./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-buckets-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-buckets-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 c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:08:15,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:08:15,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:08:15,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:08:15,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:08:15,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:08:15,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:08:15,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:08:15,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:08:15,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:08:15,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:08:15,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:08:15,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:08:15,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:08:15,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:08:15,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:08:15,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:08:15,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:08:15,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:08:15,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:08:15,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:08:15,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:08:15,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:08:15,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:08:15,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:08:15,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:08:15,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:08:15,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:08:15,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:08:15,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:08:15,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:08:15,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:08:15,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:08:15,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:08:15,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:08:15,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:08:15,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:08:15,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:08:15,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:08:15,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:08:15,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:08:15,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:08:15,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:08:15,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:08:15,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:08:15,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:08:15,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:08:15,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:08:15,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:08:15,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:08:15,748 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:08:15,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:08:15,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:08:15,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:08:15,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:08:15,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:08:15,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:08:15,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:08:15,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:08:15,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:08:15,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:08:15,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:08:15,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:08:15,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:08:15,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:08:15,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2021-12-21 12:08:15,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:08:15,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:08:15,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:08:15,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:08:15,961 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:08:15,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2021-12-21 12:08:16,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05b44692/a3fcf23aa22e4d7e995f0ca76d46a1ee/FLAG0f286be88 [2021-12-21 12:08:16,406 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:08:16,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2021-12-21 12:08:16,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05b44692/a3fcf23aa22e4d7e995f0ca76d46a1ee/FLAG0f286be88 [2021-12-21 12:08:16,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05b44692/a3fcf23aa22e4d7e995f0ca76d46a1ee [2021-12-21 12:08:16,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:08:16,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:08:16,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:08:16,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:08:16,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:08:16,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f850449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16, skipping insertion in model container [2021-12-21 12:08:16,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:08:16,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:08:16,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2021-12-21 12:08:16,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2021-12-21 12:08:16,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2021-12-21 12:08:16,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2021-12-21 12:08:16,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2021-12-21 12:08:16,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:08:16,689 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:08:16,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2021-12-21 12:08:16,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2021-12-21 12:08:16,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2021-12-21 12:08:16,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2021-12-21 12:08:16,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2021-12-21 12:08:16,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:08:16,749 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:08:16,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16 WrapperNode [2021-12-21 12:08:16,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:08:16,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:08:16,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:08:16,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:08:16,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,792 INFO L137 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2021-12-21 12:08:16,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:08:16,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:08:16,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:08:16,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:08:16,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:08:16,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:08:16,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:08:16,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:08:16,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (1/1) ... [2021-12-21 12:08:16,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:08:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:16,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 12:08:16,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 12:08:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 12:08:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 12:08:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 12:08:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:08:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 12:08:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 12:08:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:08:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:08:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:08:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:08:16,992 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:08:16,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:08:17,244 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:08:17,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:08:17,248 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-21 12:08:17,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:08:17 BoogieIcfgContainer [2021-12-21 12:08:17,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:08:17,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:08:17,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:08:17,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:08:17,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:08:16" (1/3) ... [2021-12-21 12:08:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586c2b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:08:17, skipping insertion in model container [2021-12-21 12:08:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:16" (2/3) ... [2021-12-21 12:08:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586c2b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:08:17, skipping insertion in model container [2021-12-21 12:08:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:08:17" (3/3) ... [2021-12-21 12:08:17,255 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2021-12-21 12:08:17,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:08:17,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-21 12:08:17,287 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:08:17,291 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 [2021-12-21 12:08:17,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-21 12:08:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 12:08:17,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:17,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:17,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash 179510098, now seen corresponding path program 1 times [2021-12-21 12:08:17,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:17,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620984904] [2021-12-21 12:08:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:17,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:17,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620984904] [2021-12-21 12:08:17,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620984904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:17,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:17,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 12:08:17,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232449079] [2021-12-21 