./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/eqn1.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/eqn1.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 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 09:57:46,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 09:57:46,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 09:57:46,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 09:57:46,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 09:57:46,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 09:57:46,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 09:57:46,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 09:57:46,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 09:57:46,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 09:57:46,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 09:57:46,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 09:57:46,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 09:57:46,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 09:57:46,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 09:57:46,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 09:57:46,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 09:57:46,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 09:57:46,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 09:57:46,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 09:57:46,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 09:57:46,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 09:57:46,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 09:57:46,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 09:57:46,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 09:57:46,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 09:57:46,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 09:57:46,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 09:57:46,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 09:57:46,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 09:57:46,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 09:57:46,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 09:57:46,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 09:57:46,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 09:57:46,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 09:57:46,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 09:57:46,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 09:57:46,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 09:57:46,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 09:57:46,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 09:57:46,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 09:57:46,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 09:57:46,097 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 09:57:46,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 09:57:46,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 09:57:46,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 09:57:46,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 09:57:46,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 09:57:46,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 09:57:46,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 09:57:46,099 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 09:57:46,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 09:57:46,100 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 09:57:46,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 09:57:46,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 09:57:46,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 09:57:46,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 09:57:46,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 09:57:46,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 09:57:46,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 09:57:46,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:57:46,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 09:57:46,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 09:57:46,103 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 09:57:46,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 09:57:46,104 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 09:57:46,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 [2023-02-15 09:57:46,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 09:57:46,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 09:57:46,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 09:57:46,355 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 09:57:46,355 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 09:57:46,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn1.c [2023-02-15 09:57:47,385 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 09:57:47,518 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 09:57:47,519 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn1.c [2023-02-15 09:57:47,522 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18df87f5/dd499c459ef84a9688474a69ffbc7464/FLAGbe25938ca [2023-02-15 09:57:47,532 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18df87f5/dd499c459ef84a9688474a69ffbc7464 [2023-02-15 09:57:47,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 09:57:47,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 09:57:47,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 09:57:47,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 09:57:47,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 09:57:47,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2718c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47, skipping insertion in model container [2023-02-15 09:57:47,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 09:57:47,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 09:57:47,635 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/eqn1.c[587,600] [2023-02-15 09:57:47,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:57:47,666 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 09:57:47,674 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/eqn1.c[587,600] [2023-02-15 09:57:47,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:57:47,688 INFO L208 MainTranslator]: Completed translation [2023-02-15 09:57:47,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47 WrapperNode [2023-02-15 09:57:47,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 09:57:47,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 09:57:47,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 09:57:47,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 09:57:47,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,710 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2023-02-15 09:57:47,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 09:57:47,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 09:57:47,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 09:57:47,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 09:57:47,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,725 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 09:57:47,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 09:57:47,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 09:57:47,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 09:57:47,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (1/1) ... [2023-02-15 09:57:47,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:57:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:47,759 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 09:57:47,764 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 09:57:47,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 09:57:47,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 09:57:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 09:57:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 09:57:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 09:57:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 09:57:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 09:57:47,838 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 09:57:47,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 09:57:47,954 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 09:57:47,958 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 09:57:47,958 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 09:57:47,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:57:47 BoogieIcfgContainer [2023-02-15 09:57:47,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 09:57:47,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 09:57:47,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 09:57:47,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 09:57:47,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:57:47" (1/3) ... [2023-02-15 09:57:47,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f5a078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:57:47, skipping insertion in model container [2023-02-15 09:57:47,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:47" (2/3) ... [2023-02-15 09:57:47,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f5a078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:57:47, skipping insertion in model container [2023-02-15 09:57:47,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:57:47" (3/3) ... [2023-02-15 09:57:47,965 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn1.c [2023-02-15 09:57:47,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 09:57:47,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 09:57:48,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 09:57:48,016 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;@4ff6b179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 09:57:48,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 09:57:48,019 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 09:57:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 09:57:48,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:48,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:48,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2023-02-15 09:57:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:48,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576221746] [2023-02-15 09:57:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576221746] [2023-02-15 09:57:48,132 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 09:57:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541612520] [2023-02-15 09:57:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:48,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:48,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:48,135 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 09:57:48,137 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 09:57:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:48,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 09:57:48,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:48,253 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 09:57:48,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 09:57:48,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541612520] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:48,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:48,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 09:57:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334166747] [2023-02-15 09:57:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 09:57:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 09:57:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 09:57:48,312 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 09:57:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:48,348 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-02-15 09:57:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 09:57:48,350 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 09:57:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:48,354 INFO L225 Difference]: With dead ends: 38 [2023-02-15 09:57:48,354 INFO L226 Difference]: Without dead ends: 17 [2023-02-15 09:57:48,356 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 09:57:48,359 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 09:57:48,360 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 09:57:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-15 09:57:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-15 09:57:48,377 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 09:57:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-15 09:57:48,378 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-02-15 09:57:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:48,379 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-15 09:57:48,379 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 09:57:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-15 09:57:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 09:57:48,379 