./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/forester-heap/dll-token-1.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 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:38:15,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:38:15,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:38:15,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:38:15,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:38:15,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:38:15,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:38:15,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:38:15,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:38:15,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:38:15,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:38:15,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:38:15,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:38:15,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:38:15,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:38:15,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:38:15,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:38:15,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:38:15,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:38:15,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:38:15,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:38:15,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:38:15,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:38:15,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:38:15,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:38:15,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:38:15,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:38:15,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:38:15,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:38:15,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:38:15,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:38:15,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:38:15,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:38:15,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:38:15,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:38:15,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:38:15,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:38:15,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:38:15,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:38:15,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:38:15,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:38:15,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:38:15,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:38:15,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:38:15,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:38:15,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:38:15,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:38:15,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:38:15,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:38:15,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:38:15,800 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:38:15,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:38:15,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:38:15,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:38:15,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:38:15,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:38:15,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:38:15,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:38:15,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:38:15,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:38:15,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:38:15,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:38:15,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:38:15,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:38:15,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:38:15,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:38:15,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:38:15,805 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:38:15,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:38:15,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:38:15,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:38:15,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2021-12-14 13:38:16,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:38:16,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:38:16,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:38:16,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:38:16,046 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:38:16,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-1.i [2021-12-14 13:38:16,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4b4dd17/5463d49699a24606b9d7bd546c90913f/FLAGae3a35d0f [2021-12-14 13:38:16,577 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:38:16,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i [2021-12-14 13:38:16,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4b4dd17/5463d49699a24606b9d7bd546c90913f/FLAGae3a35d0f [2021-12-14 13:38:16,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4b4dd17/5463d49699a24606b9d7bd546c90913f [2021-12-14 13:38:16,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:38:16,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:38:16,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:38:16,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:38:16,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:38:16,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:38:16" (1/1) ... [2021-12-14 13:38:16,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adce6af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:16, skipping insertion in model container [2021-12-14 13:38:16,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:38:16" (1/1) ... [2021-12-14 13:38:16,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:38:16,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:38:16,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-12-14 13:38:16,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-12-14 13:38:16,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-12-14 13:38:16,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-12-14 13:38:16,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-12-14 13:38:16,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-12-14 13:38:16,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:38:16,945 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:38:16,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-12-14 13:38:16,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-12-14 13:38:16,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-12-14 13:38:16,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-12-14 13:38:16,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-12-14 13:38:16,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-12-14 13:38:16,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:38:17,005 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:38:17,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17 WrapperNode [2021-12-14 13:38:17,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:38:17,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:38:17,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:38:17,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:38:17,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,047 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2021-12-14 13:38:17,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:38:17,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:38:17,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:38:17,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:38:17,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:38:17,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:38:17,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:38:17,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:38:17,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (1/1) ... [2021-12-14 13:38:17,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:38:17,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:38:17,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:38:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 13:38:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 13:38:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:38:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:38:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:38:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:38:17,233 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:38:17,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:38:17,429 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:38:17,434 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:38:17,435 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-14 13:38:17,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:38:17 BoogieIcfgContainer [2021-12-14 