./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/ss3.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 5805614faff907ef6adf6c59906ce41481de02c5b77e55fb631cc39640689370 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:16:41,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:16:41,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:16:41,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:16:41,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:16:41,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:16:41,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:16:41,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:16:41,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:16:41,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:16:41,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:16:41,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:16:41,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:16:41,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:16:41,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:16:41,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:16:41,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:16:41,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:16:41,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:16:41,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:16:41,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:16:41,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:16:41,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:16:41,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:16:41,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:16:41,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:16:41,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:16:41,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:16:41,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:16:41,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:16:41,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:16:41,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:16:41,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:16:41,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:16:41,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:16:41,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:16:41,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:16:41,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:16:41,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:16:41,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:16:41,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:16:41,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:16:41,771 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:16:41,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:16:41,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:16:41,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:16:41,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:16:41,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:16:41,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:16:41,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:16:41,774 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:16:41,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:16:41,775 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:16:41,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:16:41,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:16:41,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:16:41,776 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:16:41,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:16:41,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:16:41,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:16:41,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:16:41,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:16:41,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:16:41,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:16:41,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:16:41,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:16:41,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:16:41,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:16:41,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:16:41,779 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:16:41,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:16:41,779 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:16:41,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5805614faff907ef6adf6c59906ce41481de02c5b77e55fb631cc39640689370 [2023-02-15 19:16:42,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:16:42,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:16:42,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:16:42,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:16:42,061 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:16:42,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss3.c [2023-02-15 19:16:43,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:16:43,394 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:16:43,394 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss3.c [2023-02-15 19:16:43,400 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3766018f7/df4357e03398409992c14e67c723ff74/FLAG2b039ac15 [2023-02-15 19:16:43,415 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3766018f7/df4357e03398409992c14e67c723ff74 [2023-02-15 19:16:43,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:16:43,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:16:43,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:16:43,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:16:43,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:16:43,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b797e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43, skipping insertion in model container [2023-02-15 19:16:43,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:16:43,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:16:43,574 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/ss3.c[586,599] [2023-02-15 19:16:43,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:16:43,610 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:16:43,623 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/ss3.c[586,599] [2023-02-15 19:16:43,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:16:43,642 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:16:43,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43 WrapperNode [2023-02-15 19:16:43,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:16:43,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:16:43,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:16:43,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:16:43,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,671 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2023-02-15 19:16:43,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:16:43,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:16:43,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:16:43,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:16:43,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:16:43,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:16:43,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:16:43,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:16:43,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (1/1) ... [2023-02-15 19:16:43,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:16:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:43,730 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 19:16:43,738 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 19:16:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:16:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:16:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 19:16:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 19:16:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:16:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:16:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:16:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 19:16:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 19:16:43,874 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:16:43,890 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:16:44,099 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:16:44,105 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:16:44,105 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-15 19:16:44,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:16:44 BoogieIcfgContainer [2023-02-15 19:16:44,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:16:44,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:16:44,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:16:44,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:16:44,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:16:43" (1/3) ... [2023-02-15 19:16:44,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4600c935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:16:44, skipping insertion in model container [2023-02-15 19:16:44,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:16:43" (2/3) ... [2023-02-15 19:16:44,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4600c935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:16:44, skipping insertion in model container [2023-02-15 19:16:44,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:16:44" (3/3) ... [2023-02-15 19:16:44,114 INFO L112 eAbstractionObserver]: Analyzing ICFG ss3.c [2023-02-15 19:16:44,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:16:44,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:16:44,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:16:44,176 