12:08:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:17,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:08:17,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:08:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:08:17,612 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:17,681 INFO L93 Difference]: Finished difference Result 112 states and 188 transitions. [2021-12-21 12:08:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 12:08:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 12:08:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:17,689 INFO L225 Difference]: With dead ends: 112 [2021-12-21 12:08:17,689 INFO L226 Difference]: Without dead ends: 66 [2021-12-21 12:08:17,694 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 [2021-12-21 12:08:17,699 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 91 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:17,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 84 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-21 12:08:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2021-12-21 12:08:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-12-21 12:08:17,727 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 8 [2021-12-21 12:08:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:17,728 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-12-21 12:08:17,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-12-21 12:08:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 12:08:17,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:17,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:17,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:08:17,729 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111283, now seen corresponding path program 1 times [2021-12-21 12:08:17,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:17,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815430200] [2021-12-21 12:08:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:17,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:17,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815430200] [2021-12-21 12:08:17,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815430200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:17,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:17,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 12:08:17,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982499267] [2021-12-21 12:08:17,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:08:17,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:08:17,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:08:17,807 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:17,831 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-12-21 12:08:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:08:17,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 12:08:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:17,833 INFO L225 Difference]: With dead ends: 45 [2021-12-21 12:08:17,833 INFO L226 Difference]: Without dead ends: 43 [2021-12-21 12:08:17,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:08:17,834 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:17,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-21 12:08:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-12-21 12:08:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-12-21 12:08:17,839 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 9 [2021-12-21 12:08:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:17,839 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-12-21 12:08:17,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-12-21 12:08:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 12:08:17,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:17,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:17,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:08:17,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1834780084, now seen corresponding path program 1 times [2021-12-21 12:08:17,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:17,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897573445] [2021-12-21 12:08:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:17,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:17,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:17,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897573445] [2021-12-21 12:08:17,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897573445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:17,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:17,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:08:17,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187475027] [2021-12-21 12:08:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:17,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:08:17,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:08:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:08:17,946 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:18,060 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2021-12-21 12:08:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:08:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-21 12:08:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:18,062 INFO L225 Difference]: With dead ends: 61 [2021-12-21 12:08:18,063 INFO L226 Difference]: Without dead ends: 50 [2021-12-21 12:08:18,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:08:18,065 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:18,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 94 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:08:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-21 12:08:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-12-21 12:08:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-12-21 12:08:18,075 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2021-12-21 12:08:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:18,075 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-12-21 12:08:18,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-12-21 12:08:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 12:08:18,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:18,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:18,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:08:18,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 710639734, now seen corresponding path program 1 times [2021-12-21 12:08:18,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:18,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102521781] [2021-12-21 12:08:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:18,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:18,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102521781] [2021-12-21 12:08:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102521781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:18,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:18,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 12:08:18,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092368303] [2021-12-21 12:08:18,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:18,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:08:18,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:08:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:08:18,161 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:18,198 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-12-21 12:08:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:08:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-21 12:08:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:18,199 INFO L225 Difference]: With dead ends: 45 [2021-12-21 12:08:18,199 INFO L226 Difference]: Without dead ends: 43 [2021-12-21 12:08:18,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 12:08:18,200 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:18,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-21 12:08:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-12-21 12:08:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.275) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2021-12-21 12:08:18,205 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2021-12-21 12:08:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:18,205 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2021-12-21 12:08:18,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2021-12-21 12:08:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 12:08:18,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:18,208 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:18,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:08:18,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash 625501225, now seen corresponding path program 1 times [2021-12-21 12:08:18,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:18,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856513039] [2021-12-21 12:08:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:18,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:18,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856513039] [2021-12-21 12:08:18,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856513039] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:18,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778972584] [2021-12-21 12:08:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:18,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:18,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:18,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:08:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:18,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-21 12:08:18,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:18,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:08:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2021-12-21 12:08:18,658 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-12-21 12:08:18,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2021-12-21 12:08:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-21 12:08:18,677 INFO L387 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 15 treesize of output 23 [2021-12-21 12:08:18,685 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-21 12:08:18,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-12-21 12:08:18,697 INFO L387 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 15 treesize of output 23 [2021-12-21 12:08:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2021-12-21 12:08:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:18,826 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-21 12:08:18,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 51 [2021-12-21 12:08:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:18,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:18,936 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:18,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 44 [2021-12-21 12:08:18,952 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-21 12:08:18,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2021-12-21 12:08:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:18,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778972584] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:19,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:19,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2021-12-21 12:08:19,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549183564] [2021-12-21 12:08:19,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 12:08:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:19,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 12:08:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:08:19,139 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2021-12-21 12:08:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:19,439 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-12-21 12:08:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:08:19,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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 15 [2021-12-21 12:08:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:19,440 INFO L225 Difference]: With dead ends: 64 [2021-12-21 12:08:19,440 INFO L226 Difference]: Without dead ends: 53 [2021-12-21 12:08:19,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-12-21 12:08:19,441 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:19,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 219 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 187 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2021-12-21 12:08:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-21 12:08:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-12-21 12:08:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-12-21 12:08:19,445 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2021-12-21 12:08:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:19,446 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-12-21 12:08:19,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2021-12-21 12:08:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-12-21 12:08:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 12:08:19,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:19,446 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:19,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:19,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:19,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1157082046, now seen corresponding path program 1 times [2021-12-21 12:08:19,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:19,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419667588] [2021-12-21 12:08:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:19,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:19,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:19,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419667588] [2021-12-21 12:08:19,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419667588] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:19,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468743089] [2021-12-21 12:08:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:19,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:19,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:19,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:19,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:08:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:19,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-21 12:08:19,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:19,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:08:19,921 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-12-21 12:08:19,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 77 [2021-12-21 12:08:19,942 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-12-21 12:08:19,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2021-12-21 12:08:19,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2021-12-21 12:08:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:20,021 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:20,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 67 [2021-12-21 12:08:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:20,034 INFO L353 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-12-21 12:08:20,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2021-12-21 12:08:20,082 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:20,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 65 [2021-12-21 12:08:20,203 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-21 12:08:20,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 29 [2021-12-21 12:08:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:20,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:20,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_676 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_676) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0))) is different from false [2021-12-21 12:08:20,245 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_23| Int) (v_ArrVal_676 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_23| v_ArrVal_676) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_23|) 0)))) is different from false [2021-12-21 12:08:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:20,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468743089] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:20,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:20,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2021-12-21 12:08:20,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023825367] [2021-12-21 12:08:20,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:20,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 12:08:20,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 12:08:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=83, Unknown=2, NotChecked=38, Total=156 [2021-12-21 12:08:20,270 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:20,711 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2021-12-21 12:08:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 12:08:20,713 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2021-12-21 12:08:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:20,715 INFO L225 Difference]: With dead ends: 155 [2021-12-21 12:08:20,715 INFO L226 Difference]: Without dead ends: 153 [2021-12-21 12:08:20,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=262, Unknown=2, NotChecked=74, Total=462 [2021-12-21 12:08:20,717 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 283 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:20,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 326 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 264 Invalid, 0 Unknown, 167 Unchecked, 0.2s Time] [2021-12-21 12:08:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-21 12:08:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2021-12-21 12:08:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-12-21 12:08:20,738 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2021-12-21 12:08:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:20,742 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-12-21 12:08:20,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-12-21 12:08:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 12:08:20,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:20,743 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:20,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:20,959 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,SelfDestructingSolverStorable5 [2021-12-21 12:08:20,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash 442135079, now seen corresponding path program 2 times [2021-12-21 12:08:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189499444] [2021-12-21 12:08:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:20,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:21,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189499444] [2021-12-21 12:08:21,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189499444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218700370] [2021-12-21 12:08:21,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:08:21,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:21,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:21,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:08:21,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:08:21,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:08:21,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 12:08:21,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:21,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2021-12-21 12:08:21,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:21,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-21 12:08:21,441 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-12-21 12:08:21,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2021-12-21 12:08:21,540 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:08:21,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 12:08:21,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 12:08:21,566 INFO L353 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-21 12:08:21,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2021-12-21 12:08:21,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 12:08:21,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-12-21 12:08:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:08:21,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:08:21,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218700370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:21,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:08:21,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 12:08:21,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182955903] [2021-12-21 12:08:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:08:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:08:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:08:21,696 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:21,885 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2021-12-21 12:08:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:08:21,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-21 12:08:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:21,886 INFO L225 Difference]: With dead ends: 138 [2021-12-21 12:08:21,886 INFO L226 Difference]: Without dead ends: 103 [2021-12-21 12:08:21,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:08:21,887 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:21,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 142 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2021-12-21 12:08:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-21 12:08:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2021-12-21 