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:48,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:48,387 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 09:57:48,584 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 09:57:48,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2023-02-15 09:57:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:48,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411147768] [2023-02-15 09:57:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:48,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921412348] [2023-02-15 09:57:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:48,621 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 09:57:48,625 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 09:57:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:48,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 09:57:48,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:48,749 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 09:57:48,750 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 09:57:48,757 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 09:57:48,766 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 09:57:48,816 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 09:57:48,830 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 09:57:48,869 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 09:57:48,879 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 09:57:48,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 09:57:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411147768] [2023-02-15 09:57:48,884 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:48,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921412348] [2023-02-15 09:57:48,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921412348] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:48,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:48,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 09:57:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714735148] [2023-02-15 09:57:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 09:57:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 09:57:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 09:57:48,889 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 09:57:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:48,951 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-02-15 09:57:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 09:57:48,952 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 09:57:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:48,953 INFO L225 Difference]: With dead ends: 34 [2023-02-15 09:57:48,953 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 09:57:48,954 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 09:57:48,955 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 09:57:48,958 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 09:57:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 09:57:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 09:57:48,965 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 09:57:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 09:57:48,967 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2023-02-15 09:57:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:48,967 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 09:57:48,967 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 09:57:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 09:57:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 09:57:48,968 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:48,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:48,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:49,172 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 09:57:49,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2023-02-15 09:57:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:49,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004510677] [2023-02-15 09:57:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:49,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:49,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954197775] [2023-02-15 09:57:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:49,195 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 09:57:49,209 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 09:57:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:49,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 09:57:49,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:49,285 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 09:57:49,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 09:57:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004510677] [2023-02-15 09:57:49,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954197775] [2023-02-15 09:57:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954197775] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:49,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:49,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 09:57:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151412799] [2023-02-15 09:57:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 09:57:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 09:57:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 09:57:49,288 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 09:57:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:49,346 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-02-15 09:57:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 09:57:49,348 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 09:57:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:49,349 INFO L225 Difference]: With dead ends: 49 [2023-02-15 09:57:49,349 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 09:57:49,350 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 09:57:49,358 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 09:57:49,359 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 09:57:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 09:57:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2023-02-15 09:57:49,363 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 09:57:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 09:57:49,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2023-02-15 09:57:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:49,363 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 09:57:49,363 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 09:57:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 09:57:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 09:57:49,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:49,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:49,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:49,564 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 09:57:49,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2023-02-15 09:57:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:49,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65109023] [2023-02-15 09:57:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:49,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:49,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857486778] [2023-02-15 09:57:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:49,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:49,584 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 09:57:49,586 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 09:57:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:49,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 09:57:49,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:49,648 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 09:57:49,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:49,664 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 09:57:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65109023] [2023-02-15 09:57:49,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857486778] [2023-02-15 09:57:49,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857486778] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:49,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:49,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-02-15 09:57:49,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949395756] [2023-02-15 09:57:49,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:49,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 09:57:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 09:57:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 09:57:49,667 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 09:57:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:49,735 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-02-15 09:57:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 09:57:49,736 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 09:57:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:49,736 INFO L225 Difference]: With dead ends: 44 [2023-02-15 09:57:49,736 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 09:57:49,737 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 09:57:49,737 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 09:57:49,737 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 09:57:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 09:57:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-02-15 09:57:49,740 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 09:57:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-15 09:57:49,740 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2023-02-15 09:57:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:49,741 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-15 09:57:49,741 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 09:57:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-15 09:57:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 09:57:49,741 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:49,741 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:49,746 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 09:57:49,946 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 09:57:49,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2023-02-15 09:57:49,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:49,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261626838] [2023-02-15 09:57:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:49,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:49,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045225748] [2023-02-15 09:57:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:49,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:49,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:49,982 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 09:57:49,996 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 09:57:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:50,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 09:57:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:50,099 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 09:57:50,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 09:57:50,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:50,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261626838] [2023-02-15 09:57:50,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:50,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045225748] [2023-02-15 09:57:50,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045225748] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:50,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:50,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 09:57:50,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167616261] [2023-02-15 09:57:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:50,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 09:57:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 09:57:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 09:57:50,101 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 09:57:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:50,148 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-02-15 09:57:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 09:57:50,148 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 09:57:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:50,149 INFO L225 Difference]: With dead ends: 41 [2023-02-15 09:57:50,149 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 09:57:50,149 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 09:57:50,150 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 09:57:50,150 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 09:57:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 09:57:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-15 09:57:50,152 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 