13:38:17,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:38:17,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:38:17,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:38:17,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:38:17,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:38:16" (1/3) ... [2021-12-14 13:38:17,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b80b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:38:17, skipping insertion in model container [2021-12-14 13:38:17,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:38:17" (2/3) ... [2021-12-14 13:38:17,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b80b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:38:17, skipping insertion in model container [2021-12-14 13:38:17,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:38:17" (3/3) ... [2021-12-14 13:38:17,443 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2021-12-14 13:38:17,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:38:17,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-14 13:38:17,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:38:17,495 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:38:17,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-14 13:38:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 13:38:17,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:17,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 13:38:17,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 890337990, now seen corresponding path program 1 times [2021-12-14 13:38:17,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:17,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619209962] [2021-12-14 13:38:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:17,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:17,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619209962] [2021-12-14 13:38:17,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619209962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:17,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:17,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:38:17,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586528871] [2021-12-14 13:38:17,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:17,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:38:17,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:38:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:38:17,745 INFO L87 Difference]: Start difference. First operand has 44 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:17,763 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2021-12-14 13:38:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:38:17,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-14 13:38:17,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:17,772 INFO L225 Difference]: With dead ends: 86 [2021-12-14 13:38:17,772 INFO L226 Difference]: Without dead ends: 39 [2021-12-14 13:38:17,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:38:17,777 INFO L933 BasicCegarLoop]: 46 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, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:17,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:38:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-14 13:38:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-14 13:38:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-12-14 13:38:17,804 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 6 [2021-12-14 13:38:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:17,804 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-12-14 13:38:17,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-12-14 13:38:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 13:38:17,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:17,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 13:38:17,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:38:17,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 889571369, now seen corresponding path program 1 times [2021-12-14 13:38:17,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524969121] [2021-12-14 13:38:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:17,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:17,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524969121] [2021-12-14 13:38:17,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524969121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:17,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:17,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 13:38:17,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533357847] [2021-12-14 13:38:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:17,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:38:17,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:38:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:38:17,946 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:18,009 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-12-14 13:38:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:38:18,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-14 13:38:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:18,011 INFO L225 Difference]: With dead ends: 39 [2021-12-14 13:38:18,011 INFO L226 Difference]: Without dead ends: 37 [2021-12-14 13:38:18,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:38:18,012 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:18,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:38:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-14 13:38:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-14 13:38:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-12-14 13:38:18,017 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-12-14 13:38:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:18,018 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-12-14 13:38:18,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-12-14 13:38:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 13:38:18,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:18,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:18,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 13:38:18,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1806865149, now seen corresponding path program 1 times [2021-12-14 13:38:18,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:18,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69451496] [2021-12-14 13:38:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:18,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:18,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:18,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69451496] [2021-12-14 13:38:18,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69451496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:18,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:18,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 13:38:18,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466643020] [2021-12-14 13:38:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:18,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:38:18,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:38:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:38:18,171 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:18,216 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-12-14 13:38:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:38:18,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-14 13:38:18,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:18,218 INFO L225 Difference]: With dead ends: 63 [2021-12-14 13:38:18,218 INFO L226 Difference]: Without dead ends: 61 [2021-12-14 13:38:18,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:38:18,221 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 72 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:18,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:38:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-14 13:38:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2021-12-14 13:38:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-12-14 13:38:18,231 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-12-14 13:38:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:18,232 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-12-14 13:38:18,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-12-14 13:38:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:38:18,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:18,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:18,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 13:38:18,233 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:18,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -913382283, now seen corresponding path program 1 times [2021-12-14 13:38:18,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:18,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714745135] [2021-12-14 13:38:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:18,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:18,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714745135] [2021-12-14 