12:08:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.25) internal successors, (95), 77 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2021-12-21 12:08:21,891 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 18 [2021-12-21 12:08:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2021-12-21 12:08:21,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2021-12-21 12:08:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 12:08:21,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:21,892 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:21,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:22,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:22,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -482453053, now seen corresponding path program 1 times [2021-12-21 12:08:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135520441] [2021-12-21 12:08:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:22,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:22,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135520441] [2021-12-21 12:08:22,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135520441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247642866] [2021-12-21 12:08:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:22,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:22,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:22,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:22,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:08:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-21 12:08:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2021-12-21 12:08:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:08:22,470 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-12-21 12:08:22,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 112 [2021-12-21 12:08:22,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2021-12-21 12:08:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2021-12-21 12:08:22,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-12-21 12:08:22,532 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-12-21 12:08:22,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2021-12-21 12:08:22,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2021-12-21 12:08:22,548 INFO L387 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 15 treesize of output 23 [2021-12-21 12:08:22,638 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:08:22,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 12:08:22,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 12:08:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,661 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:22,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 73 [2021-12-21 12:08:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,675 INFO L353 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-21 12:08:22,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-21 12:08:22,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-21 12:08:22,784 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:22,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 72 [2021-12-21 12:08:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:22,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-21 12:08:22,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 12:08:23,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-12-21 12:08:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:23,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-12-21 12:08:23,123 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 12:08:23,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 26 [2021-12-21 12:08:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:23,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:23,215 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~item~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 1)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 8)) 1)) (forall ((v_ArrVal_1063 (Array Int Int)) (v_ArrVal_1062 (Array Int Int))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1063))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1062) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) 0)))) is different from false [2021-12-21 12:08:23,230 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:23,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 12:08:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:23,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247642866] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:23,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:23,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2021-12-21 12:08:23,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451122713] [2021-12-21 12:08:23,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:23,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 12:08:23,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:23,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 12:08:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=280, Unknown=3, NotChecked=34, Total=380 [2021-12-21 12:08:23,353 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:24,160 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2021-12-21 12:08:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 12:08:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 12:08:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:24,161 INFO L225 Difference]: With dead ends: 159 [2021-12-21 12:08:24,161 INFO L226 Difference]: Without dead ends: 109 [2021-12-21 12:08:24,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=526, Unknown=3, NotChecked=50, Total=756 [2021-12-21 12:08:24,163 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 138 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:24,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 251 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 282 Invalid, 0 Unknown, 109 Unchecked, 0.4s Time] [2021-12-21 12:08:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-21 12:08:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 85. [2021-12-21 12:08:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 84 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2021-12-21 12:08:24,181 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 19 [2021-12-21 12:08:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:24,181 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2021-12-21 12:08:24,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2021-12-21 12:08:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 12:08:24,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:24,182 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:24,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:24,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:24,383 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1136543444, now seen corresponding path program 2 times [2021-12-21 12:08:24,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:24,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295413718] [2021-12-21 12:08:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:24,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:24,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:24,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295413718] [2021-12-21 12:08:24,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295413718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:24,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050111729] [2021-12-21 12:08:24,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:08:24,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:24,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:24,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 12:08:24,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:08:24,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:08:24,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-21 12:08:24,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:24,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:24,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2021-12-21 12:08:24,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:24,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2021-12-21 12:08:24,905 INFO L353 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-12-21 12:08:24,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 74 [2021-12-21 12:08:24,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:24,924 INFO L353 Elim1Store]: treesize reduction 36, result has 44.6 percent of original size [2021-12-21 12:08:24,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 45 [2021-12-21 12:08:24,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2021-12-21 12:08:24,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-21 12:08:24,939 INFO L387 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 13 treesize of output 19 [2021-12-21 12:08:24,944 INFO L387 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 13 treesize of output 19 [2021-12-21 12:08:24,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-21 12:08:24,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 12:08:24,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-12-21 12:08:25,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-12-21 12:08:25,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:25,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:25,441 INFO L353 Elim1Store]: treesize reduction 168, result has 38.7 percent of original size [2021-12-21 12:08:25,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 190 treesize of output 275 [2021-12-21 12:08:25,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:25,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:25,501 INFO L353 Elim1Store]: treesize reduction 124, result has 28.7 percent of original size [2021-12-21 12:08:25,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 31 case distinctions, treesize of input 288 treesize of output 245 [2021-12-21 12:08:28,116 INFO L353 Elim1Store]: treesize reduction 323, result has 14.8 percent of original size [2021-12-21 12:08:28,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 175 treesize of output 174 [2021-12-21 12:08:28,171 INFO L353 Elim1Store]: treesize reduction 291, result has 12.9 percent of original size [2021-12-21 12:08:28,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 194 treesize of output 161 [2021-12-21 12:08:28,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:28,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:28,463 INFO L353 Elim1Store]: treesize reduction 115, result has 14.2 percent of original size [2021-12-21 12:08:28,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 209 treesize of output 117 [2021-12-21 12:08:28,478 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-21 12:08:28,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 50 [2021-12-21 