./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/array-fpi/sqm.c -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 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:16:22,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:16:22,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:16:22,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:16:22,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:16:22,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:16:22,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:16:22,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:16:22,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:16:22,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:16:22,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:16:22,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:16:22,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:16:22,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:16:22,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:16:22,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:16:22,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:16:22,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:16:22,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:16:22,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:16:22,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:16:22,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:16:22,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:16:22,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:16:22,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:16:22,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:16:22,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:16:22,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:16:22,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:16:22,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:16:22,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:16:22,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:16:22,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:16:22,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:16:22,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:16:22,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:16:22,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:16:22,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:16:22,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:16:22,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:16:22,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:16:22,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:16:23,021 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:16:23,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:16:23,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:16:23,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:16:23,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:16:23,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:16:23,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:16:23,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:16:23,023 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:16:23,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:16:23,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:16:23,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:16:23,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:16:23,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:16:23,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:16:23,027 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:16:23,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:16:23,027 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:16:23,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2023-02-15 10:16:23,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:16:23,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:16:23,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:16:23,241 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:16:23,241 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:16:23,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sqm.c [2023-02-15 10:16:24,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:16:24,455 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:16:24,455 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sqm.c [2023-02-15 10:16:24,459 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44329bfd6/f5cc675ae4374ace9ca221216bba1e06/FLAG8b71fd227 [2023-02-15 10:16:24,472 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44329bfd6/f5cc675ae4374ace9ca221216bba1e06 [2023-02-15 10:16:24,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:16:24,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:16:24,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:16:24,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:16:24,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:16:24,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc28a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24, skipping insertion in model container [2023-02-15 10:16:24,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:16:24,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:16:24,606 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/array-fpi/sqm.c[586,599] [2023-02-15 10:16:24,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:16:24,624 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:16:24,632 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/array-fpi/sqm.c[586,599] [2023-02-15 10:16:24,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:16:24,646 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:16:24,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24 WrapperNode [2023-02-15 10:16:24,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:16:24,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:16:24,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:16:24,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:16:24,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,670 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-02-15 10:16:24,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:16:24,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:16:24,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:16:24,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:16:24,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:16:24,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:16:24,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:16:24,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:16:24,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (1/1) ... [2023-02-15 10:16:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:16:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:24,714 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) [2023-02-15 10:16:24,724 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 [2023-02-15 10:16:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:16:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:16:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:16:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:16:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:16:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:16:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:16:24,805 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:16:24,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:16:24,998 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:16:25,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:16:25,003 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 10:16:25,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:16:25 BoogieIcfgContainer [2023-02-15 10:16:25,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:16:25,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:16:25,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:16:25,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:16:25,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:16:24" (1/3) ... [2023-02-15 10:16:25,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3347d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:16:25, skipping insertion in model container [2023-02-15 10:16:25,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:24" (2/3) ... [2023-02-15 10:16:25,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3347d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:16:25, skipping insertion in model container [2023-02-15 10:16:25,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:16:25" (3/3) ... [2023-02-15 10:16:25,010 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2023-02-15 10:16:25,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:16:25,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:16:25,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:16:25,091 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;@6dd26d46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:16:25,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:16:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:16:25,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:25,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:25,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-15 10:16:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444063925] [2023-02-15 10:16:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:25,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444063925] [2023-02-15 10:16:25,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 10:16:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099984608] [2023-02-15 10:16:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:25,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:25,249 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) [2023-02-15 10:16:25,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:16:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:25,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 10:16:25,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:25,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:16:25,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099984608] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:16:25,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:16:25,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:16:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306958913] [2023-02-15 