13:38:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714745135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:18,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:18,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 13:38:18,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114570331] [2021-12-14 13:38:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:18,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 13:38:18,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 13:38:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:38:18,319 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:18,374 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-12-14 13:38:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:38:18,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-14 13:38:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:18,375 INFO L225 Difference]: With dead ends: 35 [2021-12-14 13:38:18,375 INFO L226 Difference]: Without dead ends: 33 [2021-12-14 13:38:18,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:38:18,377 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:18,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 90 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:38:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-14 13:38:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-14 13:38:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-12-14 13:38:18,382 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2021-12-14 13:38:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:18,382 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-12-14 13:38:18,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-12-14 13:38:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:38:18,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:18,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:18,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 13:38:18,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -913344547, now seen corresponding path program 1 times [2021-12-14 13:38:18,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:18,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235791057] [2021-12-14 13:38:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:18,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:18,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:18,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235791057] [2021-12-14 13:38:18,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235791057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:18,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:18,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:38:18,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772391853] [2021-12-14 13:38:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:18,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:38:18,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:38:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:38:18,621 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:18,836 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-12-14 13:38:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:38:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-14 13:38:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:18,838 INFO L225 Difference]: With dead ends: 50 [2021-12-14 13:38:18,838 INFO L226 Difference]: Without dead ends: 48 [2021-12-14 13:38:18,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-14 13:38:18,840 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:18,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 93 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:38:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-14 13:38:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-12-14 13:38:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 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) [2021-12-14 13:38:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-12-14 13:38:18,845 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2021-12-14 13:38:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:18,845 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-12-14 13:38:18,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-12-14 13:38:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 13:38:18,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:18,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:18,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 13:38:18,846 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash -313255267, now seen corresponding path program 1 times [2021-12-14 13:38:18,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:18,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54967366] [2021-12-14 13:38:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:18,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:18,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54967366] [2021-12-14 13:38:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54967366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:18,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:18,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 13:38:18,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469037124] [2021-12-14 13:38:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:18,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 13:38:18,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 13:38:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:38:19,000 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:19,113 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-12-14 13:38:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:38:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 13:38:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:19,114 INFO L225 Difference]: With dead ends: 66 [2021-12-14 13:38:19,114 INFO L226 Difference]: Without dead ends: 64 [2021-12-14 13:38:19,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 13:38:19,115 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:19,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 135 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:38:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-14 13:38:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2021-12-14 13:38:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-12-14 13:38:19,121 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2021-12-14 13:38:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:19,121 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-12-14 13:38:19,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-12-14 13:38:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 13:38:19,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:19,122 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:19,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 13:38:19,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -648614522, now seen corresponding path program 1 times [2021-12-14 13:38:19,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:19,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200653664] [2021-12-14 13:38:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:19,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:19,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:19,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200653664] [2021-12-14 13:38:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200653664] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:38:19,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029388198] [2021-12-14 13:38:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:19,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:19,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:38:19,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:38:19,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 13:38:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:19,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-14 13:38:19,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:38:19,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 13:38:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 13:38:19,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:19,687 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 29 [2021-12-14 13:38:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:19,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:19,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:19,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-14 13:38:19,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-14 13:38:19,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-12-14 13:38:19,714 INFO L388 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 18 treesize of output 16 [2021-12-14 13:38:19,730 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-14 13:38:19,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-14 13:38:19,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:19,913 INFO L354 