12:08:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:28,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:32,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050111729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:32,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:32,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2021-12-21 12:08:32,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084246658] [2021-12-21 12:08:32,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:32,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 12:08:32,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 12:08:32,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=355, Unknown=1, NotChecked=0, Total=420 [2021-12-21 12:08:32,689 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:33,155 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2021-12-21 12:08:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:08:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2021-12-21 12:08:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:33,156 INFO L225 Difference]: With dead ends: 106 [2021-12-21 12:08:33,156 INFO L226 Difference]: Without dead ends: 78 [2021-12-21 12:08:33,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=635, Unknown=1, NotChecked=0, Total=756 [2021-12-21 12:08:33,157 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:33,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 324 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 64 Unchecked, 0.0s Time] [2021-12-21 12:08:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-21 12:08:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-12-21 12:08:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.24) internal successors, (93), 76 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-12-21 12:08:33,160 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 20 [2021-12-21 12:08:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:33,160 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-12-21 12:08:33,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-12-21 12:08:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 12:08:33,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:33,161 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:33,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-21 12:08:33,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:33,371 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 220535656, now seen corresponding path program 2 times [2021-12-21 12:08:33,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294640701] [2021-12-21 12:08:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:33,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:08:33,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:33,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294640701] [2021-12-21 12:08:33,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294640701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874380797] [2021-12-21 12:08:33,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:08:33,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:33,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:33,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:33,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 12:08:33,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:08:33,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:08:33,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-21 12:08:33,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2021-12-21 12:08:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2021-12-21 12:08:33,961 INFO L353 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-21 12:08:33,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 93 [2021-12-21 12:08:33,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 40 [2021-12-21 12:08:33,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,972 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2021-12-21 12:08:33,993 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-12-21 12:08:33,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2021-12-21 12:08:34,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-21 12:08:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:34,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-21 12:08:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:34,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-21 12:08:34,091 INFO L353 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-21 12:08:34,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2021-12-21 12:08:34,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 12:08:34,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-21 12:08:34,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-21 12:08:34,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 12:08:34,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:08:34,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-12-21 12:08:34,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-12-21 12:08:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:08:34,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:34,399 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1459 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int) (v_ArrVal_1460 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1460) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1459) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 8)) 1)) is different from false [2021-12-21 12:08:34,409 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:34,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-12-21 12:08:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:08:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874380797] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:34,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:34,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 12:08:34,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355914926] [2021-12-21 12:08:34,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:34,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 12:08:34,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 12:08:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2021-12-21 12:08:34,502 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) [2021-12-21 12:08:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:35,010 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2021-12-21 12:08:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:08:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-21 12:08:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:35,011 INFO L225 Difference]: With dead ends: 141 [2021-12-21 12:08:35,011 INFO L226 Difference]: Without dead ends: 106 [2021-12-21 12:08:35,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=414, Unknown=1, NotChecked=42, Total=552 [2021-12-21 12:08:35,012 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:35,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 312 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 370 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2021-12-21 12:08:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-21 12:08:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2021-12-21 12:08:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 78 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-12-21 12:08:35,015 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 21 [2021-12-21 12:08:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:35,016 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-12-21 12:08:35,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) [2021-12-21 12:08:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-12-21 12:08:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 12:08:35,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:35,016 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:35,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:35,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:35,217 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:35,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:35,217 INFO L85 PathProgramCache]: Analyzing trace with hash -800532698, now seen corresponding path program 1 times [2021-12-21 12:08:35,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:35,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972913149] [2021-12-21 12:08:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:35,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:35,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972913149] [2021-12-21 12:08:35,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972913149] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756582087] [2021-12-21 12:08:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:35,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:35,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:35,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:35,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 12:08:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:35,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-21 12:08:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:08:35,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2021-12-21 12:08:35,553 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-12-21 12:08:35,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 81 [2021-12-21 12:08:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-12-21 12:08:35,580 INFO L353 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-12-21 12:08:35,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2021-12-21 12:08:35,586 INFO L387 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 15 treesize of output 23 [2021-12-21 12:08:35,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2021-12-21 12:08:35,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 46 [2021-12-21 12:08:35,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,693 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:35,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 81 [2021-12-21 12:08:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-21 12:08:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-21 12:08:35,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,719 INFO L353 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-12-21 12:08:35,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2021-12-21 12:08:35,830 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 12:08:35,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 79 [2021-12-21 12:08:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:35,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-21 12:08:35,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-21 12:08:36,198 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-21 12:08:36,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 65 [2021-12-21 12:08:36,206 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-21 12:08:36,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 22 [2021-12-21 