10:16:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:16:25,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:16:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:16:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:16:25,392 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:25,403 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-15 10:16:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:16:25,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:16:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:25,409 INFO L225 Difference]: With dead ends: 38 [2023-02-15 10:16:25,409 INFO L226 Difference]: Without dead ends: 17 [2023-02-15 10:16:25,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:16:25,415 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-15 10:16:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-15 10:16:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-15 10:16:25,455 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-15 10:16:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:25,456 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-15 10:16:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-15 10:16:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:16:25,457 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:25,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:25,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:25,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 10:16:25,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:25,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-15 10:16:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:25,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453222723] [2023-02-15 10:16:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:25,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:25,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993440041] [2023-02-15 10:16:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:25,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:25,725 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) [2023-02-15 10:16:25,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:16:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 10:16:25,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:25,836 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 10:16:25,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-15 10:16:25,844 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 8 treesize of output 7 [2023-02-15 10:16:25,852 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 8 treesize of output 7 [2023-02-15 10:16:25,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:16:25,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2023-02-15 10:16:25,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:16:25,981 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 32 treesize of output 20 [2023-02-15 10:16:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:25,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:16:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453222723] [2023-02-15 10:16:26,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993440041] [2023-02-15 10:16:26,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993440041] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:16:26,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:16:26,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:16:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783231547] [2023-02-15 10:16:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:16:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:16:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:16:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:16:26,004 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:26,072 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-02-15 10:16:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:16:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:16:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:26,074 INFO L225 Difference]: With dead ends: 34 [2023-02-15 10:16:26,074 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 10:16:26,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:16:26,078 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:26,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 10:16:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 10:16:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 10:16:26,085 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2023-02-15 10:16:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 10:16:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 10:16:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:16:26,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:26,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:26,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 10:16:26,291 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,SelfDestructingSolverStorable1 [2023-02-15 10:16:26,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2023-02-15 10:16:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:26,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993713373] [2023-02-15 10:16:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:26,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:26,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173367434] [2023-02-15 10:16:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:26,326 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) [2023-02-15 10:16:26,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:16:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:26,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 10:16:26,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:26,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:16:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993713373] [2023-02-15 10:16:26,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173367434] [2023-02-15 10:16:26,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173367434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:16:26,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:16:26,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:16:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063946878] [2023-02-15 10:16:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:16:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:16:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:16:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:16:26,418 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:26,460 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-02-15 10:16:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:16:26,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:16:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:26,461 INFO L225 Difference]: With dead ends: 49 [2023-02-15 10:16:26,461 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 10:16:26,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:16:26,472 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:26,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 10:16:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2023-02-15 10:16:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 10:16:26,478 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2023-02-15 10:16:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:26,478 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 10:16:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 10:16:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:16:26,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:26,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:26,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 10:16:26,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:26,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2023-02-15 10:16:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:26,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940155839] [2023-02-15 10:16:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:26,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:26,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767811311] [2023-02-15 10:16:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:26,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:26,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:26,722 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) [2023-02-15 10:16:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:16:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:26,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 10:16:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:26,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940155839] [2023-02-15 10:16:26,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767811311] [2023-02-15 10:16:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767811311] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:26,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:26,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-15 10:16:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363141567] [2023-02-15 10:16:26,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:26,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:16:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:16:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:16:26,819 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:26,904 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-02-15 10:16:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:16:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:16:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:26,905 INFO L225 Difference]: With dead ends: 44 [2023-02-15 10:16:26,905 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 10:16:26,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:16:26,911 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:26,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 10:16:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-02-15 