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;@54c4df0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:16:44,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:16:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 19:16:44,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:44,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:44,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2023-02-15 19:16:44,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:44,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993962926] [2023-02-15 19:16:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:16:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:16:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993962926] [2023-02-15 19:16:44,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 19:16:44,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960205057] [2023-02-15 19:16:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:44,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:44,381 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 19:16:44,395 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 19:16:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:16:44,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 19:16:44,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:44,503 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 19:16:44,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:16:44,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960205057] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:16:44,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:16:44,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 19:16:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892377481] [2023-02-15 19:16:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:16:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 19:16:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:16:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 19:16:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:16:44,550 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:16:44,564 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2023-02-15 19:16:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 19:16:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 19:16:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:16:44,575 INFO L225 Difference]: With dead ends: 50 [2023-02-15 19:16:44,575 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 19:16:44,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 19:16:44,580 INFO L413 NwaCegarLoop]: 32 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, 32 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 19:16:44,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:16:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 19:16:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 19:16:44,606 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 19:16:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 19:16:44,608 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2023-02-15 19:16:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:16:44,609 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 19:16:44,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 19:16:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 19:16:44,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:44,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:44,620 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 19:16:44,819 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 19:16:44,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2023-02-15 19:16:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:44,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998433248] [2023-02-15 19:16:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:44,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:16:44,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:16:44,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998433248] [2023-02-15 19:16:44,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 19:16:44,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620577305] [2023-02-15 19:16:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:44,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:44,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:44,887 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 19:16:44,890 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 19:16:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:16:44,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 19:16:44,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:45,048 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 19:16:45,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 19:16:45,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620577305] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:16:45,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:16:45,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 19:16:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794957238] [2023-02-15 19:16:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:16:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 19:16:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:16:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 19:16:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 19:16:45,052 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:16:45,135 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2023-02-15 19:16:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 19:16:45,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 19:16:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:16:45,137 INFO L225 Difference]: With dead ends: 49 [2023-02-15 19:16:45,137 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 19:16:45,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 19:16:45,141 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:16:45,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 13 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:16:45,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 19:16:45,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-02-15 19:16:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-15 19:16:45,155 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2023-02-15 19:16:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:16:45,156 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-15 19:16:45,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-15 19:16:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:16:45,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:45,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:45,163 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 19:16:45,363 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 19:16:45,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2023-02-15 19:16:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031559588] [2023-02-15 19:16:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:45,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:45,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:16:45,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603909224] [2023-02-15 19:16:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:45,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:45,399 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 19:16:45,415 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 19:16:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:16:45,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-15 19:16:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:45,536 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 19:16:45,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:16:45,584 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 23 treesize of output 22 [2023-02-15 19:16:45,713 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 36 treesize of output 23 [2023-02-15 19:16:45,815 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 26 treesize of output 21 [2023-02-15 19:16:45,916 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 36 treesize of output 23 [2023-02-15 19:16:45,991 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 36 treesize of output 23 [2023-02-15 19:16:46,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 33 [2023-02-15 19:16:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:16:46,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:16:46,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:16:46,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:16:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031559588] [2023-02-15 19:16:46,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:16:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603909224] [2023-02-15 19:16:46,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603909224] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:16:46,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:16:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2023-02-15 19:16:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333577578] [2023-02-15 19:16:46,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:16:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 19:16:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:16:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 19:16:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2023-02-15 19:16:46,815 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:16:55,700 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2023-02-15 19:16:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 19:16:55,701 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 