12:08:36,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-12-21 12:08:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:36,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:36,326 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1666 (Array Int Int)) (v_ArrVal_1665 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int)) (= 2 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1666)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1665))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 2)) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 8)))))) is different from false [2021-12-21 12:08:36,336 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:36,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 63 [2021-12-21 12:08:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756582087] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:36,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2021-12-21 12:08:36,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455504660] [2021-12-21 12:08:36,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:36,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 12:08:36,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 12:08:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=327, Unknown=1, NotChecked=36, Total=420 [2021-12-21 12:08:36,432 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:37,529 INFO L93 Difference]: Finished difference Result 229 states and 285 transitions. [2021-12-21 12:08:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 12:08:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-21 12:08:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:37,531 INFO L225 Difference]: With dead ends: 229 [2021-12-21 12:08:37,531 INFO L226 Difference]: Without dead ends: 194 [2021-12-21 12:08:37,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=890, Unknown=1, NotChecked=64, Total=1190 [2021-12-21 12:08:37,534 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 273 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:37,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 390 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 554 Invalid, 0 Unknown, 197 Unchecked, 0.6s Time] [2021-12-21 12:08:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-21 12:08:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 119. [2021-12-21 12:08:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.264957264957265) internal successors, (148), 118 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2021-12-21 12:08:37,541 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 21 [2021-12-21 12:08:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:37,542 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2021-12-21 12:08:37,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2021-12-21 12:08:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 12:08:37,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:37,546 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:37,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:37,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:37,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash -962615628, now seen corresponding path program 1 times [2021-12-21 12:08:37,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:37,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704351147] [2021-12-21 12:08:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:37,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:37,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704351147] [2021-12-21 12:08:37,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704351147] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936817739] [2021-12-21 12:08:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:37,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:37,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:37,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 12:08:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:38,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-21 12:08:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:38,200 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-12-21 12:08:38,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2021-12-21 12:08:38,239 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-21 12:08:38,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:08:38,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 12:08:38,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:08:38,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-21 12:08:38,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:08:38,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:38,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-12-21 12:08:38,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-21 12:08:38,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-21 12:08:38,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2021-12-21 12:08:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:38,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:38,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 178 [2021-12-21 12:08:38,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 330 treesize of output 318 [2021-12-21 12:08:52,232 INFO L353 Elim1Store]: treesize reduction 35, result has 37.5 percent of original size [2021-12-21 12:08:52,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 104 [2021-12-21 12:08:52,238 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 12:08:52,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 96 [2021-12-21 12:08:52,243 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-12-21 12:08:52,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 104 [2021-12-21 12:08:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:52,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936817739] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:52,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:52,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 24 [2021-12-21 12:08:52,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201127756] [2021-12-21 12:08:52,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:52,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-21 12:08:52,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-21 12:08:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=464, Unknown=8, NotChecked=0, Total=552 [2021-12-21 12:08:52,300 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:55,354 INFO L93 Difference]: Finished difference Result 159 states and 196 transitions. [2021-12-21 12:08:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 12:08:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 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 24 [2021-12-21 12:08:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:55,356 INFO L225 Difference]: With dead ends: 159 [2021-12-21 12:08:55,356 INFO L226 Difference]: Without dead ends: 157 [2021-12-21 12:08:55,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=145, Invalid=837, Unknown=10, NotChecked=0, Total=992 [2021-12-21 12:08:55,356 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 131 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:55,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 277 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 206 Invalid, 0 Unknown, 295 Unchecked, 0.2s Time] [2021-12-21 12:08:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-21 12:08:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2021-12-21 12:08:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 123 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 154 transitions. [2021-12-21 12:08:55,362 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 154 transitions. Word has length 24 [2021-12-21 12:08:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:55,362 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 154 transitions. [2021-12-21 12:08:55,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 154 transitions. [2021-12-21 12:08:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 12:08:55,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:55,363 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:55,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:55,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 12:08:55,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:08:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1702665013, now seen corresponding path program 1 times [2021-12-21 12:08:55,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:55,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763308874] [2021-12-21 12:08:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:55,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:55,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763308874] [2021-12-21 12:08:55,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763308874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862277139] [2021-12-21 12:08:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:55,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:55,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:55,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:08:55,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 12:08:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:55,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-21 12:08:55,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:55,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:55,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2021-12-21 12:08:55,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:55,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2021-12-21 12:08:55,955 INFO L353 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-21 12:08:55,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 68 [2021-12-21 12:08:55,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:55,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:55,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:55,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-12-21 12:08:55,965 INFO L387 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 15 treesize of output 23 [2021-12-21 12:08:55,969 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-21 12:08:55,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-12-21 12:08:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:56,030 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-21 12:08:56,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 49 [2021-12-21 12:08:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:56,048 INFO L353 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-21 12:08:56,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 50 [2021-12-21 12:08:56,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:56,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:56,186 INFO L353 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-21 12:08:56,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 48 [2021-12-21 