09:57:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-15 09:57:50,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2023-02-15 09:57:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:50,152 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-15 09:57:50,153 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 09:57:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-15 09:57:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 09:57:50,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:50,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:50,158 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 09:57:50,358 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 09:57:50,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2023-02-15 09:57:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47305182] [2023-02-15 09:57:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:50,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945618130] [2023-02-15 09:57:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:50,375 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 09:57:50,377 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 09:57:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:50,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 09:57:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:50,446 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 09:57:50,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:50,451 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 09:57:50,455 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 09:57:50,465 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 09:57:50,486 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 09:57:50,502 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 09:57:50,507 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 09:57:50,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:50,608 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2023-02-15 09:57:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-15 09:57:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47305182] [2023-02-15 09:57:50,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:50,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945618130] [2023-02-15 09:57:50,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945618130] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:50,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:50,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-15 09:57:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079054316] [2023-02-15 09:57:50,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:50,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 09:57:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 09:57:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-02-15 09:57:50,638 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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 09:57:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:50,898 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-02-15 09:57:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 09:57:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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 16 [2023-02-15 09:57:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:50,899 INFO L225 Difference]: With dead ends: 54 [2023-02-15 09:57:50,899 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 09:57:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=243, Unknown=1, NotChecked=34, Total=380 [2023-02-15 09:57:50,900 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:50,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 62 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2023-02-15 09:57:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 09:57:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 26. [2023-02-15 09:57:50,903 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 09:57:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-02-15 09:57:50,903 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2023-02-15 09:57:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:50,904 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-02-15 09:57:50,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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 09:57:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-02-15 09:57:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 09:57:50,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:50,905 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 09:57:50,917 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 09:57:51,109 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 09:57:51,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2023-02-15 09:57:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:51,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170537638] [2023-02-15 09:57:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:51,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:51,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971619791] [2023-02-15 09:57:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:51,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:51,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:51,125 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 09:57:51,127 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 09:57:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:51,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 09:57:51,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:51,208 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 09:57:51,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:51,217 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 09:57:51,219 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 09:57:51,222 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 09:57:51,226 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 09:57:51,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:51,252 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 09:57:51,252 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 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 09:57:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:51,284 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 09:57:51,284 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 1 case distinctions, treesize of input 38 treesize of output 32 [2023-02-15 09:57:51,414 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 09:57:51,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 34 [2023-02-15 09:57:51,423 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 09:57:51,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:51,801 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 09:57:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:51,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170537638] [2023-02-15 09:57:51,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:51,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971619791] [2023-02-15 09:57:51,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971619791] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:51,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:51,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-02-15 09:57:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689608558] [2023-02-15 09:57:51,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 09:57:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 09:57:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-15 09:57:51,804 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 09:57:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:53,429 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2023-02-15 09:57:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 09:57:53,429 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 09:57:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:53,429 INFO L225 Difference]: With dead ends: 82 [2023-02-15 09:57:53,429 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 09:57:53,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 09:57:53,430 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 143 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:53,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 108 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 09:57:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 09:57:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 46. [2023-02-15 09:57:53,436 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 09:57:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2023-02-15 09:57:53,437 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 20 [2023-02-15 09:57:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:53,437 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2023-02-15 09:57:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 09:57:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-02-15 09:57:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 09:57:53,438 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:53,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:53,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 09:57:53,642 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 09:57:53,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1334592554, now seen corresponding path program 2 times [2023-02-15 09:57:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670713240] [2023-02-15 09:57:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:53,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:53,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045873496] [2023-02-15 09:57:53,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:53,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:53,680 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 09:57:53,682 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 09:57:53,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:53,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:53,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 09:57:53,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:53,765 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 09:57:53,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:53,785 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 09:57:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670713240] [2023-02-15 09:57:53,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045873496] [2023-02-15 09:57:53,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045873496] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:53,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:53,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 09:57:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878151677] [2023-02-15 09:57:53,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 09:57:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 09:57:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 09:57:53,787 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 09:57:53,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:53,885 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-02-15 09:57:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 09:57:53,885 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 09:57:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:53,887 INFO L225 Difference]: With dead ends: 103 [2023-02-15 09:57:53,887 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 09:57:53,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 09:57:53,889 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:53,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 59 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 09:57:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2023-02-15 09:57:53,903 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 09:57:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-02-15 09:57:53,904 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 20 [2023-02-15 09:57:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:53,904 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-02-15 09:57:53,904 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 09:57:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-02-15 09:57:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 09:57:53,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:53,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:53,909 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 09:57:54,109 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 09:57:54,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1146782124, now seen corresponding path program 3 times [2023-02-15 09:57:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007850061] [2023-02-15 09:57:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:54,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:54,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419125619] [2023-02-15 