./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/loop-crafted/simple_array_index_value_1-1.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 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:04:23,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:04:23,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:04:23,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:04:23,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:04:23,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:04:23,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:04:23,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:04:23,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:04:23,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:04:23,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:04:23,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:04:23,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:04:23,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:04:23,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:04:23,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:04:23,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:04:23,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:04:23,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:04:23,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:04:23,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:04:23,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:04:23,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:04:23,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:04:23,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:04:23,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:04:23,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:04:23,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:04:23,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:04:23,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:04:23,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:04:23,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:04:23,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:04:23,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:04:23,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:04:23,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:04:23,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:04:23,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:04:23,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:04:23,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:04:23,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:04:23,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:04:23,840 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:04:23,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:04:23,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:04:23,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:04:23,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:04:23,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:04:23,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:04:23,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:04:23,843 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:04:23,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:04:23,843 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:04:23,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:04:23,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:04:23,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:04:23,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:04:23,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:04:23,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:04:23,845 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:04:23,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:04:23,845 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:04:23,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:04:23,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:04:23,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:04:23,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:04:23,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:04:23,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:04:23,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:04:23,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:04:23,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:04:23,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:04:23,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:04:23,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:04:23,848 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:04:23,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:04:23,848 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:04:23,849 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 [2023-02-17 01:04:24,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:04:24,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:04:24,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:04:24,148 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:04:24,148 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:04:24,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-02-17 01:04:25,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:04:25,535 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:04:25,536 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-02-17 01:04:25,540 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80b60b7f/43ac60d5097941789e6408558248d5de/FLAG5be253f8d [2023-02-17 01:04:25,552 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80b60b7f/43ac60d5097941789e6408558248d5de [2023-02-17 01:04:25,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:04:25,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:04:25,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:04:25,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:04:25,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:04:25,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41679eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25, skipping insertion in model container [2023-02-17 01:04:25,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:04:25,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:04:25,727 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-02-17 01:04:25,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:04:25,748 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:04:25,760 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-02-17 01:04:25,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:04:25,775 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:04:25,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25 WrapperNode [2023-02-17 01:04:25,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:04:25,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:04:25,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:04:25,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:04:25,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,799 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-17 01:04:25,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:04:25,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:04:25,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:04:25,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:04:25,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:04:25,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:04:25,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:04:25,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:04:25,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (1/1) ... [2023-02-17 01:04:25,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:04:25,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:04:25,850 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) [2023-02-17 01:04:25,857 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 [2023-02-17 01:04:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:04:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:04:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 01:04:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 01:04:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:04:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:04:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 01:04:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:04:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:04:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 01:04:25,946 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:04:25,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:04:26,057 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:04:26,074 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:04:26,075 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 01:04:26,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:04:26 BoogieIcfgContainer [2023-02-17 01:04:26,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:04:26,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:04:26,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:04:26,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:04:26,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:04:25" (1/3) ... [2023-02-17 01:04:26,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3332c78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:04:26, skipping insertion in model container [2023-02-17 01:04:26,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:04:25" (2/3) ... [2023-02-17 01:04:26,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3332c78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:04:26, skipping insertion in model container [2023-02-17 01:04:26,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:04:26" (3/3) ... [2023-02-17 01:04:26,084 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2023-02-17 01:04:26,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:04:26,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:04:26,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:04:26,191 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6753cd59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:04:26,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:04:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:04:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 01:04:26,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:04:26,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:04:26,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:04:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:04:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1969531013, now seen corresponding path program 1 times [2023-02-17 