10:16:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-15 10:16:26,921 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2023-02-15 10:16:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:26,921 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-15 10:16:26,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-15 10:16:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:16:26,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:26,922 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:26,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:27,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2023-02-15 10:16:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405142407] [2023-02-15 10:16:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:27,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336728850] [2023-02-15 10:16:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:27,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:27,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:27,139 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) [2023-02-15 10:16:27,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 10:16:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:27,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 10:16:27,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:27,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:16:27,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:27,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405142407] [2023-02-15 10:16:27,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336728850] [2023-02-15 10:16:27,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336728850] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:16:27,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:16:27,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:16:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969961978] [2023-02-15 10:16:27,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:16:27,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:16:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:16:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:16:27,240 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:27,290 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-02-15 10:16:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:16:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 10:16:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:27,291 INFO L225 Difference]: With dead ends: 41 [2023-02-15 10:16:27,291 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 10:16:27,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:16:27,292 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:27,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 10:16:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-15 10:16:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-15 10:16:27,296 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2023-02-15 10:16:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:27,296 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-15 10:16:27,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-15 10:16:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:16:27,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:27,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:27,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:27,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:27,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-15 10:16:27,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:27,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100087710] [2023-02-15 10:16:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:27,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29193941] [2023-02-15 10:16:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:27,537 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) [2023-02-15 10:16:27,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 10:16:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:27,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 10:16:27,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:27,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:16:27,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:27,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-15 10:16:27,613 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 8 treesize of output 7 [2023-02-15 10:16:27,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:16:27,639 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 21 treesize of output 20 [2023-02-15 10:16:27,654 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 32 treesize of output 20 [2023-02-15 10:16:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:27,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:27,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:27,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100087710] [2023-02-15 10:16:27,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:27,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29193941] [2023-02-15 10:16:27,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29193941] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:27,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:27,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-02-15 10:16:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692721521] [2023-02-15 10:16:27,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:27,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 10:16:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 10:16:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:16:27,764 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:27,942 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-02-15 10:16:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 10:16:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 10:16:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:27,942 INFO L225 Difference]: With dead ends: 54 [2023-02-15 10:16:27,943 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 10:16:27,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-15 10:16:27,943 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:27,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 59 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:16:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 10:16:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 26. [2023-02-15 10:16:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-02-15 10:16:27,947 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2023-02-15 10:16:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:27,947 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-02-15 10:16:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-02-15 10:16:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 10:16:27,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:27,948 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:27,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:28,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:28,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2023-02-15 10:16:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:28,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718168405] [2023-02-15 10:16:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:28,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:28,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673046624] [2023-02-15 10:16:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:28,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:28,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:28,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 10:16:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 10:16:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:28,267 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-02-15 10:16:28,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2023-02-15 10:16:28,286 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2023-02-15 10:16:28,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 67 [2023-02-15 10:16:28,294 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 8 treesize of output 7 [2023-02-15 10:16:28,310 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 8 treesize of output 7 [2023-02-15 10:16:28,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:16:28,333 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2023-02-15 10:16:28,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:28,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2023-02-15 10:16:28,358 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:28,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2023-02-15 10:16:28,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-02-15 10:16:28,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:16:28,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:28,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 10:16:28,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:28,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-02-15 10:16:28,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-02-15 10:16:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:28,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:28,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:28,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718168405] [2023-02-15 10:16:28,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:28,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673046624] [2023-02-15 10:16:28,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673046624] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:28,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:28,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-02-15 10:16:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132048579] [2023-02-15 10:16:28,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 10:16:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 10:16:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-15 10:16:28,864 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:29,829 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2023-02-15 10:16:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 10:16:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 