12:08:56,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:56,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:08:56,211 INFO L353 Elim1Store]: treesize reduction 42, result has 37.3 percent of original size [2021-12-21 12:08:56,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 68 [2021-12-21 12:09:00,426 INFO L353 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-21 12:09:00,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 81 [2021-12-21 12:09:00,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:00,446 INFO L353 Elim1Store]: treesize reduction 14, result has 65.0 percent of original size [2021-12-21 12:09:00,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 75 [2021-12-21 12:09:00,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-21 12:09:00,595 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:00,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-12-21 12:09:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:00,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:09:00,636 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2088 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2088) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2087 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2087) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))) is different from false [2021-12-21 12:09:03,039 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2084 Int) (|v_ULTIMATE.start_main_~item~0#1.base_45| Int) (v_ArrVal_2083 Int)) (or (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2088 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2088) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2087 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2087)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))) is different from false [2021-12-21 12:09:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 12:09:03,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862277139] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:09:03,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:09:03,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 23 [2021-12-21 12:09:03,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493941236] [2021-12-21 12:09:03,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:03,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 12:09:03,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 12:09:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=342, Unknown=9, NotChecked=78, Total=506 [2021-12-21 12:09:03,128 INFO L87 Difference]: Start difference. First operand 124 states and 154 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2021-12-21 12:09:05,191 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (let ((.cse1 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) (.cse3 (select |c_#memory_$Pointer$.offset| .cse0)) (.cse5 (+ |c_ULTIMATE.start_main_~bcki~0#1.offset| 4))) (and (not (= .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~bucket~0#1.base|) 1) (= (select .cse1 .cse2) 0) (= (select .cse3 0) 0) (= |c_ULTIMATE.start_main_~bucket~0#1.offset| 0) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select .cse4 .cse2) 0) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bcki~0#1.base|) .cse5) 0) (= (select .cse3 4) 0) (= |c_ULTIMATE.start_main_~item~0#1.base| 0) (forall ((v_ArrVal_2084 Int) (|v_ULTIMATE.start_main_~item~0#1.base_45| Int) (v_ArrVal_2083 Int)) (or (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2088 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2088) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2087 (Array Int Int))) (= (select (select (let ((.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2087)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bcki~0#1.base|) .cse5) 0))))) is different from false [2021-12-21 12:09:07,195 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (let ((.cse1 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) (.cse3 (select |c_#memory_$Pointer$.offset| .cse0))) (and (not (= .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~bucket~0#1.base|) 1) (= (select .cse1 .cse2) 0) (= (select .cse3 0) 0) (= |c_ULTIMATE.start_main_~bucket~0#1.offset| 0) (= (select .cse4 .cse2) 0) (= (select .cse3 4) 0) (forall ((v_ArrVal_2084 Int) (|v_ULTIMATE.start_main_~item~0#1.base_45| Int) (v_ArrVal_2083 Int)) (or (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2088 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2084)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2088) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2087 (Array Int Int))) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_45|) 0 0) 4 v_ArrVal_2083)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2087)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))))))) is different from false [2021-12-21 12:09:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:07,904 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2021-12-21 12:09:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 12:09:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-21 12:09:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:07,905 INFO L225 Difference]: With dead ends: 151 [2021-12-21 12:09:07,905 INFO L226 Difference]: Without dead ends: 140 [2021-12-21 12:09:07,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=158, Invalid=659, Unknown=11, NotChecked=228, Total=1056 [2021-12-21 12:09:07,906 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 66 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:07,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 287 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 217 Unchecked, 0.1s Time] [2021-12-21 12:09:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-21 12:09:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2021-12-21 12:09:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 132 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2021-12-21 12:09:07,912 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 27 [2021-12-21 12:09:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:07,912 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2021-12-21 12:09:07,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2021-12-21 12:09:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2021-12-21 12:09:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 12:09:07,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:07,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:07,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 12:09:08,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 12:09:08,123 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:09:08,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1921519731, now seen corresponding path program 1 times [2021-12-21 12:09:08,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:08,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103079654] [2021-12-21 12:09:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:08,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:08,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103079654] [2021-12-21 12:09:08,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103079654] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512006133] [2021-12-21 12:09:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:08,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:08,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:08,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:09:08,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 12:09:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:08,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-21 12:09:08,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:09:08,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 30 [2021-12-21 12:09:08,488 INFO L353 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-12-21 12:09:08,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 68 [2021-12-21 12:09:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-21 12:09:08,499 INFO L387 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 15 treesize of output 23 [2021-12-21 12:09:08,505 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-12-21 12:09:08,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 43 [2021-12-21 12:09:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,566 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-21 12:09:08,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-12-21 12:09:08,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:09:08,594 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2021-12-21 12:09:08,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 67 [2021-12-21 12:09:08,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:09:08,777 INFO L353 Elim1Store]: treesize reduction 42, result has 37.3 percent of original size [2021-12-21 12:09:08,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 82 [2021-12-21 12:09:08,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:08,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 12:09:08,790 INFO L353 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-21 12:09:08,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 44 [2021-12-21 12:09:15,653 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2021-12-21 12:09:15,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 95 [2021-12-21 12:09:15,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:15,666 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-21 12:09:15,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 45 [2021-12-21 12:09:15,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-21 12:09:15,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-21 12:09:15,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:15,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-12-21 12:09:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:15,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:09:15,819 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2308 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2308) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2309 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2309) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))) is different from false [2021-12-21 12:09:15,957 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_2308 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2308) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2309 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2309) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))) (and (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0))) is different from false [2021-12-21 12:09:18,153 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2305 Int) (|v_ULTIMATE.start_main_~item~0#1.base_50| Int) (v_ArrVal_2307 Int)) (or (and (= 0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2308 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2308)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2309 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2309) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))) is different from false [2021-12-21 12:09:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 12:09:18,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512006133] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:09:18,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:09:18,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 23 [2021-12-21 12:09:18,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26844888] [2021-12-21 12:09:18,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:18,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 12:09:18,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 12:09:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=320, Unknown=5, NotChecked=114, Total=506 [2021-12-21 12:09:18,221 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2021-12-21 12:09:20,259 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (let ((.cse3 (select |c_#memory_$Pointer$.base| .cse0))) (let ((.cse1 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) (.cse6 (select .cse3 0))) (and (not (= .