09:57:54,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:57:54,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:54,140 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 09:57:54,142 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 09:57:54,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 09:57:54,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:54,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 09:57:54,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:54,300 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 09:57:54,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:54,338 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 09:57:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007850061] [2023-02-15 09:57:54,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419125619] [2023-02-15 09:57:54,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419125619] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:54,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:54,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 09:57:54,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342914340] [2023-02-15 09:57:54,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:54,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 09:57:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 09:57:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 09:57:54,340 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 09:57:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:54,522 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-02-15 09:57:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 09:57:54,522 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 09:57:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:54,523 INFO L225 Difference]: With dead ends: 113 [2023-02-15 09:57:54,523 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 09:57:54,523 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 09:57:54,524 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 146 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:54,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 65 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 09:57:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 48. [2023-02-15 09:57:54,528 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 09:57:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-02-15 09:57:54,529 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 22 [2023-02-15 09:57:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:54,529 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-02-15 09:57:54,529 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 09:57:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-02-15 09:57:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 09:57:54,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:54,530 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 09:57:54,540 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 09:57:54,730 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 09:57:54,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1083970380, now seen corresponding path program 2 times [2023-02-15 09:57:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694745740] [2023-02-15 09:57:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:54,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:54,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:54,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906844480] [2023-02-15 09:57:54,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:54,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:54,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:54,745 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 09:57:54,747 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 09:57:54,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:54,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:54,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 09:57:54,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:57:54,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:57:54,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:54,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694745740] [2023-02-15 09:57:54,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:54,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906844480] [2023-02-15 09:57:54,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906844480] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:54,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:54,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 09:57:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066324413] [2023-02-15 09:57:54,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:54,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 09:57:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 09:57:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 09:57:54,861 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 09:57:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:54,939 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2023-02-15 09:57:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 09:57:54,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) Word has length 24 [2023-02-15 09:57:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:54,939 INFO L225 Difference]: With dead ends: 64 [2023-02-15 09:57:54,940 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 09:57:54,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-02-15 09:57:54,940 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:54,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:57:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 09:57:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2023-02-15 09:57:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 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 09:57:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-02-15 09:57:54,945 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 24 [2023-02-15 09:57:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:54,945 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-02-15 09:57:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 09:57:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-02-15 09:57:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 09:57:54,946 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:54,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:54,953 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 09:57:55,157 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 09:57:55,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 4 times [2023-02-15 09:57:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:55,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778252796] [2023-02-15 09:57:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:55,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:55,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485026052] [2023-02-15 09:57:55,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 09:57:55,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:55,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:55,182 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 09:57:55,184 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 09:57:55,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 09:57:55,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 09:57:55,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:55,604 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 09:57:55,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,608 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 09:57:55,611 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 09:57:55,623 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 09:57:55,638 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 09:57:55,654 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 09:57:55,685 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 09:57:55,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,689 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 09:57:55,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2023-02-15 09:57:55,729 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 09:57:55,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,735 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 09:57:55,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2023-02-15 09:57:55,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:55,769 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 09:57:55,791 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 09:57:55,796 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 09:57:55,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:57:56,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778252796] [2023-02-15 09:57:56,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485026052] [2023-02-15 09:57:56,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485026052] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:56,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:56,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-15 09:57:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410372904] [2023-02-15 09:57:56,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 09:57:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 09:57:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=278, Unknown=1, NotChecked=0, Total=380 [2023-02-15 09:57:56,150 INFO L87 Difference]: Start difference. First operand 41 states and 45 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 09:57:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:56,779 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2023-02-15 09:57:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 09:57:56,779 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 09:57:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:56,781 INFO L225 Difference]: With dead ends: 114 [2023-02-15 09:57:56,781 INFO L226 Difference]: Without dead ends: 112 [2023-02-15 09:57:56,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=810, Unknown=1, NotChecked=0, Total=1122 [2023-02-15 09:57:56,782 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 296 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 140 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 09:57:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-15 09:57:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 49. [2023-02-15 09:57:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 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 09:57:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-15 09:57:56,788 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2023-02-15 09:57:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-15 09:57:56,788 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 09:57:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-15 09:57:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 09:57:56,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:56,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:56,794 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 09:57:56,994 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 09:57:56,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash 149788298, now seen corresponding path program 3 times [2023-02-15 09:57:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:56,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637706261] [2023-02-15 09:57:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:57,009 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:57,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117072386] [2023-02-15 09:57:57,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:57:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:57,011 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 09:57:57,013 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 09:57:57,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 09:57:57,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:57,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 09:57:57,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:57:57,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:57:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637706261] [2023-02-15 09:57:57,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:57:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117072386] [2023-02-15 09:57:57,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117072386] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:57,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:57:57,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 09:57:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335397476] [2023-02-15 