01:04:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:04:26,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854443493] [2023-02-17 01:04:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:04:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:04:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:26,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:04:26,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854443493] [2023-02-17 01:04:26,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854443493] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:04:26,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:04:26,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 01:04:26,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317278230] [2023-02-17 01:04:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:04:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 01:04:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:04:26,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 01:04:26,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 01:04:26,489 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:04:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:04:26,565 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2023-02-17 01:04:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 01:04:26,568 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 01:04:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:04:26,573 INFO L225 Difference]: With dead ends: 47 [2023-02-17 01:04:26,573 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 01:04:26,575 INFO L412 NwaCegarLoop]: 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 [2023-02-17 01:04:26,578 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:04:26,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:04:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 01:04:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2023-02-17 01:04:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:04:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-02-17 01:04:26,617 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2023-02-17 01:04:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:04:26,617 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-02-17 01:04:26,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:04:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-02-17 01:04:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 01:04:26,619 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:04:26,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:04:26,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 01:04:26,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:04:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:04:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1314333447, now seen corresponding path program 1 times [2023-02-17 01:04:26,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:04:26,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960357017] [2023-02-17 01:04:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:04:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:04:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:04:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960357017] [2023-02-17 01:04:26,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960357017] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:04:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660858136] [2023-02-17 01:04:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:04:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:04:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:04:26,753 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) [2023-02-17 01:04:26,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:04:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:26,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 01:04:26,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:04:26,910 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 38 [2023-02-17 01:04:26,915 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:04:26,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-17 01:04:26,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:26,995 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 20 [2023-02-17 01:04:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:27,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:04:27,336 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 42 [2023-02-17 01:04:27,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:27,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:04:27,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:27,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 471 treesize of output 455 [2023-02-17 01:04:27,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:27,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2268 treesize of output 1080 [2023-02-17 01:04:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:27,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660858136] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:04:27,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:04:27,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 9] total 16 [2023-02-17 01:04:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927503210] [2023-02-17 01:04:27,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:04:27,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 01:04:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:04:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 01:04:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-02-17 01:04:27,929 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:04:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:04:28,315 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-02-17 01:04:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 01:04:28,316 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-17 01:04:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:04:28,316 INFO L225 Difference]: With dead ends: 53 [2023-02-17 01:04:28,317 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 01:04:28,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-02-17 01:04:28,318 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:04:28,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 108 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 01:04:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 01:04:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-02-17 01:04:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 01:04:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-17 01:04:28,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2023-02-17 01:04:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:04:28,327 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-17 01:04:28,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:04:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-17 01:04:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 01:04:28,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:04:28,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:04:28,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:04:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:04:28,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:04:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:04:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1546622032, now seen corresponding path program 1 times [2023-02-17 01:04:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:04:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765012676] [2023-02-17 01:04:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:04:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:04:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 01:04:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:04:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:04:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765012676] [2023-02-17 01:04:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765012676] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:04:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483663686] [2023-02-17 01:04:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:04:28,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:04:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:04:28,679 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) [2023-02-17 01:04:28,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:04:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:04:28,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-17 01:04:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:04:28,746 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 51 treesize of output 46 [2023-02-17 01:04:28,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 90 [2023-02-17 01:04:28,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:04:29,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:29,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 382 treesize of output 404 [2023-02-17 01:04:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:31,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:04:33,032 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 42 [2023-02-17 01:04:33,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:33,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:04:33,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:04:33,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 203 [2023-02-17 01:04:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:04:33,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483663686] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:04:33,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:04:33,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 21 [2023-02-17 01:04:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025824159] [2023-02-17 01:04:33,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:04:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 01:04:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:04:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 01:04:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-02-17 01:04:33,359 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 01:04:35,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:04:45,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:04:47,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-17 01:04:49,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-17 