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~bucket~0#1.base|) 1) (= (select .cse1 .cse2) 0) (= (select .cse3 4) 0) (= |c_ULTIMATE.start_main_~bucket~0#1.offset| 0) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (= (select .cse4 .cse2) 0) (forall ((v_ArrVal_2305 Int) (|v_ULTIMATE.start_main_~item~0#1.base_50| Int) (v_ArrVal_2307 Int)) (or (and (= 0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2308 (Array Int Int))) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2308)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2309 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2309) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))) (not (= .cse6 .cse0)) (= |c_ULTIMATE.start_main_~item~0#1.base| 0) (not (= .cse0 0)) (not (= .cse6 |c_ULTIMATE.start_main_~bucket~0#1.base|))))))) is different from false [2021-12-21 12:09:20,355 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (let ((.cse3 (select |c_#memory_$Pointer$.base| .cse0))) (let ((.cse1 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) (.cse6 (select .cse3 0))) (and (not (= .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~bucket~0#1.base|) 1) (= (select .cse1 .cse2) 0) (= (select .cse3 4) 0) (= |c_ULTIMATE.start_main_~bucket~0#1.offset| 0) (= (select .cse4 .cse2) 0) (forall ((v_ArrVal_2305 Int) (|v_ULTIMATE.start_main_~item~0#1.base_50| Int) (v_ArrVal_2307 Int)) (or (and (= 0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (and (forall ((v_ArrVal_2308 (Array Int Int))) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2308)) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0)) (forall ((v_ArrVal_2309 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2305)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_50|) 0 0) 4 v_ArrVal_2307)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2309) |c_ULTIMATE.start_main_~bucket~0#1.base|) (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4)) 0))))) (not (= .cse6 .cse0)) (not (= .cse0 0)) (not (= .cse6 |c_ULTIMATE.start_main_~bucket~0#1.base|))))))) is different from false [2021-12-21 12:09:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:20,760 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2021-12-21 12:09:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 12:09:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-21 12:09:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:20,762 INFO L225 Difference]: With dead ends: 160 [2021-12-21 12:09:20,762 INFO L226 Difference]: Without dead ends: 149 [2021-12-21 12:09:20,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=154, Invalid=671, Unknown=7, NotChecked=290, Total=1122 [2021-12-21 12:09:20,764 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:20,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 434 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 310 Unchecked, 0.1s Time] [2021-12-21 12:09:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-21 12:09:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2021-12-21 12:09:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 132 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2021-12-21 12:09:20,772 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 27 [2021-12-21 12:09:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:20,772 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2021-12-21 12:09:20,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2021-12-21 12:09:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2021-12-21 12:09:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 12:09:20,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:20,775 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:20,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 12:09:20,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 12:09:20,988 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:09:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1308386699, now seen corresponding path program 1 times [2021-12-21 12:09:20,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:20,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452010734] [2021-12-21 12:09:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:20,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:21,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:21,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452010734] [2021-12-21 12:09:21,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452010734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:09:21,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:09:21,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:09:21,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645586368] [2021-12-21 12:09:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:09:21,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:09:21,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:09:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:09:21,086 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:21,227 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2021-12-21 12:09:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:09:21,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-21 12:09:21,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:21,228 INFO L225 Difference]: With dead ends: 171 [2021-12-21 12:09:21,228 INFO L226 Difference]: Without dead ends: 136 [2021-12-21 12:09:21,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:09:21,228 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:21,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 105 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:09:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-21 12:09:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-12-21 12:09:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.2442748091603053) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2021-12-21 12:09:21,235 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 27 [2021-12-21 12:09:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:21,235 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2021-12-21 12:09:21,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2021-12-21 12:09:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 12:09:21,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:21,236 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:21,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 12:09:21,236 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 12:09:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1764820376, now seen corresponding path program 2 times [2021-12-21 12:09:21,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:21,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316457751] [2021-12-21 12:09:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:21,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:21,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316457751] [2021-12-21 12:09:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316457751] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656366295] [2021-12-21 12:09:21,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:09:21,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:21,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:21,486 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:09:21,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 12:09:21,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:09:21,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:09:21,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 89 conjunts are in the unsatisfiable core [2021-12-21 12:09:21,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2021-12-21 12:09:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2021-12-21 12:09:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2021-12-21 12:09:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-21 12:09:21,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:21,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-21 12:09:21,916 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-12-21 12:09:21,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2021-12-21 12:09:21,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2021-12-21 12:09:21,925 INFO L387 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 11 treesize of output 15 [2021-12-21 12:09:22,009 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 12:09:22,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 12:09:22,050 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 12:09:22,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 12:09:22,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:22,069 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 37 [2021-12-21 12:09:22,098 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-21 12:09:22,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:09:22,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:09:22,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 12:09:22,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:09:22,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:22,393 INFO L387 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 2 case distinctions, treesize of input 37 treesize of output 45 [2021-12-21 12:09:22,550 INFO L353 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-12-21 12:09:22,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 12:09:22,560 INFO L353 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-12-21 12:09:22,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 12:09:22,747 INFO L353 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-12-21 12:09:22,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 24 [2021-12-21 12:09:22,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:09:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 12:09:22,770 INFO L328 TraceCheckSpWp]: Computing backward predicates...