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2021-12-14 13:38:19,913 INFO L388 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 3 case distinctions, treesize of input 37 treesize of output 38 [2021-12-14 13:38:19,937 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-14 13:38:19,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-14 13:38:19,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 13:38:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:19,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:38:20,042 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:20,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-14 13:38:20,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2021-12-14 13:38:20,054 INFO L388 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 24 treesize of output 22 [2021-12-14 13:38:20,750 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:20,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 101 [2021-12-14 13:38:20,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 178 [2021-12-14 13:38:20,764 INFO L388 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 178 treesize of output 170 [2021-12-14 13:38:26,306 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1068 Int) (v_arrayElimCell_14 Int) (v_ArrVal_1078 (Array Int Int)) (v_arrayElimCell_15 Int) (v_ArrVal_1076 (Array Int Int)) (v_ArrVal_1075 (Array Int Int)) (v_arrayElimCell_12 Int)) (let ((.cse1 (= v_arrayElimCell_15 v_arrayElimCell_12)) (.cse0 (= |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_14))) (or (not (= (select (store |c_#valid| v_arrayElimCell_14 1) v_arrayElimCell_12) 0)) (and .cse0 .cse1 (forall ((v_ArrVal_1080 (Array Int Int)) (v_arrayElimCell_13 Int)) (= (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_1068)) v_arrayElimCell_14 v_ArrVal_1075) v_arrayElimCell_15 v_ArrVal_1078) v_arrayElimCell_12 v_ArrVal_1080) v_arrayElimCell_13 v_ArrVal_1076) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0))) (let ((.cse4 (not .cse0))) (and (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_1068))) (.cse3 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (or (and .cse0 (= 0 (select (select (store (store (store .cse2 v_arrayElimCell_14 v_ArrVal_1075) v_arrayElimCell_15 v_ArrVal_1078) v_arrayElimCell_12 v_ArrVal_1076) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3))) (and (= (select (select (store (store .cse2 v_arrayElimCell_14 v_ArrVal_1078) v_arrayElimCell_12 v_ArrVal_1076) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) 0) .cse4))) (or (not .cse1) .cse4))) (not (= (select |c_#valid| v_arrayElimCell_14) 0))))) is different from false [2021-12-14 13:38:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-14 13:38:30,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029388198] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:38:30,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:38:30,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-14 13:38:30,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075094932] [2021-12-14 13:38:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:38:30,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 13:38:30,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 13:38:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-12-14 13:38:30,055 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:30,283 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-12-14 13:38:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:38:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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 16 [2021-12-14 13:38:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:30,284 INFO L225 Difference]: With dead ends: 60 [2021-12-14 13:38:30,285 INFO L226 Difference]: Without dead ends: 58 [2021-12-14 13:38:30,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=113, Unknown=2, NotChecked=22, Total=182 [2021-12-14 13:38:30,286 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:30,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 226 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2021-12-14 13:38:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-14 13:38:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2021-12-14 13:38:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-12-14 13:38:30,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2021-12-14 13:38:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:30,291 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-12-14 13:38:30,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-12-14 13:38:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 13:38:30,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:30,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:30,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:38:30,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:30,512 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1909855756, now seen corresponding path program 1 times [2021-12-14 13:38:30,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343460116] [2021-12-14 13:38:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:30,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:30,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:30,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343460116] [2021-12-14 13:38:30,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343460116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:30,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:30,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:38:30,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463939087] [2021-12-14 13:38:30,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:30,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:38:30,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:38:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:38:30,635 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:30,734 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-12-14 13:38:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:38:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-14 13:38:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:30,736 INFO L225 Difference]: With dead ends: 76 [2021-12-14 13:38:30,736 INFO L226 Difference]: Without dead ends: 50 [2021-12-14 13:38:30,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-14 13:38:30,737 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:30,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 135 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:38:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-14 13:38:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-14 13:38:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.148936170212766) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-12-14 13:38:30,740 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2021-12-14 13:38:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:30,741 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-12-14 13:38:30,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-12-14 13:38:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 13:38:30,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:30,741 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:30,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 13:38:30,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1000772550, now seen corresponding path program 1 times [2021-12-14 13:38:30,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588600082] [2021-12-14 13:38:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:30,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:30,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:30,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588600082] [2021-12-14 13:38:30,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588600082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:38:30,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509595557] [2021-12-14 13:38:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:30,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:30,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:38:30,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:38:30,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 13:38:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:31,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-14 13:38:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:38:31,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 13:38:31,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 13:38:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:31,158 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 29 [2021-12-14 13:38:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:31,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:31,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:31,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-14 13:38:31,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-14 13:38:31,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-12-14 13:38:31,176 INFO L388 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 