10:16:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:29,830 INFO L225 Difference]: With dead ends: 82 [2023-02-15 10:16:29,830 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 10:16:29,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2023-02-15 10:16:29,831 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 129 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:29,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 105 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 10:16:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 10:16:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 46. [2023-02-15 10:16:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2023-02-15 10:16:29,836 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 20 [2023-02-15 10:16:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2023-02-15 10:16:29,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-02-15 10:16:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 10:16:29,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:29,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:29,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:30,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1334592554, now seen corresponding path program 2 times [2023-02-15 10:16:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:30,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998248154] [2023-02-15 10:16:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:30,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:30,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826935643] [2023-02-15 10:16:30,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:16:30,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:30,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:30,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:30,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 10:16:30,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:16:30,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:30,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 10:16:30,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:16:30,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:16:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:30,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998248154] [2023-02-15 10:16:30,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:30,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826935643] [2023-02-15 10:16:30,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826935643] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:30,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:30,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 10:16:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899156605] [2023-02-15 10:16:30,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:16:30,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:16:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:16:30,191 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:30,273 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-02-15 10:16:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:16:30,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 10:16:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:30,274 INFO L225 Difference]: With dead ends: 103 [2023-02-15 10:16:30,274 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 10:16:30,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:16:30,274 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 41 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:16:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 10:16:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2023-02-15 10:16:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-02-15 10:16:30,281 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 20 [2023-02-15 10:16:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:30,281 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-02-15 10:16:30,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-02-15 10:16:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 10:16:30,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:30,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:30,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 10:16:30,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1146782124, now seen corresponding path program 3 times [2023-02-15 10:16:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:30,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570265469] [2023-02-15 10:16:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:30,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965398760] [2023-02-15 10:16:30,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:16:30,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:30,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:30,506 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:30,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 10:16:30,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 10:16:30,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 10:16:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:30,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570265469] [2023-02-15 10:16:30,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965398760] [2023-02-15 10:16:30,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965398760] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:30,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:30,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 10:16:30,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247359285] [2023-02-15 10:16:30,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:30,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 10:16:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:30,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 10:16:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:16:30,688 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:30,879 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-02-15 10:16:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 10:16:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 10:16:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:30,880 INFO L225 Difference]: With dead ends: 113 [2023-02-15 10:16:30,880 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 10:16:30,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-02-15 10:16:30,881 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:30,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 86 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:16:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 10:16:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 48. [2023-02-15 10:16:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-02-15 10:16:30,885 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 22 [2023-02-15 10:16:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:30,886 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-02-15 10:16:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-02-15 10:16:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:16:30,886 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:30,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:30,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:31,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:31,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:31,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1083970380, now seen corresponding path program 2 times [2023-02-15 10:16:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285580403] [2023-02-15 10:16:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:31,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958872408] [2023-02-15 10:16:31,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:16:31,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:31,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:31,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:31,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 10:16:31,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:16:31,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:31,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 10:16:31,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:16:31,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:16:31,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:31,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285580403] [2023-02-15 10:16:31,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:31,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958872408] [2023-02-15 10:16:31,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958872408] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:31,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:31,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-02-15 10:16:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981281703] [2023-02-15 10:16:31,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:31,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 10:16:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 10:16:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:16:31,280 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:31,452 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2023-02-15 10:16:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 10:16:31,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:16:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:31,452 INFO L225 Difference]: With dead ends: 83 [2023-02-15 10:16:31,453 INFO L226 Difference]: Without dead ends: 67 [2023-02-15 10:16:31,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2023-02-15 10:16:31,453 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 106 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:31,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 93 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:16:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-15 10:16:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2023-02-15 10:16:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-02-15 10:16:31,457 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2023-02-15 