01:04:52,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:04:54,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:04:56,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:03,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:05,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:06,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:10,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:13,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:15,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:17,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:19,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:27,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:32,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:33,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:36,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:43,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:05:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:44,236 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2023-02-17 01:05:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-17 01:05:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-02-17 01:05:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:44,237 INFO L225 Difference]: With dead ends: 122 [2023-02-17 01:05:44,237 INFO L226 Difference]: Without dead ends: 97 [2023-02-17 01:05:44,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=401, Invalid=1753, Unknown=8, NotChecked=0, Total=2162 [2023-02-17 01:05:44,239 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 136 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 103 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:44,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 160 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 302 Invalid, 17 Unknown, 0 Unchecked, 44.3s Time] [2023-02-17 01:05:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-17 01:05:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2023-02-17 01:05:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:05:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-17 01:05:44,256 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2023-02-17 01:05:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:44,256 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-17 01:05:44,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 01:05:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-17 01:05:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 01:05:44,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:44,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:44,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:05:44,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-17 01:05:44,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 937647271, now seen corresponding path program 1 times [2023-02-17 01:05:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322439314] [2023-02-17 01:05:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 01:05:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-17 01:05:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 01:05:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:44,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322439314] [2023-02-17 01:05:44,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322439314] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:44,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578650473] [2023-02-17 01:05:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:44,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:44,603 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) [2023-02-17 01:05:44,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:05:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:44,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 01:05:44,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:44,680 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 51 treesize of output 46 [2023-02-17 01:05:44,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 90 [2023-02-17 01:05:44,704 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:46,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:46,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 382 treesize of output 404 [2023-02-17 01:05:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 01:05:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:05:53,649 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 42 [2023-02-17 01:05:53,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:53,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:05:53,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:53,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 859 treesize of output 573 [2023-02-17 01:05:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:54,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578650473] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:05:54,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:05:54,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 13] total 27 [2023-02-17 01:05:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787214956] [2023-02-17 01:05:54,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:05:54,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-17 01:05:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-17 01:05:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-02-17 01:05:54,304 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 01:05:58,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:04,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:06:08,997 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2023-02-17 01:06:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-17 01:06:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2023-02-17 01:06:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:06:09,000 INFO L225 Difference]: With dead ends: 112 [2023-02-17 01:06:09,000 INFO L226 Difference]: Without dead ends: 79 [2023-02-17 01:06:09,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=356, Invalid=1996, Unknown=0, NotChecked=0, Total=2352 [2023-02-17 01:06:09,002 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 98 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 88 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:06:09,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 185 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 393 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-02-17 01:06:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-17 01:06:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2023-02-17 01:06:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 57 states have internal predecessors, (62), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 01:06:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2023-02-17 01:06:09,033 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 34 [2023-02-17 01:06:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:06:09,033 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2023-02-17 01:06:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 01:06:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2023-02-17 01:06:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 01:06:09,036 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:06:09,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:06:09,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:06:09,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:06:09,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:06:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:06:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash 642599984, now seen corresponding path program 2 times [2023-02-17 01:06:09,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:06:09,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240578535] [2023-02-17 01:06:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:06:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:06:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:06:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-17 01:06:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:06:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-17 01:06:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:06:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 01:06:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:06:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 01:06:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:06:09,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240578535] [2023-02-17 01:06:09,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240578535] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:06:09,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039697776] [2023-02-17 01:06:09,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:06:09,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:06:09,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:06:09,381 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) [2023-02-17 01:06:09,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:06:09,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:06:09,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:06:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 01:06:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:06:09,480 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 51 treesize of output 46 [2023-02-17 01:06:09,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 90 [2023-02-17 01:06:09,501 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:06:13,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:06:13,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 382 treesize of output 404 [2023-02-17 01:06:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 40 refuted. 