09:57:57,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:57,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 09:57:57,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:57,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 09:57:57,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 09:57:57,247 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:57,386 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2023-02-15 09:57:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 09:57:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 09:57:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:57,387 INFO L225 Difference]: With dead ends: 84 [2023-02-15 09:57:57,387 INFO L226 Difference]: Without dead ends: 75 [2023-02-15 09:57:57,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-02-15 09:57:57,387 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:57,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 75 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-15 09:57:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2023-02-15 09:57:57,392 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 09:57:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-02-15 09:57:57,392 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 26 [2023-02-15 09:57:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:57,392 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-02-15 09:57:57,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-02-15 09:57:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 09:57:57,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:57,393 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 09:57:57,398 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 09:57:57,598 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 09:57:57,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2023-02-15 09:57:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:57,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968421219] [2023-02-15 09:57:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:57,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:57,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:57:57,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753030152] [2023-02-15 09:57:57,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 09:57:57,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:57,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:57,626 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 09:57:57,629 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 09:57:57,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 09:57:57,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:57,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-15 09:57:57,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:57,846 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-02-15 09:57:57,846 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 09:57:57,848 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2023-02-15 09:57:57,865 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2023-02-15 09:57:57,865 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 43 treesize of output 68 [2023-02-15 09:57:57,884 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 09:57:57,904 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 30 treesize of output 17 [2023-02-15 09:57:57,906 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 09:57:57,911 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 09:57:57,919 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 09:57:57,933 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 09:57:57,974 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:57:57,974 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 132 treesize of output 124 [2023-02-15 09:57:57,977 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:57,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:57,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:57,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:57,980 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 113 treesize of output 187 [2023-02-15 09:57:58,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-02-15 09:57:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,013 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 175 treesize of output 88 [2023-02-15 09:57:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,090 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 09:57:58,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2023-02-15 09:57:58,150 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:57:58,151 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 177 treesize of output 161 [2023-02-15 09:57:58,155 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,159 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 123 treesize of output 197 [2023-02-15 09:57:58,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,255 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:58,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:58,258 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-02-15 09:57:58,259 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 09:57:58,474 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-02-15 09:57:58,475 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 83 treesize of output 43 [2023-02-15 09:57:58,486 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 09:57:58,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:58:06,412 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 09:58:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:58:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968421219] [2023-02-15 09:58:06,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:58:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753030152] [2023-02-15 09:58:06,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753030152] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:58:06,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:58:06,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-02-15 09:58:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027449888] [2023-02-15 09:58:06,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:58:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 09:58:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:58:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 09:58:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-02-15 09:58:06,414 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 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 09:58:20,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-15 09:58:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:58:27,383 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2023-02-15 09:58:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 09:58:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 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 09:58:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:58:27,384 INFO L225 Difference]: With dead ends: 128 [2023-02-15 09:58:27,384 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 09:58:27,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=449, Invalid=1903, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 09:58:27,386 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 247 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-02-15 09:58:27,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 186 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 392 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2023-02-15 09:58:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 09:58:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 78. [2023-02-15 09:58:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 77 states have internal predecessors, (92), 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 09:58:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2023-02-15 09:58:27,397 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 28 [2023-02-15 09:58:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:58:27,398 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2023-02-15 09:58:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 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 09:58:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2023-02-15 09:58:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:58:27,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:58:27,400 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:58:27,416 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 09:58:27,617 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 09:58:27,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:58:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:58:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -412561416, now seen corresponding path program 5 times [2023-02-15 09:58:27,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:58:27,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916094228] [2023-02-15 09:58:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:58:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:58:27,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:58:27,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195902068] [2023-02-15 09:58:27,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 09:58:27,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:58:27,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:58:27,629 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 09:58:27,631 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 09:58:32,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 09:58:32,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:58:32,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 09:58:32,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:58:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:58:32,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:58:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:58:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:58:32,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916094228] [2023-02-15 09:58:32,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:58:32,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195902068] [2023-02-15 09:58:32,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195902068] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:58:32,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:58:32,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-02-15 09:58:32,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558979265] [2023-02-15 09:58:32,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:58:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 09:58:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:58:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 09:58:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-02-15 09:58:32,548 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 09:58:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:58:32,707 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2023-02-15 09:58:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 09:58:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) Word has length 32 [2023-02-15 09:58:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:58:32,708 INFO L225 Difference]: With dead ends: 118 [2023-02-15 09:58:32,708 INFO L226 Difference]: Without dead ends: 92 [2023-02-15 09:58:32,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-02-15 09:58:32,709 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:58:32,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 74 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:58:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-15 09:58:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2023-02-15 09:58:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 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 09:58:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2023-02-15 09:58:32,718 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 32 [2023-02-15 09:58:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:58:32,718 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2023-02-15 09:58:32,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 09:58:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2023-02-15 09:58:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:58:32,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:58:32,719 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:58:32,727 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 09:58:32,927 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 09:58:32,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:58:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:58:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1680698556, now seen corresponding path program 6 times [2023-02-15 