18 treesize of output 16 [2021-12-14 13:38:31,188 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-14 13:38:31,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-14 13:38:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:31,273 INFO L354 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2021-12-14 13:38:31,273 INFO L388 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 3 case distinctions, treesize of input 37 treesize of output 38 [2021-12-14 13:38:31,282 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-14 13:38:31,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-14 13:38:31,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 13:38:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:31,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:38:31,350 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:31,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-14 13:38:31,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 54 [2021-12-14 13:38:31,363 INFO L388 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 47 treesize of output 45 [2021-12-14 13:38:31,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:31,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 104 [2021-12-14 13:38:31,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2021-12-14 13:38:31,535 INFO L388 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 183 treesize of output 175 [2021-12-14 13:38:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:32,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509595557] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:38:32,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:38:32,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-14 13:38:32,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132447161] [2021-12-14 13:38:32,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:38:32,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 13:38:32,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 13:38:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=82, Unknown=2, NotChecked=0, Total=110 [2021-12-14 13:38:32,358 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:32,573 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-12-14 13:38:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 13:38:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 13:38:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:32,574 INFO L225 Difference]: With dead ends: 97 [2021-12-14 13:38:32,574 INFO L226 Difference]: Without dead ends: 81 [2021-12-14 13:38:32,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=176, Unknown=3, NotChecked=0, Total=240 [2021-12-14 13:38:32,575 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:32,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 199 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2021-12-14 13:38:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-14 13:38:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2021-12-14 13:38:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-12-14 13:38:32,581 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 20 [2021-12-14 13:38:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:32,581 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-12-14 13:38:32,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-12-14 13:38:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 13:38:32,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:32,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:32,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:38:32,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-14 13:38:32,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1552465966, now seen corresponding path program 1 times [2021-12-14 13:38:32,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:32,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875481911] [2021-12-14 13:38:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:32,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:32,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:32,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875481911] [2021-12-14 13:38:32,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875481911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:38:32,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:38:32,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 13:38:32,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985638780] [2021-12-14 13:38:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:38:32,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 13:38:32,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 13:38:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:38:32,854 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:32,894 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-12-14 13:38:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:38:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 13:38:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:32,895 INFO L225 Difference]: With dead ends: 63 [2021-12-14 13:38:32,895 INFO L226 Difference]: Without dead ends: 44 [2021-12-14 13:38:32,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:38:32,896 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:32,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:38:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-14 13:38:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-14 13:38:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-12-14 13:38:32,900 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 22 [2021-12-14 13:38:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:32,900 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-12-14 13:38:32,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-12-14 13:38:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 13:38:32,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:32,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:32,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 13:38:32,902 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:32,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1970202869, now seen corresponding path program 1 times [2021-12-14 13:38:32,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:32,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929559227] [2021-12-14 13:38:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:32,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:33,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:33,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929559227] [2021-12-14 13:38:33,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929559227] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:38:33,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870325835] [2021-12-14 13:38:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:33,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:33,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:38:33,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:38:33,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 13:38:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:33,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-14 13:38:33,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:38:33,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 13:38:33,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-14 13:38:33,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-14 13:38:33,375 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-12-14 13:38:33,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 78 [2021-12-14 13:38:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:33,383 INFO L388 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 28 treesize of output 25 [2021-12-14 13:38:33,395 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-12-14 13:38:33,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2021-12-14 13:38:33,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-14 13:38:33,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,575 INFO L354 Elim1Store]: treesize reduction 106, result has 32.1 percent of original size [2021-12-14 13:38:33,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 201 treesize of output 208 [2021-12-14 13:38:33,585 INFO L388 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 0 case distinctions, treesize of input 73 treesize of output 58 [2021-12-14 13:38:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,622 INFO L354 Elim1Store]: treesize reduction 44, result has 50.6 percent of original size [2021-12-14 13:38:33,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 103 [2021-12-14 13:38:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:33,649 INFO L354 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2021-12-14 13:38:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 81 [2021-12-14 13:38:33,676 INFO L388 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 56 treesize of output 48 [2021-12-14 13:38:33,686 INFO L388 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 56 treesize of output 48 [2021-12-14 