4 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:06:13,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:06:16,266 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 42 [2023-02-17 01:06:16,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:06:16,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:06:16,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:06:16,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 235 [2023-02-17 01:06:16,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:06:16,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 689 treesize of output 491 [2023-02-17 01:06:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 01:06:16,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039697776] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:06:16,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:06:16,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 15] total 30 [2023-02-17 01:06:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487300496] [2023-02-17 01:06:16,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:06:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-17 01:06:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:06:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-17 01:06:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=740, Unknown=1, NotChecked=0, Total=870 [2023-02-17 01:06:16,992 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 30 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 9 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-17 01:06:19,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:21,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:23,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:25,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:27,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:33,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:46,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:56,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:06:58,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:07:00,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:07:04,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:07:11,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:07:20,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 01:07:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:07:25,375 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2023-02-17 01:07:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-17 01:07:25,376 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 9 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2023-02-17 01:07:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:07:25,377 INFO L225 Difference]: With dead ends: 154 [2023-02-17 01:07:25,377 INFO L226 Difference]: Without dead ends: 96 [2023-02-17 01:07:25,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=489, Invalid=2578, Unknown=13, NotChecked=0, Total=3080 [2023-02-17 01:07:25,380 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 140 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 126 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:07:25,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 234 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 609 Invalid, 15 Unknown, 0 Unchecked, 31.5s Time] [2023-02-17 01:07:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-17 01:07:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2023-02-17 01:07:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 64 states have internal predecessors, (69), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 01:07:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2023-02-17 01:07:25,413 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 45 [2023-02-17 01:07:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:07:25,414 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2023-02-17 01:07:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 9 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-17 01:07:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2023-02-17 01:07:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-17 01:07:25,415 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:07:25,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 01:07:25,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 01:07:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:07:25,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:07:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:07:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1893600441, now seen corresponding path program 3 times [2023-02-17 01:07:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:07:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198144645] [2023-02-17 01:07:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:07:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:07:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-17 01:07:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:25,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-17 01:07:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-17 01:07:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-02-17 01:07:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-17 01:07:25,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:07:25,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198144645] [2023-02-17 01:07:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198144645] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:07:25,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898084428] [2023-02-17 01:07:25,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 01:07:25,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:07:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:07:25,848 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) [2023-02-17 01:07:25,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:07:26,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 01:07:26,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:07:26,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 01:07:26,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:07:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-17 01:07:26,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:07:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 14 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:07:26,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898084428] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:07:26,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:07:26,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 16] total 23 [2023-02-17 01:07:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032368732] [2023-02-17 01:07:26,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:07:26,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:07:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:07:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:07:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-02-17 01:07:26,823 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-17 01:07:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:07:28,061 INFO L93 Difference]: Finished difference Result 176 states and 205 transitions. [2023-02-17 01:07:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 01:07:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 56 [2023-02-17 01:07:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:07:28,062 INFO L225 Difference]: With dead ends: 176 [2023-02-17 01:07:28,062 INFO L226 Difference]: Without dead ends: 111 [2023-02-17 01:07:28,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2023-02-17 01:07:28,064 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 200 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 01:07:28,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 167 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 01:07:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-17 01:07:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 78. [2023-02-17 01:07:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 01:07:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-02-17 01:07:28,095 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 56 [2023-02-17 01:07:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:07:28,095 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-02-17 01:07:28,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-17 01:07:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-02-17 01:07:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-17 01:07:28,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:07:28,096 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 01:07:28,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 01:07:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:07:28,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:07:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:07:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 944832981, now seen corresponding path program 4 times [2023-02-17 01:07:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:07:28,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737484846] [2023-02-17 01:07:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:07:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:07:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-17 01:07:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-17 01:07:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-17 01:07:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-17 01:07:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:07:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-17 01:07:28,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:07:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737484846] [2023-02-17 01:07:28,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737484846] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:07:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804967449] [2023-02-17 01:07:28,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 01:07:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:07:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:07:28,690 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) [2023-02-17 01:07:28,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 01:07:29,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 01:07:29,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:07:29,175 WARN L261 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 110 conjunts are in the unsatisfiable core [2023-02-17 01:07:29,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:07:29,200 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 51 treesize of output 46 [2023-02-17 01:07:29,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 90 [2023-02-17 01:07:29,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 52 [2023-02-17 01:07:29,281 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 221 treesize of output 208 [2023-02-17 01:07:29,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:07:29,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 374 [2023-02-17 01:07:29,337 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:07:29,828 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 4489 treesize of output 4164 [2023-02-17 01:07:29,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:07:29,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 4687 treesize of output 3934 [2023-02-17 01:07:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:07:29,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:07:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:07:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:07:29,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 4879 treesize of output 4255 [2023-02-17 01:07:53,019 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 644120 treesize of output 596641