09:58:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:58:32,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46304461] [2023-02-15 09:58:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:58:32,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:58:32,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:58:32,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035301419] [2023-02-15 09:58:32,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 09:58:32,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:58:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:58:32,949 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 09:58:32,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 09:58:33,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-15 09:58:33,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:58:33,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 09:58:33,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:58:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:58:33,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:58:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:58:33,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:58:33,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46304461] [2023-02-15 09:58:33,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:58:33,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035301419] [2023-02-15 09:58:33,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035301419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:58:33,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:58:33,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-02-15 09:58:33,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748962809] [2023-02-15 09:58:33,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:58:33,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 09:58:33,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:58:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 09:58:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-02-15 09:58:33,479 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 09:58:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:58:33,845 INFO L93 Difference]: Finished difference Result 195 states and 211 transitions. [2023-02-15 09:58:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 09:58:33,845 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 09:58:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:58:33,846 INFO L225 Difference]: With dead ends: 195 [2023-02-15 09:58:33,846 INFO L226 Difference]: Without dead ends: 159 [2023-02-15 09:58:33,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 09:58:33,848 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 295 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:58:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 135 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 09:58:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-15 09:58:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 95. [2023-02-15 09:58:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.127659574468085) internal successors, (106), 94 states have internal predecessors, (106), 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 09:58:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2023-02-15 09:58:33,863 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 32 [2023-02-15 09:58:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:58:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2023-02-15 09:58:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 09:58:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2023-02-15 09:58:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:58:33,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:58:33,864 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:58:33,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 09:58:34,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 09:58:34,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:58:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:58:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1021371332, now seen corresponding path program 7 times [2023-02-15 09:58:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:58:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907205255] [2023-02-15 09:58:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:58:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:58:34,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:58:34,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774835380] [2023-02-15 09:58:34,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 09:58:34,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:58:34,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:58:34,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:58:34,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 09:58:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:58:34,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 09:58:34,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:58:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:58:34,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:58:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:58:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:58:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907205255] [2023-02-15 09:58:34,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 09:58:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774835380] [2023-02-15 09:58:34,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774835380] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:58:34,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 09:58:34,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-02-15 09:58:34,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467242369] [2023-02-15 09:58:34,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 09:58:34,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 09:58:34,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:58:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 09:58:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-02-15 09:58:34,287 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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 09:58:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:58:34,834 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2023-02-15 09:58:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-15 09:58:34,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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 09:58:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:58:34,835 INFO L225 Difference]: With dead ends: 168 [2023-02-15 09:58:34,835 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 09:58:34,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-02-15 09:58:34,837 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 149 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 09:58:34,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 276 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 09:58:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 09:58:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 84. [2023-02-15 09:58:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 83 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 09:58:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2023-02-15 09:58:34,852 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 32 [2023-02-15 09:58:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:58:34,852 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2023-02-15 09:58:34,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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 09:58:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2023-02-15 09:58:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 09:58:34,853 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:58:34,853 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:58:34,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 09:58:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 09:58:35,058 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:58:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:58:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -831401164, now seen corresponding path program 8 times [2023-02-15 09:58:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:58:35,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601185146] [2023-02-15 09:58:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:58:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:58:35,069 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 09:58:35,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767519984] [2023-02-15 09:58:35,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:58:35,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:58:35,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:58:35,070 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:58:35,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 09:58:35,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:58:35,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:58:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-15 09:58:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:58:35,520 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 09:58:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,523 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 09:58:35,527 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 09:58:35,529 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 19 treesize of output 18 [2023-02-15 09:58:35,562 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:58:35,563 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 117 treesize of output 109 [2023-02-15 09:58:35,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,569 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 09:58:35,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,596 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 173 treesize of output 93 [2023-02-15 09:58:35,659 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:58:35,659 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 154 treesize of output 142 [2023-02-15 09:58:35,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,667 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 131 treesize of output 203 [2023-02-15 09:58:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,708 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 198 treesize of output 101 [2023-02-15 09:58:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,793 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 09:58:35,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 58 [2023-02-15 09:58:35,878 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:58:35,879 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 172 treesize of output 152 [2023-02-15 09:58:35,887 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:35,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:35,891 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 123 treesize of output 197 [2023-02-15 09:58:35,898 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 09:58:36,018 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 09:58:36,018 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 244 treesize of output 218 [2023-02-15 09:58:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,035 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 158 treesize of output 240 [2023-02-15 09:58:36,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,186 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:36,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:36,191 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 09:58:36,191 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 101 treesize of output 85 [2023-02-15 09:58:36,692 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-02-15 09:58:36,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 118 treesize of output 58 [2023-02-15 09:58:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:58:36,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:59:18,580 WARN L233 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 172 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:00:15,037 WARN L233 SmtUtils]: Spent 25.57s on a formula simplification. DAG size of input: 188 DAG size of output: 165 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:00:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:00:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:00:15,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601185146] [2023-02-15 10:00:15,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 10:00:15,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767519984] [2023-02-15 10:00:15,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767519984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:00:15,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:00:15,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-02-15 