13:38:33,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-12-14 13:38:33,724 INFO L354 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2021-12-14 13:38:33,724 INFO L388 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 28 treesize of output 38 [2021-12-14 13:38:33,737 INFO L388 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 70 treesize of output 64 [2021-12-14 13:38:33,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-12-14 13:38:34,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-12-14 13:38:34,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:34,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-12-14 13:38:34,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:34,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 56 [2021-12-14 13:38:34,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:34,389 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 13:38:34,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 33 [2021-12-14 13:38:34,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-14 13:38:34,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 13:38:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:34,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:38:34,479 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-14 13:38:34,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 105 [2021-12-14 13:38:34,487 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:34,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 81 [2021-12-14 13:38:34,504 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:34,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 431 treesize of output 434 [2021-12-14 13:38:34,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:34,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 430 treesize of output 424 [2021-12-14 13:38:34,519 INFO L388 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 349 treesize of output 287 [2021-12-14 13:38:34,526 INFO L388 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 158 treesize of output 127 [2021-12-14 13:38:34,621 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,626 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,646 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,651 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,717 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,725 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,744 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_19 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int))) (or (not (= (select |c_#valid| (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) (not (= (select v_arrayElimArr_20 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (forall ((v_ArrVal_2091 (Array Int Int)) (v_ArrVal_2090 (Array Int Int)) (v_ArrVal_2104 (Array Int Int))) (= (select (select (let ((.cse0 (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_20) .cse0 v_ArrVal_2104) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_19) .cse0 v_ArrVal_2090) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2091)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_2107 (Array Int Int)) (v_ArrVal_2111 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (not (let ((.cse1 (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_19))) (store (store .cse2 .cse1 v_ArrVal_2111) (select (select (store .cse2 .cse1 v_ArrVal_2107) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2098)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_2107 (Array Int Int)) (v_ArrVal_2111 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.base| (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_19)) (.cse4 (select v_arrayElimArr_19 |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store .cse3 .cse4 v_ArrVal_2111) (select (select (store .cse3 .cse4 v_ArrVal_2107) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2098)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-12-14 13:38:34,771 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,777 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,837 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,848 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,873 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,878 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,936 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,945 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,970 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:34,974 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,034 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,042 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,067 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,072 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,133 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,141 INFO L388 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 6 treesize of output 4 [2021-12-14 13:38:35,177 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 523 treesize of output 419 [2021-12-14 13:38:35,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 419 treesize of output 307 [2021-12-14 13:38:35,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7904 treesize of output 7359 [2021-12-14 13:38:35,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23976 treesize of output 20607 [2021-12-14 13:38:35,412 INFO L388 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 20607 treesize of output 18591 [2021-12-14 13:38:35,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18591 treesize of output 16459 [2021-12-14 13:38:35,689 INFO L388 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 16459 treesize of output 16391 [2021-12-14 13:38:35,809 INFO L388 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 16391 treesize of output 15703 [2021-12-14 13:38:35,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:35,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 15703 treesize of output 15587 [2021-12-14 13:38:36,083 INFO L388 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 15587 treesize of output 15571 [2021-12-14 13:38:36,344 INFO L388 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 15446 treesize of output 15286 [2021-12-14 13:38:36,458 INFO L388 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 15286 treesize of output 14854 [2021-12-14 13:38:36,573 INFO L388 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 14854 treesize of output 14822 [2021-12-14 13:38:36,675 INFO L388 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 14822 treesize of output 14758 [2021-12-14 13:38:36,782 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:36,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14758 treesize of output 14695 [2021-12-14 13:38:36,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:36,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14686 treesize of output 14503 [2021-12-14 13:38:37,025 INFO L388 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 14494 treesize of output 14462 [2021-12-14 13:38:37,106 INFO L388 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 14462 treesize of output 14398 [2021-12-14 13:38:37,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:37,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14398 treesize of output 14027 [2021-12-14 13:38:37,279 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-14 13:38:37,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 13:38:37,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-14 13:38:37,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496002693] [2021-12-14 13:38:37,280 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 13:38:37,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 13:38:37,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:38:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 13:38:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2021-12-14 13:38:37,281 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:38:37,420 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-12-14 13:38:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:38:37,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 13:38:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:38:37,421 INFO L225 Difference]: With dead ends: 75 [2021-12-14 13:38:37,421 INFO L226 Difference]: Without dead ends: 59 [2021-12-14 13:38:37,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=140, Unknown=1, NotChecked=24, Total=210 [2021-12-14 13:38:37,422 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:38:37,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 91 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:38:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-14 13:38:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-12-14 13:38:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-12-14 13:38:37,427 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 22 [2021-12-14 13:38:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:38:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-12-14 13:38:37,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:38:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-12-14 