10:16:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:31,458 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-02-15 10:16:31,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-02-15 10:16:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:16:31,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:31,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:31,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 10:16:31,664 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2023-02-15 10:16:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516027981] [2023-02-15 10:16:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:31,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:31,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576485298] [2023-02-15 10:16:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:16:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:31,697 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:31,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 10:16:31,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:16:31,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:31,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 10:16:31,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:31,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:16:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:31,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-15 10:16:31,961 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 8 treesize of output 7 [2023-02-15 10:16:31,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:16:31,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:16:32,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 10:16:32,056 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 57 treesize of output 50 [2023-02-15 10:16:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:32,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:32,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:16:32,088 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 57 treesize of output 50 [2023-02-15 10:16:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:32,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2023-02-15 10:16:32,099 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:16:32,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:32,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 10:16:32,153 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 32 treesize of output 20 [2023-02-15 10:16:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:32,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:32,466 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_375 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_375) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-02-15 10:16:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2023-02-15 10:16:32,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:32,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516027981] [2023-02-15 10:16:32,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:32,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576485298] [2023-02-15 10:16:32,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576485298] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:32,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:32,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-15 10:16:32,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681855538] [2023-02-15 10:16:32,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:32,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 10:16:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 10:16:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=248, Unknown=1, NotChecked=34, Total=380 [2023-02-15 10:16:32,494 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:33,031 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2023-02-15 10:16:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 10:16:33,031 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:16:33,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:33,032 INFO L225 Difference]: With dead ends: 102 [2023-02-15 10:16:33,032 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 10:16:33,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=719, Unknown=1, NotChecked=60, Total=1056 [2023-02-15 10:16:33,033 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 130 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:33,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 154 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 216 Invalid, 2 Unknown, 40 Unchecked, 0.2s Time] [2023-02-15 10:16:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 10:16:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 49. [2023-02-15 10:16:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-02-15 10:16:33,039 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 24 [2023-02-15 10:16:33,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:33,040 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-02-15 10:16:33,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-02-15 10:16:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:16:33,040 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:33,040 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:33,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 10:16:33,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 3 times [2023-02-15 10:16:33,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714242424] [2023-02-15 10:16:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:33,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:16:33,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597632786] [2023-02-15 10:16:33,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:16:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:33,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:33,259 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:33,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 10:16:33,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 10:16:33,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:33,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-15 10:16:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:33,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:16:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-02-15 10:16:33,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-02-15 10:16:33,486 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 8 treesize of output 7 [2023-02-15 10:16:33,491 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 8 treesize of output 7 [2023-02-15 10:16:33,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2023-02-15 10:16:33,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2023-02-15 10:16:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 74 [2023-02-15 10:16:33,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2023-02-15 10:16:33,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 117 [2023-02-15 10:16:33,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 139 [2023-02-15 10:16:33,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:33,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2023-02-15 10:16:33,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:33,824 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:33,826 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-02-15 10:16:33,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 58 [2023-02-15 10:16:34,085 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-02-15 10:16:34,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 41 [2023-02-15 10:16:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:34,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:43,780 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 141 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:16:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:43,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714242424] [2023-02-15 10:16:43,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:16:43,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597632786] [2023-02-15 10:16:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597632786] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:43,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:16:43,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2023-02-15 10:16:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395712636] [2023-02-15 10:16:43,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:43,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-15 10:16:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-15 10:16:43,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2023-02-15 10:16:43,790 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:56,871 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 185 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:17:11,613 WARN L233 SmtUtils]: Spent 13.97s on a formula simplification. DAG size of input: 236 DAG size of output: 181 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:17:13,619 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 [1] [2023-02-15 10:17:19,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:17:38,338 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 171 DAG size of output: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:17:48,078 WARN L233 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 175 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:17:50,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:18:06,645 WARN L233 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 198 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:18:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:18:06,651 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2023-02-15 10:18:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-15 10:18:06,652 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 10:18:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:18:06,652 INFO L225 Difference]: With dead ends: 96 [2023-02-15 10:18:06,652 INFO L226 Difference]: Without dead ends: 70 [2023-02-15 10:18:06,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=638, Invalid=2223, Unknown=1, NotChecked=0, Total=2862 [2023-02-15 10:18:06,654 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 