19:16:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:16:55,703 INFO L225 Difference]: With dead ends: 70 [2023-02-15 19:16:55,703 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 19:16:55,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=331, Invalid=1561, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 19:16:55,706 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 19:16:55,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 87 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 19:16:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 19:16:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2023-02-15 19:16:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-02-15 19:16:55,723 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 27 [2023-02-15 19:16:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:16:55,724 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-02-15 19:16:55,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-02-15 19:16:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:16:55,725 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:55,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:55,735 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 19:16:55,933 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 19:16:55,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1190930620, now seen corresponding path program 2 times [2023-02-15 19:16:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:55,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972895442] [2023-02-15 19:16:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:55,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:16:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046492299] [2023-02-15 19:16:55,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:16:55,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:55,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:55,990 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 19:16:56,010 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 19:16:56,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:16:56,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:16:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 19:16:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:16:56,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:16:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:16:56,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:16:56,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972895442] [2023-02-15 19:16:56,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:16:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046492299] [2023-02-15 19:16:56,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046492299] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:16:56,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:16:56,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 19:16:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604598111] [2023-02-15 19:16:56,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:16:56,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 19:16:56,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:16:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 19:16:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:16:56,138 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:16:56,282 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2023-02-15 19:16:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 19:16:56,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 19:16:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:16:56,284 INFO L225 Difference]: With dead ends: 109 [2023-02-15 19:16:56,284 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 19:16:56,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-15 19:16:56,286 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:16:56,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 31 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:16:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 19:16:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2023-02-15 19:16:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-15 19:16:56,297 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 29 [2023-02-15 19:16:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:16:56,298 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-15 19:16:56,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-15 19:16:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:16:56,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:56,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:56,307 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 19:16:56,507 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 19:16:56,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:56,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash 264308668, now seen corresponding path program 3 times [2023-02-15 19:16:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:56,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793001510] [2023-02-15 19:16:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:56,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:16:56,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249132621] [2023-02-15 19:16:56,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:16:56,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:56,564 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 19:16:56,593 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 19:16:56,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:16:56,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:16:56,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 19:16:56,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:16:56,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:16:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:16:56,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:16:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793001510] [2023-02-15 19:16:56,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:16:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249132621] [2023-02-15 19:16:56,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249132621] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:16:56,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:16:56,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 19:16:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380227234] [2023-02-15 19:16:56,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:16:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 19:16:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:16:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 19:16:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 19:16:56,735 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:16:56,862 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2023-02-15 19:16:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 19:16:56,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 19:16:56,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:16:56,864 INFO L225 Difference]: With dead ends: 58 [2023-02-15 19:16:56,864 INFO L226 Difference]: Without dead ends: 42 [2023-02-15 19:16:56,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 19:16:56,872 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:16:56,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 21 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:16:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-15 19:16:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-02-15 19:16:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 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 19:16:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-02-15 19:16:56,886 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2023-02-15 19:16:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:16:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-02-15 19:16:56,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:16:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-02-15 19:16:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 19:16:56,890 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:16:56,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:16:56,896 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 19:16:57,096 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 19:16:57,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:16:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:16:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 982389828, now seen corresponding path program 4 times [2023-02-15 19:16:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:16:57,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478412998] [2023-02-15 19:16:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:16:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:16:57,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:16:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039925883] [2023-02-15 19:16:57,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 19:16:57,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:16:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:16:57,158 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 19:16:57,164 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 19:16:57,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 19:16:57,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:16:57,270 WARN L261 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 88 conjunts are in the unsatisfiable core [2023-02-15 19:16:57,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:16:57,289 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 19:16:57,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:16:57,340 