13:38:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:38:37,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:38:37,428 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:38:37,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:38:37,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:37,644 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 13:38:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:38:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -882557003, now seen corresponding path program 1 times [2021-12-14 13:38:37,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:38:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689282071] [2021-12-14 13:38:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:37,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:38:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:37,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:38:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689282071] [2021-12-14 13:38:37,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689282071] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:38:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016584315] [2021-12-14 13:38:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:38:37,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:38:37,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:38:37,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:38:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 13:38:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:38:38,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-14 13:38:38,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:38:38,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 13:38:38,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-14 13:38:38,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-14 13:38:38,190 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-12-14 13:38:38,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 78 [2021-12-14 13:38:38,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:38,199 INFO L388 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 28 treesize of output 25 [2021-12-14 13:38:38,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-14 13:38:38,215 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-12-14 13:38:38,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2021-12-14 13:38:38,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,433 INFO L354 Elim1Store]: treesize reduction 134, result has 34.3 percent of original size [2021-12-14 13:38:38,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 410 treesize of output 413 [2021-12-14 13:38:38,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:38,468 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-12-14 13:38:38,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 300 treesize of output 307 [2021-12-14 13:38:38,475 INFO L388 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 134 treesize of output 122 [2021-12-14 13:38:38,480 INFO L388 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 122 treesize of output 110 [2021-12-14 13:38:38,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 98 [2021-12-14 13:38:38,563 INFO L354 Elim1Store]: treesize reduction 104, result has 43.8 percent of original size [2021-12-14 13:38:38,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 98 treesize of output 179 [2021-12-14 13:38:38,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-12-14 13:38:38,585 INFO L388 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 111 treesize of output 87 [2021-12-14 13:38:38,594 INFO L388 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 112 treesize of output 88 [2021-12-14 13:38:38,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-12-14 13:38:38,623 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-12-14 13:38:38,623 INFO L388 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 32 treesize of output 46 [2021-12-14 13:38:38,675 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-12-14 13:38:38,676 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 69 [2021-12-14 13:38:38,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:38,734 INFO L388 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 1 case distinctions, treesize of input 42 treesize of output 46 [2021-12-14 13:38:38,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-12-14 13:38:39,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:39,194 INFO L388 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 169 treesize of output 181 [2021-12-14 13:38:39,210 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:39,211 INFO L388 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 190 treesize of output 204 [2021-12-14 13:38:39,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-14 13:38:39,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2021-12-14 13:38:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:40,556 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2021-12-14 13:38:40,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-14 13:38:40,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-12-14 13:38:40,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:38:40,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:40,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 64 [2021-12-14 13:38:41,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 13:38:41,191 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 13:38:41,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 48 [2021-12-14 13:38:41,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-12-14 13:38:41,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 13:38:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:38:41,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:38:41,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:41,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 224 [2021-12-14 13:38:41,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:41,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 194 [2021-12-14 13:38:41,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:41,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 486 treesize of output 490 [2021-12-14 13:38:41,346 INFO L388 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 88 treesize of output 3 [2021-12-14 13:38:41,374 INFO L388 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 574 treesize of output 404 [2021-12-14 13:38:41,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_33 (Array Int Int)) (v_arrayElimArr_34 (Array Int Int))) (or (not (= (select v_arrayElimArr_33 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (not (= (select |c_#valid| (select v_arrayElimArr_34 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) (and (forall ((v_ArrVal_2506 (Array Int Int)) (v_ArrVal_2517 (Array Int Int)) (v_ArrVal_2503 (Array Int Int)) (v_ArrVal_2501 (Array Int Int)) (v_ArrVal_2522 (Array Int Int)) (v_ArrVal_2521 (Array Int Int)) (v_ArrVal_2497 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_34)) (.cse2 (select v_arrayElimArr_34 |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (let ((.cse0 (store (store .cse1 .cse2 v_ArrVal_2503) (select (select (store .cse1 .cse2 v_ArrVal_2497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2521))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_33) .cse2 v_ArrVal_2522) (select (select (store .cse1 .cse2 v_ArrVal_2506) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2517) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select (store .cse1 .cse2 v_ArrVal_2501) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)))) (forall ((v_ArrVal_2506 (Array Int Int)) (v_ArrVal_2517 (Array Int Int)) (v_ArrVal_2503 (Array Int Int)) (v_ArrVal_2522 (Array Int Int)) (v_ArrVal_2521 (Array Int Int)) (v_ArrVal_2497 (Array Int Int)) (v_ArrVal_2518 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_33)) (.cse5 (select v_arrayElimArr_34 |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_34))) (let ((.cse3 (store (store .cse6 .cse5 v_ArrVal_2522) (select (select (store .cse4 .cse5 v_ArrVal_2506) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2517))) (select (select .cse3 (select (select (store (store .cse4 .cse5 v_ArrVal_2503) (select (select (store .cse4 .cse5 v_ArrVal_2497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2521) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (select (select (store .cse6 .cse5 v_ArrVal_2518) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))))))) is different from false [2021-12-14 13:38:42,141 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:42,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1055 treesize of output 839 [2021-12-14 13:38:42,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:38:42,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 839 treesize of output 591 [2021-12-14 13:38:46,343 INFO L354 Elim1Store]: treesize reduction 5982, result has 25.3 percent of original size [2021-12-14 13:38:46,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 25 new quantified variables, introduced 231 case distinctions, treesize of input 65084589 treesize of output 53624022