10:00:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124150792] [2023-02-15 10:00:15,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:00:15,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 10:00:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:00:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 10:00:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1203, Unknown=13, NotChecked=0, Total=1406 [2023-02-15 10:00:15,048 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:00:33,813 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse170 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse168 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse102 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse165 (* 8 .cse168)) (.cse166 (* .cse170 8))) (let ((.cse167 (+ .cse166 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse134 (select .cse102 (+ .cse165 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse64 (select .cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse165))) (.cse171 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse162 (* .cse171 8)) (.cse101 (store .cse102 .cse167 (+ .cse134 .cse64))) (.cse25 (+ .cse166 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse169 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse36 (<= .cse171 2147483647)) (.cse53 (<= .cse169 2147483647)) (.cse0 (<= .cse170 2147483647)) (.cse133 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse101) |c_ULTIMATE.start_main_~a~0#1.base|) .cse25)) (.cse161 (* 8 .cse169)) (.cse74 (<= .cse168 2147483647)) (.cse164 (+ 2 .cse64)) (.cse163 (+ .cse162 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse84 (select .cse102 .cse167)) (.cse85 (select .cse13 .cse25)) (.cse15 (+ .cse166 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse73 (select .cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse165)))) (let ((.cse72 (store .cse13 .cse15 (+ .cse73 2))) (.cse82 (store .cse102 .cse163 (+ .cse84 .cse85))) (.cse44 (store .cse13 .cse25 .cse164)) (.cse34 (store .cse13 .cse15 .cse164)) (.cse26 (not .cse74)) (.cse83 (+ .cse161 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse110 (store .cse101 .cse163 (+ .cse133 .cse134 .cse64))) (.cse86 (+ 24 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse132 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (not .cse0)) (.cse1 (not .cse53)) (.cse61 (+ .cse161 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse62 (+ .cse162 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse63 (not .cse36)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (+ .cse162 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse16 (+ .cse161 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse0 (and .cse1 (forall ((v_ArrVal_680 Int)) (= (let ((.cse12 (store (store .cse13 .cse14 (+ 2 (select .cse13 .cse15))) .cse16 v_ArrVal_680))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12))) (let ((.cse10 (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse2 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (store .cse10 .cse11 (+ .cse2 .cse3)))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse2 .cse3 .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse6 .cse7 (+ .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13)))) (or .cse17 (forall ((v_ArrVal_680 Int)) (= (let ((.cse24 (store .cse13 .cse25 v_ArrVal_680))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse23 (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse18 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse22 (store .cse23 .cse11 (+ .cse18 .cse19)))) (let ((.cse20 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse18 .cse19 .cse20 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse22 .cse7 (+ .cse18 .cse19 .cse20))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13))) (or .cse26 (let ((.cse35 (+ 4 .cse64))) (and (or (forall ((v_ArrVal_680 Int)) (= (let ((.cse33 (store (store .cse34 .cse14 .cse35) .cse16 v_ArrVal_680))) (let ((.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33))) (let ((.cse32 (select .cse30 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse27 (select .cse32 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse31 (store .cse32 .cse11 (+ .cse27 .cse28)))) (let ((.cse29 (select (select (store .cse30 |c_ULTIMATE.start_main_~b~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse27 .cse28 .cse29 (select (select (store .cse30 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse31 .cse7 (+ .cse27 .cse28 .cse29))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13)) .cse0) (or (and (or .cse36 (forall ((v_ArrVal_680 Int)) (= (let ((.cse43 (store (store .cse44 .cse14 .cse35) .cse16 v_ArrVal_680))) (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse43))) (let ((.cse42 (select .cse38 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse40 (select .cse42 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse41 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse39 (store .cse42 .cse11 (+ .cse40 .cse41)))) (let ((.cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~b~0#1.base| .cse39) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse39 .cse7 (+ .cse37 .cse40 .cse41))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse40 .cse41))))))) 13))) (or (let ((.cse52 (store .cse44 .cse62 .cse35))) (and (or (forall ((v_ArrVal_680 Int)) (= 13 (let ((.cse51 (store .cse52 .cse16 v_ArrVal_680))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse51))) (let ((.cse50 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse46 (select .cse50 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse49 (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse48 (store .cse50 .cse11 (+ .cse46 .cse49)))) (let ((.cse45 (select (select (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| .cse48) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse45 .cse46 (select (select (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse48 .cse7 (+ .cse45 .cse46 .cse49))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse49))))))))) .cse53) (or .cse1 (forall ((v_ArrVal_680 Int)) (= (let ((.cse60 (store .cse52 .cse61 v_ArrVal_680))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse60))) (let ((.cse59 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse54 (select .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse57 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse59 .cse11 (+ .cse54 .cse57)))) (let ((.cse58 (select (select (store .cse55 |c_ULTIMATE.start_main_~b~0#1.base| .cse56) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse56 .cse7 (+ .cse54 .cse57 .cse58))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse57 .cse58))))))) 13))))) .cse63)) .cse17)))) (or (and .cse1 (forall ((v_ArrVal_680 Int)) (= (let ((.cse71 (store (store .cse72 .cse14 (+ .cse73 4)) .cse16 v_ArrVal_680))) (let ((.cse67 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse71))) (let ((.cse70 (select .cse67 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse65 (select .cse71 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse69 (select .cse70 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse68 (store .cse70 .cse11 (+ .cse65 .cse69)))) (let ((.cse66 (select (select (store .cse67 |c_ULTIMATE.start_main_~b~0#1.base| .cse68) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse65 .cse66 (select (select (store .cse67 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse68 .cse7 (+ .cse65 .cse66 .cse69))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse69))))))) 13))) .cse74) (or (forall ((v_ArrVal_680 Int)) (= (let ((.cse81 (store .cse13 .cse62 v_ArrVal_680))) (let ((.cse78 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse81))) (let ((.cse80 (select .cse78 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse75 (select .cse81 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse76 (select .cse80 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse79 (store .cse80 .cse11 (+ .cse75 .cse76)))) (let ((.cse77 (select (select (store .cse78 |c_ULTIMATE.start_main_~b~0#1.base| .cse79) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse75 .cse76 .cse77 (select (select (store .cse78 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse79 .cse7 (+ .cse75 .cse76 .cse77))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13)) .cse63) (= 13 (select (store .cse82 .cse83 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse82) |c_ULTIMATE.start_main_~a~0#1.base|) .cse62) .cse84 .cse85)) .cse86)) (or .cse74 (and .cse63 (forall ((v_ArrVal_680 Int)) (= (let ((.cse93 (store .cse72 .cse14 v_ArrVal_680))) (let ((.cse88 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse93))) (let ((.cse92 (select .cse88 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse87 (select .cse93 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse91 (select .cse92 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse89 (store .cse92 .cse11 (+ .cse87 .cse91)))) (let ((.cse90 (select (select (store .cse88 |c_ULTIMATE.start_main_~b~0#1.base| .cse89) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse87 (select (select (store .cse88 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse89 .cse7 (+ .cse87 .cse90 .cse91))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse90 .cse91))))))) 13)))) (or .cse36 (forall ((v_ArrVal_680 Int)) (= (let ((.cse100 (store .cse13 .cse14 v_ArrVal_680))) (let ((.cse96 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse100))) (let ((.cse99 (select .cse96 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse94 (select .cse100 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse95 (select .cse99 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse97 (store .cse99 .cse11 (+ .cse94 .cse95)))) (let ((.cse98 (select (select (store .cse96 |c_ULTIMATE.start_main_~b~0#1.base| .cse97) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse94 .cse95 (select (select (store .cse96 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse97 .cse7 (+ .cse94 .cse95 .cse98))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse98))))))) 13))) (= (select .cse101 .cse86) 13) (= (select .cse82 .cse86) 13) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse102 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or .cse0 (forall ((v_ArrVal_680 Int)) (= 13 (let ((.cse109 (store .cse13 .cse15 v_ArrVal_680))) (let ((.cse105 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse109))) (let ((.cse108 (select .cse105 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse103 (select .cse108 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse104 (select .cse109 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse106 (store .cse108 .cse11 (+ .cse103 .cse104)))) (let ((.cse107 (select (select (store .cse105 |c_ULTIMATE.start_main_~b~0#1.base| .cse106) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse103 .cse104 (select (select (store .cse105 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse106 .cse7 (+ .cse103 .cse104 .cse107))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse107)))))))))) (= 13 (select .cse110 .cse86)) (or (and (or .cse17 (and (or .cse63 (forall ((v_ArrVal_680 Int)) (= (let ((.cse117 (store .cse44 .cse62 v_ArrVal_680))) (let ((.cse114 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse117))) (let ((.cse116 (select .cse114 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse111 (select .cse116 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse112 (select .cse117 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse115 (store .cse116 .cse11 (+ .cse111 .cse112)))) (let ((.cse113 (select (select (store .cse114 |c_ULTIMATE.start_main_~b~0#1.base| .cse115) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse111 .cse112 .cse113 (select (select (store .cse114 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse115 .cse7 (+ .cse111 .cse112 .cse113))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13))) (or .cse36 (forall ((v_ArrVal_680 Int)) (= 13 (let ((.cse124 (store .cse44 .cse14 v_ArrVal_680))) (let ((.cse120 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse124))) (let ((.cse123 (select .cse120 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse118 (select .cse123 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse122 (select .cse124 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse121 (store .cse123 .cse11 (+ .cse118 .cse122)))) (let ((.cse119 (select (select (store .cse120 |c_ULTIMATE.start_main_~b~0#1.base| .cse121) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse118 .cse119 (select (select (store .cse120 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse121 .cse7 (+ .cse118 .cse119 .cse122))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse122)))))))))))) (or (forall ((v_ArrVal_680 Int)) (= (let ((.cse131 (store .cse34 .cse14 v_ArrVal_680))) (let ((.cse126 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse131))) (let ((.cse130 (select .cse126 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse125 (select .cse131 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse129 (select .cse130 