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 23 treesize of output 22 [2023-02-15 19:16:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,407 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:57,410 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:16:57,410 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 35 treesize of output 37 [2023-02-15 19:16:57,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,556 INFO L321 Elim1Store]: treesize reduction 96, result has 19.3 percent of original size [2023-02-15 19:16:57,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 50 [2023-02-15 19:16:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,670 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-15 19:16:57,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 58 [2023-02-15 19:16:57,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,943 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:57,945 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:57,963 INFO L321 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2023-02-15 19:16:57,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 58 treesize of output 72 [2023-02-15 19:16:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:58,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:58,116 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-02-15 19:16:58,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 49 [2023-02-15 19:16:58,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:58,301 INFO L321 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2023-02-15 19:16:58,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 53 treesize of output 55 [2023-02-15 19:16:58,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:58,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2023-02-15 19:16:58,568 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:16:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:16:58,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2023-02-15 19:16:58,690 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2023-02-15 19:16:58,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 35 [2023-02-15 19:16:58,775 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:16:58,775 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 60 treesize of output 40 [2023-02-15 19:16:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:16:58,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:17:06,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:17:06,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:17:06,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:17:06,202 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:17:06,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-02-15 19:17:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:17:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:17:06,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478412998] [2023-02-15 19:17:06,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:17:06,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039925883] [2023-02-15 19:17:06,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039925883] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:17:06,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:17:06,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2023-02-15 19:17:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657982683] [2023-02-15 19:17:06,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:17:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 19:17:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:17:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 19:17:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2263, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 19:17:06,207 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:01,391 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse83 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse54 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse82 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse83))) (let ((.cse15 (select .cse54 .cse82)) (.cse14 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse33 (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse83 8)) (.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse14))))) (let ((.cse16 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse12 (+ .cse14 (select .cse54 .cse17))) (.cse0 (not .cse33)) (.cse2 (< (+ |c_ULTIMATE.start_main_~i~0#1| 2) c_~N~0)) (.cse32 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (.cse1 (not (< 1 c_~N~0))) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse31 (store .cse54 .cse82 1)) (.cse13 (+ c_~N~0 (* c_~N~0 c_~N~0)))) (and (or .cse0 .cse1 .cse2 (= (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse12)))) (let ((.cse10 (store (store (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| .cse3))) (store .cse9 .cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse6))))))) .cse13)) (or .cse0 (= (+ .cse14 .cse15 (select .cse16 .cse17)) .cse13)) (or .cse0 .cse1 .cse2 (forall ((|v_ULTIMATE.start_main_~i~0#1_79| Int)) (or (not (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 2) c_~N~0) (= (let ((.cse22 (let ((.cse30 (store .cse31 .cse17 1))) (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30))) (store .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse26 (select .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse29 (* |v_ULTIMATE.start_main_~i~0#1_79| 8))) (let ((.cse27 (select .cse30 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29))) (.cse28 (select .cse26 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse27 .cse28 (select (select (store .cse25 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse28))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29 8)))))))))))) (let ((.cse24 (store (store (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse18 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse24) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse20 (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse23 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| .cse18))) (store .cse23 .cse7 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse23) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse19 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse18 .cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse18 .cse19))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))))) .cse13)))) (or .cse32 (= (+ .cse14 .cse15) .cse13)) (not (<= c_~N~0 0)) (or .cse32 .cse33 .cse1 (= (let ((.cse40 (store (store .cse16 |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse35 (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse39 (store .cse40 |c_ULTIMATE.start_main_~a~0#1.offset| .cse37))) (store .cse39 .cse7 (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse36 (select .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse34 (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse34 .cse37))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse37)))))) .cse13)) (or .cse0 (= .cse12 .cse13)) (or .cse0 .cse1 .cse2 (forall ((|v_ULTIMATE.start_main_~i~0#1_79| Int)) (or (not (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 2) c_~N~0) (= (let ((.cse45 (let ((.cse53 (store .cse54 .cse17 1))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53))) (store .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse49 (select .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse52 (* |v_ULTIMATE.start_main_~i~0#1_79| 8))) (let ((.cse50 (select .cse53 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse52))) (.cse51 (select .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse50 .cse51 (select (select (store .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse50 .cse51))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse52 8)))))))))))) (let ((.cse47 (store (store (select .cse45 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse44 (select (select (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| .cse47) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse42 (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse46 (store .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| .cse44))) (store .cse46 .cse7 (select (select (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse43 (select .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse41 (select .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse41 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse44))))))) .cse13)))) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (< (+ |ULTIMATE.start_main_~i~0#1| 2) c_~N~0) (= (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse63 (* |ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse62 (select .cse54 (+ .cse63 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse14 .cse62 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse62))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse63 |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))))) (let ((.cse61 (store (store (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse55 (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse61) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse56 (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse60 (store .cse61 |c_ULTIMATE.start_main_~a~0#1.offset| .cse55))) (store .cse60 .cse7 (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse58 (select .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse55 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse55 .cse58))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse58))))))) .cse13) (not (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0)))) .cse1) (or .cse1 (= (let ((.cse69 (store (store .cse54 |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse65 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse69) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse66 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse68 (store .cse69 |c_ULTIMATE.start_main_~a~0#1.offset| .cse65))) (store .cse68 .cse7 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse67 (select .