 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:14,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 83 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 93 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-07-12 03:39:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 03:39:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2022-07-12 03:39:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-07-12 03:39:14,611 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2022-07-12 03:39:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:14,611 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-12 03:39:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-07-12 03:39:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 03:39:14,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:14,612 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:14,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:39:14,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:14,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1426514087, now seen corresponding path program 2 times [2022-07-12 03:39:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:14,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284743080] [2022-07-12 03:39:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:15,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284743080] [2022-07-12 03:39:15,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284743080] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:39:15,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984155182] [2022-07-12 03:39:15,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:39:15,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:15,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:15,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:39:15,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 03:39:15,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:39:15,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:39:15,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-12 03:39:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:39:15,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:15,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:15,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 03:39:15,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:15,539 INFO L390 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 18 treesize of output 19 [2022-07-12 03:39:15,689 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 03:39:15,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2022-07-12 03:39:15,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-07-12 03:39:15,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 56 [2022-07-12 03:39:15,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 29 [2022-07-12 03:39:15,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-12 03:39:15,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-12 03:39:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 03:39:15,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:39:16,071 INFO L356 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-07-12 03:39:16,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 140 [2022-07-12 03:39:16,253 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (= |c_ULTIMATE.start_main_~m~0#1.offset| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_492)) (.cse2 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_493) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2)) (+ (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2) 4)))))) (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (= |c_ULTIMATE.start_main_~m~0#1.base| (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (.cse4 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_493))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))) (+ (select (select (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_492) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4) 4)))))) is different from false [2022-07-12 03:39:16,284 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (= |c_ULTIMATE.start_main_~m~0#1.offset| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_492)) (.cse2 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse2)) (+ (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) .cse2) 4)))))) (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (= |c_ULTIMATE.start_main_~m~0#1.base| (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (.cse4 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_493))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) .cse4))) (+ (select (select (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_492) |c_ULTIMATE.start_main_~head~0#1.base|) .cse4) 4)))))) is different from false [2022-07-12 03:39:16,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:39:16,319 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:39:16,320 INFO L390 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 59 treesize of output 1 [2022-07-12 03:39:16,327 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:39:16,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 1 [2022-07-12 03:39:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-07-12 03:39:16,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984155182] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:39:16,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:39:16,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 23 [2022-07-12 03:39:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753598498] [2022-07-12 03:39:16,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:39:16,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 03:39:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:39:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 03:39:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=356, Unknown=2, NotChecked=78, Total=506 [2022-07-12 03:39:16,331 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:39:17,332 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-07-12 03:39:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 03:39:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-12 03:39:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:39:17,333 INFO L225 Difference]: With dead ends: 53 [2022-07-12 03:39:17,333 INFO L226 Difference]: Without dead ends: 49 [2022-07-12 03:39:17,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=218, Invalid=780, Unknown=2, NotChecked=122, Total=1122 [2022-07-12 03:39:17,335 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:39:17,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 143 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-07-12 03:39:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-12 03:39:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2022-07-12 03:39:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-07-12 03:39:17,341 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2022-07-12 03:39:17,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:39:17,341 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-07-12 03:39:17,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:39:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-07-12 03:39:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 03:39:17,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:39:17,342 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:39:17,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:39:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:17,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:39:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:39:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -867864053, now seen corresponding path program 2 times [2022-07-12 03:39:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:39:17,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366495289] [2022-07-12 03:39:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:39:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:39:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:39:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:39:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366495289] [2022-07-12 03:39:17,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366495289] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:39:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481713915] [2022-07-12 03:39:17,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:39:17,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:39:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:39:17,959 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) [2022-07-12 03:39:17,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 03:39:18,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:39:18,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:39:18,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-12 03:39:18,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:39:18,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-12 03:39:18,156 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 03:39:18,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-12 03:39:18,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-07-12 03:39:18,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-07-12 03:39:18,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-07-12 03:39:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-12 03:39:18,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:39:18,274 INFO L390 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 25 treesize of output 25 [2022-07-12 03:39:18,289 INFO L356 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-07-12 03:39:18,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2022-07-12 03:39:18,553 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 03:39:18,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 144 [2022-07-12 03:39:18,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 37 [2022-07-12 03:39:18,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2022-07-12 03:39:18,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:39:18,845 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:39:18,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 115 [2022-07-12 03:39:18,857 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-07-12 03:39:18,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 65 [2022-07-12 03:39:18,894 INFO L356 Elim1Store]: treesize reduction 24, result has 61.9 percent of original size [2022-07-12 03:39:18,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 59 [2022-07-12 03:39:19,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-12 03:39:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:39:19,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:39:20,190 INFO L356 Elim1Store]: treesize reduction 124, result has 80.6 percent of original size [2022-07-12 03:39:20,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3045 treesize of output 2991