106 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 80 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:18:06,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 163 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 414 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2023-02-15 10:18:06,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-15 10:18:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 38. [2023-02-15 10:18:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:18:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 10:18:06,659 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2023-02-15 10:18:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:18:06,659 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 10:18:06,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:18:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 10:18:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:18:06,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:18:06,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:18:06,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 10:18:06,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 10:18:06,869 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:18:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:18:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 4 times [2023-02-15 10:18:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:18:06,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469668833] [2023-02-15 10:18:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:18:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:18:06,893 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:18:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074875299] [2023-02-15 10:18:06,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:18:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:18:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:18:06,906 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:18:06,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 10:18:07,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:18:07,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:18:07,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-15 10:18:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:18:07,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:18:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-02-15 10:18:07,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-02-15 10:18:07,228 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 8 treesize of output 7 [2023-02-15 10:18:07,234 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 8 treesize of output 7 [2023-02-15 10:18:07,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2023-02-15 10:18:07,258 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2023-02-15 10:18:07,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 39 [2023-02-15 10:18:07,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2023-02-15 10:18:07,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 119 [2023-02-15 10:18:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 31 [2023-02-15 10:18:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 43 treesize of output 44 [2023-02-15 10:18:07,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 154 [2023-02-15 10:18:07,498 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2023-02-15 10:18:07,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2023-02-15 10:18:07,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2023-02-15 10:18:07,600 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:18:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:07,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-02-15 10:18:07,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2023-02-15 10:18:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:18:07,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:18:12,605 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse29 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse28 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse30 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse13 (<= .cse30 2147483647)) (.cse27 (* .cse30 8)) (.cse1 (<= .cse28 2147483647)) (.cse20 (<= .cse29 2147483647)) (.cse25 (* 8 .cse29)) (.cse26 (* .cse28 8)) (.cse24 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (<= .cse24 2147483647)) (.cse10 (+ .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (+ .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (not .cse20)) (.cse12 (not .cse1)) (.cse16 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (not .cse13)) (.cse5 (+ .cse27 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ .cse26 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ .cse25 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse17 (* 8 .cse24))) (and (or .cse0 (let ((.cse2 (+ (select .cse4 (+ (- 34359738368) .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or (and (or .cse1 (and (forall ((v_ArrVal_488 Int)) (or (not (<= .cse2 v_ArrVal_488)) (forall ((v_ArrVal_492 Int) (v_ArrVal_490 Int)) (= 2 (let ((.cse3 (store (store (store .cse4 .cse5 v_ArrVal_488) .cse6 v_ArrVal_490) .cse7 v_ArrVal_492))) (+ (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))))) .cse8)) (or (forall ((v_ArrVal_488 Int) (v_ArrVal_492 Int) (v_ArrVal_490 Int)) (or (not (<= .cse2 v_ArrVal_488)) (= 2 (let ((.cse9 (store (store (store .cse4 .cse5 v_ArrVal_488) .cse10 v_ArrVal_490) .cse11 v_ArrVal_492))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|)))))) .cse12)) .cse13) (or .cse14 (forall ((v_ArrVal_488 Int) (v_ArrVal_492 Int) (v_ArrVal_490 Int)) (or (not (<= .cse2 v_ArrVal_488)) (= 2 (let ((.cse15 (store (store (store .cse4 .cse16 v_ArrVal_488) .cse10 v_ArrVal_490) .cse11 v_ArrVal_492))) (+ (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))))) (or (not .cse0) (let ((.cse18 (+ 2 (select .cse4 (+ .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (and (or (and (or (forall ((v_ArrVal_488 Int) (v_ArrVal_492 Int) (v_ArrVal_490 Int)) (or (not (<= .cse18 v_ArrVal_488)) (= 2 (let ((.cse19 (store (store (store .cse4 .cse16 v_ArrVal_488) .cse10 v_ArrVal_490) .cse7 v_ArrVal_492))) (+ (select .cse19 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse20) (or (forall ((v_ArrVal_488 Int) (v_ArrVal_492 Int) (v_ArrVal_490 Int)) (or (not (<= .cse18 v_ArrVal_488)) (= 2 (let ((.cse21 (store (store (store .cse4 .cse16 v_ArrVal_488) .cse10 v_ArrVal_490) .cse11 v_ArrVal_492))) (+ (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse8)) .cse12) (or .cse1 (forall ((v_ArrVal_488 Int) (v_ArrVal_492 Int) (v_ArrVal_490 Int)) (or (not (<= .cse18 v_ArrVal_488)) (= (let ((.cse22 (store (store (store .cse4 .cse16 v_ArrVal_488) .cse6 v_ArrVal_490) .cse7 v_ArrVal_492))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|))) 2))))) .cse14) (or (forall ((v_ArrVal_488 Int)) (or (not (<= .cse18 v_ArrVal_488)) (forall ((v_ArrVal_492 Int) (v_ArrVal_490 Int)) (= 2 (let ((.cse23 (store (store (store .cse4 .cse5 v_ArrVal_488) .cse6 v_ArrVal_490) .cse7 v_ArrVal_492))) (+ (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))))) .cse13)))))))) is different from false [2023-02-15 10:18:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-15 10:18:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:18:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469668833] [2023-02-15 10:18:12,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:18:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074875299] [2023-02-15 10:18:12,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074875299] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:18:12,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:18:12,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2023-02-15 10:18:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772410070] [2023-02-15 10:18:12,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:18:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 10:18:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:18:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 10:18:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=585, Unknown=1, NotChecked=50, Total=756 [2023-02-15 10:18:12,907 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:18:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:18:20,119 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2023-02-15 10:18:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-15 10:18:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 10:18:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:18:20,119 INFO L225 Difference]: With dead ends: 140 [2023-02-15 10:18:20,119 INFO L226 Difference]: Without dead ends: 138 [2023-02-15 10:18:20,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=594, Invalid=2379, Unknown=1, NotChecked=106, Total=3080 [2023-02-15 10:18:20,120 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 337 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:18:20,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 214 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 407 Invalid, 0 Unknown, 75 Unchecked, 2.0s Time] [2023-02-15 10:18:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-15 10:18:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 70. [2023-02-15 10:18:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:18:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2023-02-15 10:18:20,135 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 28 [2023-02-15 10:18:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:18:20,136 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2023-02-15 10:18:20,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:18:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2023-02-15 10:18:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 10:18:20,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:18:20,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:18:20,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 10:18:20,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 10:18:20,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:18:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:18:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 5 times [2023-02-15 