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse127 (store .cse130 .cse11 (+ .cse125 .cse129)))) (let ((.cse128 (select (select (store .cse126 |c_ULTIMATE.start_main_~b~0#1.base| .cse127) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse125 (select (select (store .cse126 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse127 .cse7 (+ .cse125 .cse128 .cse129))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse128 .cse129))))))) 13)) .cse0)) .cse26) (= (+ 4 .cse132) (select .cse13 .cse8)) (= (+ 2 .cse132) (select .cse13 .cse9)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= 13 (select (store .cse110 .cse83 (+ .cse133 .cse134 .cse64 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse110) |c_ULTIMATE.start_main_~a~0#1.base|) .cse62))) .cse86)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse137 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse136 (select .cse137 8)) (.cse135 (select .cse137 16))) (and (= (+ 3 (select .cse102 .cse11)) .cse135) (= (+ (select .cse102 .cse86) 3) (+ .cse136 (* 2 .cse135))) (= (+ (select .cse102 .cse7) 3) (+ .cse136 .cse135)) (= (+ 2 .cse136) .cse135) (= (+ (select .cse137 0) 4) .cse135) (= 6 .cse135))))) (= 2 .cse132) (or .cse17 (let ((.cse153 (+ 2 .cse85))) (and (or (let ((.cse145 (store .cse13 .cse62 .cse153))) (and (or .cse1 (forall ((v_ArrVal_680 Int)) (= (let ((.cse144 (store .cse145 .cse61 v_ArrVal_680))) (let ((.cse141 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse144))) (let ((.cse143 (select .cse141 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse139 (select .cse144 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse140 (select .cse143 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse142 (store .cse143 .cse11 (+ .cse139 .cse140)))) (let ((.cse138 (select (select (store .cse141 |c_ULTIMATE.start_main_~b~0#1.base| .cse142) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse138 .cse139 .cse140 (select (select (store .cse141 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse142 .cse7 (+ .cse138 .cse139 .cse140))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))) 13))) (or (forall ((v_ArrVal_680 Int)) (= 13 (let ((.cse152 (store .cse145 .cse16 v_ArrVal_680))) (let ((.cse149 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse152))) (let ((.cse151 (select .cse149 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse147 (select .cse151 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse148 (select .cse152 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse150 (store .cse151 .cse11 (+ .cse147 .cse148)))) (let ((.cse146 (select (select (store .cse149 |c_ULTIMATE.start_main_~b~0#1.base| .cse150) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ .cse146 .cse147 .cse148 (select (select (store .cse149 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse150 .cse7 (+ .cse146 .cse147 .cse148))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))))))))) .cse53))) .cse63) (or .cse36 (forall ((v_ArrVal_680 Int)) (= (let ((.cse160 (store (store .cse13 .cse14 .cse153) .cse16 v_ArrVal_680))) (let ((.cse154 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse160))) (let ((.cse159 (select .cse154 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse156 (select .cse160 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse157 (select .cse159 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse155 (store .cse159 .cse11 (+ .cse156 .cse157)))) (let ((.cse158 (select (select (store .cse154 |c_ULTIMATE.start_main_~b~0#1.base| .cse155) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (+ (select (select (store .cse154 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse155 .cse7 (+ .cse156 .cse157 .cse158))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse156 .cse157 .cse158))))))) 13))))))))))))) is different from true [2023-02-15 10:00:41,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:04,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:12,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:18,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:26,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-15 10:01:35,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-15 10:01:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:01:42,106 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2023-02-15 10:01:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-15 10:01:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 10:01:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:01:42,107 INFO L225 Difference]: With dead ends: 137 [2023-02-15 10:01:42,107 INFO L226 Difference]: Without dead ends: 112 [2023-02-15 10:01:42,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 161.1s TimeCoverageRelationStatistics Valid=491, Invalid=3274, Unknown=21, NotChecked=120, Total=3906 [2023-02-15 10:01:42,108 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 105 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 62 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:01:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 200 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 544 Invalid, 4 Unknown, 2 Unchecked, 22.7s Time] [2023-02-15 10:01:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-15 10:01:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2023-02-15 10:01:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 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 10:01:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2023-02-15 10:01:42,126 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 36 [2023-02-15 10:01:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:01:42,126 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2023-02-15 10:01:42,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:01:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2023-02-15 10:01:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 10:01:42,127 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:01:42,127 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:01:42,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 10:01:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 10:01:42,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:01:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:01:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1226631488, now seen corresponding path program 9 times [2023-02-15 10:01:42,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:01:42,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864261237] [2023-02-15 10:01:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:01:42,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:01:42,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 10:01:42,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936096817] [2023-02-15 10:01:42,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:01:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:01:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:01:42,362 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:01:42,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 10:01:44,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 10:01:44,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:01:44,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 87 conjunts are in the unsatisfiable core [2023-02-15 10:01:44,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:01:44,380 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-02-15 10:01:44,380 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 10:01:44,401 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-02-15 10:01:44,401 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 71 [2023-02-15 10:01:44,407 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 10:01:44,420 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 10:01:44,435 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 10:01:44,438 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 10:01:44,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2023-02-15 10:01:44,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:01:44,457 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 19 treesize of output 3 [2023-02-15 10:01:44,481 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:01:44,502 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:01:44,517 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 10:01:44,592 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:01:44,593 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 64 treesize of output 60 [2023-02-15 10:01:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,599 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 10:01:44,657 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:01:44,657 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 64 treesize of output 60 [2023-02-15 10:01:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,664 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 10:01:44,668 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:01:44,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,728 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:01:44,728 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 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 10:01:44,779 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 10:01:44,779 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 64 treesize of output 64 [2023-02-15 10:01:44,786 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-02-15 10:01:44,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 49 treesize of output 95 [2023-02-15 10:01:44,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,816 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-02-15 10:01:44,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 73 treesize of output 32 [2023-02-15 10:01:44,918 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 74 treesize of output 70 [2023-02-15 10:01:44,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:44,931 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-02-15 10:01:44,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 105 [2023-02-15 10:01:44,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 12 [2023-02-15 10:01:45,369 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 191 treesize of output 177 [2023-02-15 10:01:45,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:01:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,383 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 120 treesize of output 194 [2023-02-15 10:01:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,434 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 160 treesize of output 98 [2023-02-15 10:01:45,741 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-02-15 10:01:45,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 155 treesize of output 158 [2023-02-15 10:01:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,810 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 10:01:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:45,832 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 78 treesize of output 24 [2023-02-15 10:01:46,023 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:01:46,024 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 109 treesize of output 99 [2023-02-15 10:01:46,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,035 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 10:01:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,066 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 36 [2023-02-15 10:01:46,194 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:01:46,194 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 109 treesize of output 99 [2023-02-15 10:01:46,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,205 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 10:01:46,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,223 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 91 treesize of output 33 [2023-02-15 10:01:46,366 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-15 10:01:46,366 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 109 treesize of output 99 [2023-02-15 10:01:46,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,375 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 10:01:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:46,394 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 80 treesize of output 33 [2023-02-15 10:01:47,061 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 10:01:47,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 72 [2023-02-15 10:01:47,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:01:47,066 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 15 treesize of output 11 [2023-02-15 10:01:47,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-02-15 10:01:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:01:47,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:02:19,304 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 105 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)