10:18:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:18:20,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477132821] [2023-02-15 10:18:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:18:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:18:20,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:18:20,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911218464] [2023-02-15 10:18:20,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 10:18:20,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:18:20,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:18:20,369 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:18:20,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 10:18:58,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 10:18:58,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:18:58,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-15 10:18:58,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:18:58,869 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-02-15 10:18:58,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2023-02-15 10:18:58,888 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2023-02-15 10:18:58,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 67 [2023-02-15 10:18:58,893 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 8 treesize of output 7 [2023-02-15 10:18:58,907 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 8 treesize of output 7 [2023-02-15 10:18:58,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-02-15 10:18:58,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:18:58,927 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 41 [2023-02-15 10:18:58,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 10:18:58,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:18:59,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2023-02-15 10:18:59,017 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2023-02-15 10:18:59,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 116 [2023-02-15 10:18:59,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 185 [2023-02-15 10:18:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2023-02-15 10:18:59,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 152 [2023-02-15 10:18:59,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2023-02-15 10:18:59,377 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:18:59,518 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:18:59,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 231 treesize of output 207 [2023-02-15 10:18:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 237 [2023-02-15 10:18:59,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,560 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 210 treesize of output 133 [2023-02-15 10:18:59,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,704 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:59,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:18:59,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:18:59,707 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 10:18:59,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 81 [2023-02-15 10:18:59,989 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-02-15 10:18:59,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 46 [2023-02-15 10:19:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:19:00,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:19:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:19:26,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:19:26,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477132821] [2023-02-15 10:19:26,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:19:26,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911218464] [2023-02-15 10:19:26,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911218464] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:19:26,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:19:26,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2023-02-15 10:19:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968964259] [2023-02-15 10:19:26,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:19:26,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 10:19:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:19:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 10:19:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1016, Unknown=1, NotChecked=0, Total=1190 [2023-02-15 10:19:26,732 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:19:42,687 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse137 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse135 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse26 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse138 (* 8 .cse137))) (let ((.cse31 (select .cse26 (+ (- 34359738368) .cse138 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse134 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse136 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse65 (select .cse26 (+ .cse138 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse133 (* .cse135 8))) (let ((.cse3 (+ .cse133 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse66 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse138))) (.cse6 (<= .cse137 2147483647)) (.cse131 (+ 2 .cse65)) (.cse130 (* .cse136 8)) (.cse52 (<= .cse136 2147483647)) (.cse19 (<= .cse135 2147483647)) (.cse49 (<= .cse134 2147483647)) (.cse37 (+ .cse133 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (+ .cse31 2)) (.cse132 (* 8 .cse134)) (.cse27 (+ .cse133 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (select .cse26 .cse27)) (.cse63 (select .cse26 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse4 (+ .cse132 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (store .cse26 .cse37 .cse28)) (.cse30 (+ .cse132 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (+ .cse132 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (not .cse49)) (.cse20 (not .cse19)) (.cse51 (not .cse52)) (.cse29 (+ .cse130 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse86 (store .cse26 .cse27 .cse131)) (.cse12 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse104 (store .cse26 .cse37 .cse131)) (.cse16 (+ .cse130 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse80 (not .cse6)) (.cse64 (store .cse0 .cse3 (+ 2 .cse65 .cse66))) (.cse1 (+ .cse130 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_ArrVal_564 Int)) (= (select (store (store .cse0 .cse1 (+ 2 .cse2 (select .cse0 .cse3))) .cse4 v_ArrVal_564) .cse5) 9)) (or .cse6 (let ((.cse17 (+ .cse31 4))) (and (or (and .cse7 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse14 (store (store .cse15 .cse16 .cse17) .cse18 v_ArrVal_559))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse8 (select .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse8 .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse11 .cse12 (+ .cse8 2 .cse9))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) .cse19) (or .cse20 (forall ((v_ArrVal_559 Int)) (= (let ((.cse25 (store (store (store .cse26 .cse27 .cse28) .cse29 .cse17) .cse30 v_ArrVal_559))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse21 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse24 (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse23 .cse12 (+ .cse21 2 .cse24))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse24))))) 5)))))) (or (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse36 (store .cse26 .cse37 v_ArrVal_559))) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse35 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse32 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse33 .cse12 (+ 2 .cse34 .cse35))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse34 .cse35))))))) .cse19) (or .cse20 (let ((.cse50 (+ 2 .cse2))) (and (or (let ((.cse43 (store .cse26 .cse29 .cse50))) (and (or .cse7 (forall ((v_ArrVal_559 Int)) (= (let ((.cse42 (store .cse43 .cse30 v_ArrVal_559))) (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse42))) (let ((.cse40 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse38 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse41 (select .cse42 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse40 .cse12 (+ .cse38 2 .cse41))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse41))))) 5))) (or (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse48 (store .cse43 .cse18 v_ArrVal_559))) (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse48))) (let ((.cse47 (select .cse46 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse44 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse45 (select .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse44 .cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse47 .cse12 (+ 2 .cse44 .cse45))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13)))))))) .cse49))) .cse51) (or .cse52 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse57 (store (store .cse26 .cse16 .cse50) .cse18 v_ArrVal_559))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse57))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse53 (select .cse57 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse56 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse53 (select (select (store .cse54 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse55 .cse12 (+ .cse53 .cse56 2))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse56))))))))))) (or .cse51 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse62 (store .cse26 .cse29 v_ArrVal_559))) (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse62))) (let ((.cse61 (select .cse60 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse58 (select .cse61 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse59 (select .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse58 .cse59 (select (select (store .cse60 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse61 .cse12 (+ .cse58 2 .cse59))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) (forall ((v_ArrVal_564 Int)) (= (select (store .cse0 .cse1 v_ArrVal_564) .cse5) 9)) (= .cse63 5) (= .cse63 (+ 2 (select .cse26 .cse13))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (forall ((v_ArrVal_564 Int)) (= (select (store (store .cse64 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse64) |c_ULTIMATE.start_main_~b~0#1.base|) .cse27) .cse65 4 .cse66)) .cse4 v_ArrVal_564) .cse5) 9)) (or .cse6 (and (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse71 (store .cse15 .cse16 v_ArrVal_559))) (let ((.cse68 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse71))) (let ((.cse69 (select .cse68 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse67 (select .cse71 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse70 (select .cse69 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse67 (select (select (store .cse68 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse69 .cse12 (+ .cse67 2 .cse70))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse70))))))) .cse51)) (forall ((v_ArrVal_564 Int)) (= (select (store .cse0 .cse3 v_ArrVal_564) .cse5) 9)) (or .cse20 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse76 (store .cse26 .cse27 v_ArrVal_559))) (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse76))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse72 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse73 (select .cse75 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse72 .cse73 (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse75 .cse12 (+ .cse72 2 .cse73))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (exists ((|ULTIMATE.start_main_~b~0#1.base| Int)) (let ((.cse79 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse77 (select .cse79 8)) (.cse78 (select .cse79 0))) (and (= .cse77 3) (= .cse78 1) (= (select .cse0 .cse12) (+ 3 .cse78)) (= (select .cse79 16) 5) (= (select .cse0 .cse5) (+ .cse77 5 .cse78)))))) (or .cse80 (let ((.cse87 (+ .cse65 4))) (and (or .cse20 (and (or .cse52 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse85 (store (store .cse86 .cse16 .cse87) .cse18 v_ArrVal_559))) (let ((.cse82 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse85))) (let ((.cse83 (select .cse82 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse81 (select .cse83 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse84 (select .cse85 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse81 (select (select (store .cse82 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse83 .cse12 (+ .cse81 .cse84 2))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse84)))))))) (or (let ((.cse93 (store .cse86 .cse29 .cse87))) (and (or .cse7 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse92 (store .cse93 .cse30 v_ArrVal_559))) (let ((.cse89 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse92))) (let ((.cse90 (select .cse89 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse88 (select .cse90 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse91 (select .cse92 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse88 (select (select (store .cse89 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse90 .cse12 (+ .cse88 2 .cse91))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse91)))))))) (or (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse98 (store .cse93 .cse18 v_ArrVal_559))) (let ((.cse96 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse98))) (let ((.cse97 (select .cse96 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse94 (select .cse98 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse95 (select .cse97 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse94 .cse95 (select (select (store .cse96 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse97 .cse12 (+ .cse94 2 .cse95))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13)))))))) .cse49))) .cse51))) (or (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse103 (store (store .cse104 .cse16 .cse87) .cse18 v_ArrVal_559))) (let ((.cse99 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse103))) (let ((.cse100 (select .cse99 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse101 (select .cse103 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse102 (select .cse100 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse99 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse100 .cse12 (+ 2 .cse101 .cse102))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse101 .cse102))))))) .cse19)))) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or (and (forall ((v_ArrVal_559 Int)) (= (let ((.cse109 (store (store .cse26 .cse16 (+ 2 (select .cse26 .cse37))) .cse18 v_ArrVal_559))) (let ((.cse107 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse109))) (let ((.cse108 (select .cse107 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse105 (select .cse109 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse106 (select .cse108 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse105 .cse106 (select (select (store .cse107 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse108 .cse12 (+ .cse105 .cse106 2))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13)))))) 5)) .cse7) .cse19) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse52 (forall ((v_ArrVal_559 Int)) (= (let ((.cse114 (store .cse26 .cse16 v_ArrVal_559))) (let ((.cse110 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse114))) (let ((.cse111 (select .cse110 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse112 (select .cse114 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse113 (select .cse111 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse110 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse111 .cse12 (+ .cse112 2 .cse113))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse112 .cse113))))) 5))) (or (and (or .cse20 (and (or .cse51 (forall ((v_ArrVal_559 Int)) (= (let ((.cse119 (store .cse86 .cse29 v_ArrVal_559))) (let ((.cse116 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse119))) (let ((.cse117 (select .cse116 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse115 (select .cse119 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse118 (select .cse117 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse115 (select (select (store .cse116 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse117 .cse12 (+ .cse115 2 .cse118))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse118))))) 5))) (or .cse52 (forall ((v_ArrVal_559 Int)) (= 5 (let ((.cse124 (store .cse86 .cse16 v_ArrVal_559))) (let ((.cse122 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse124))) (let ((.cse123 (select .cse122 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse120 (select .cse123 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse121 (select .cse124 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse120 .cse121 (select (select (store .cse122 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse123 .cse12 (+ .cse120 2 .cse121))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13))))))))))) (or (forall ((v_ArrVal_559 Int)) (= (let ((.cse129 (store .cse104 .cse16 v_ArrVal_559))) (let ((.cse126 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse129))) (let ((.cse127 (select .cse126 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse125 (select .cse129 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse128 (select .cse127 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse125 (select (select (store .cse126 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse127 .cse12 (+ 2 .cse125 .cse128))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse13) .cse128))))) 5)) .cse19)) .cse80) (forall ((v_ArrVal_564 Int)) (= (select (store .cse64 .cse1 v_ArrVal_564) .cse5) 9)))))))) is different from true [2023-02-15 10:19:44,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:19:48,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:19:50,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:20:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:20:27,531 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2023-02-15 10:20:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-15 10:20:27,531 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 10:20:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:20:27,532 INFO L225 Difference]: With dead ends: 139 [2023-02-15 10:20:27,532 INFO L226 Difference]: Without dead ends: 137 [2023-02-15 10:20:27,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 73.5s TimeCoverageRelationStatistics Valid=645, Invalid=4045, Unknown=6, NotChecked=134, Total=4830 [2023-02-15 10:20:27,533 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:20:27,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 216 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 484 Invalid, 1 Unknown, 2 Unchecked, 13.0s Time] [2023-02-15 10:20:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-15 10:20:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 74. [2023-02-15 10:20:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 73 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:20:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2023-02-15 10:20:27,550 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 32 [2023-02-15 10:20:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:20:27,551 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2023-02-15 10:20:27,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:20:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2023-02-15 10:20:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 10:20:27,554 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:20:27,554 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:20:27,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 10:20:27,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:20:27,761 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:20:27,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:20:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash 480713034, now seen corresponding path program 5 times [2023-02-15 10:20:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:20:27,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347041329] [2023-02-15 10:20:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:20:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:20:27,774 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:20:27,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894648117] [2023-02-15 10:20:27,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 10:20:27,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:20:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:20:27,802 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:20:27,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process