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse64 (select .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse64 .cse65 (select (select (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse64 .cse65))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))))))) .cse13)) (or .cse32 .cse33 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_79| Int)) (or (= (let ((.cse74 (let ((.cse77 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31))) (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse78 (select .cse77 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse81 (* |v_ULTIMATE.start_main_~i~0#1_79| 8))) (let ((.cse79 (select .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse80 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse81)))) (+ .cse79 (select (select (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse78 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse79 .cse80))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse81 8)) .cse80))))))))) (let ((.cse76 (store (store (select .cse74 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse7 0))) (let ((.cse70 (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse71 (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse75 (store .cse76 |c_ULTIMATE.start_main_~a~0#1.offset| .cse70))) (store .cse75 .cse7 (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse72 (select .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse73 (select .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse70 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse70 .cse73))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse73))))))) .cse13) (not (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 2) c_~N~0)))))))))) is different from true [2023-02-15 19:18:03,480 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse63 (* |c_ULTIMATE.start_main_~i~0#1| 8)) (.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse40 (< 1 c_~N~0)) (.cse22 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse24 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse63 8))) (let ((.cse25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse63)) (.cse21 (+ .cse22 (select .cse9 .cse24))) (.cse11 (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (.cse12 (< (+ |c_ULTIMATE.start_main_~i~0#1| 2) c_~N~0)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse10 (+ c_~N~0 (* c_~N~0 c_~N~0))) (.cse0 (not .cse40)) (.cse1 (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (and (or .cse0 .cse1 (= (let ((.cse8 (store (store .cse9 |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (store .cse8 |c_ULTIMATE.start_main_~a~0#1.offset| .cse3))) (store .cse7 .cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))) .cse10)) (or .cse11 .cse0 .cse12 (= (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse21)))) (let ((.cse19 (store (store (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0))) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| .cse13))) (store .cse18 .cse6 (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse16))))))) .cse10)) (or .cse11 (= (let ((.cse23 (select .cse9 .cse25))) (+ .cse22 .cse23 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse23 .cse22))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) .cse10)) (or .cse11 .cse0 .cse12 (forall ((|v_ULTIMATE.start_main_~i~0#1_79| Int)) (or (not (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 2) c_~N~0) (= (let ((.cse30 (let ((.cse38 (store (store .cse9 .cse25 1) .cse24 1))) (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse38))) (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse37 (* |v_ULTIMATE.start_main_~i~0#1_79| 8))) (let ((.cse35 (select .cse38 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37))) (.cse36 (select .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse35 .cse36 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse35 .cse36))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37 8)))))))))))) (let ((.cse32 (store (store (select .cse30 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0))) (let ((.cse26 (select (select (store .cse30 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse28 (store .cse30 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse31 (store .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| .cse26))) (store .cse31 .cse6 (select (select (store .cse30 |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse27 (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse26 .cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse26 .cse27))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) .cse10)))) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse39 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse39 0) 2) (= (+ (select .cse39 8) 4) .cse22)))) .cse40 (= 0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (or .cse11 (= .cse21 .cse10)) (or .cse11 .cse0 .cse12 (forall ((|v_ULTIMATE.start_main_~i~0#1_79| Int)) (or (not (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_79| 2) c_~N~0) (= (let ((.cse45 (let ((.cse53 (store .cse9 .cse24 1))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53))) (store .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse49 (select .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse52 (* |v_ULTIMATE.start_main_~i~0#1_79| 8))) (let ((.cse50 (select .cse53 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse52))) (.cse51 (select .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse50 .cse51 (select (select (store .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse50 .cse51))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse52 8)))))))))))) (let ((.cse47 (store (store (select .cse45 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0))) (let ((.cse44 (select (select (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| .cse47) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse42 (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse46 (store .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| .cse44))) (store .cse46 .cse6 (select (select (store .cse45 |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse43 (select .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse41 (select .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse41 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse44))))))) .cse10)))) (= .cse22 6) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (< (+ |ULTIMATE.start_main_~i~0#1| 2) c_~N~0) (= (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse62 (* |ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse61 (select .cse9 (+ .cse62 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse22 .cse61 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse61))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse62 |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))))) (let ((.cse60 (store (store (select .cse58 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0))) (let ((.cse54 (select (select (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse55 (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse59 (store .cse60 |c_ULTIMATE.start_main_~a~0#1.offset| .cse54))) (store .cse59 .cse6 (select (select (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| .cse59) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse56 (select .cse55 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse54 .cse57))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse57))))))) .cse10) (not (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0)))) .cse0 .cse1) (<= c_~N~0 2))))) is different from true [2023-02-15 19:18:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:18:14,387 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2023-02-15 19:18:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-15 19:18:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-15 19:18:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:18:14,389 INFO L225 Difference]: With dead ends: 98 [2023-02-15 19:18:14,389 INFO L226 Difference]: Without dead ends: 86 [2023-02-15 19:18:14,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 68.5s TimeCoverageRelationStatistics Valid=796, Invalid=5372, Unknown=2, NotChecked=310, Total=6480 [2023-02-15 19:18:14,392 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-02-15 19:18:14,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 121 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1151 Invalid, 0 Unknown, 20 Unchecked, 6.7s Time] [2023-02-15 19:18:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-15 19:18:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2023-02-15 19:18:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2023-02-15 19:18:14,408 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 37 [2023-02-15 19:18:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:18:14,408 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2023-02-15 19:18:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2023-02-15 19:18:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 19:18:14,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:18:14,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:18:14,414 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 19:18:14,610 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 19:18:14,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:18:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:18:14,611 INFO L85 PathProgramCache]: Analyzing trace with hash 315045318, now seen corresponding path program 5 times [2023-02-15 19:18:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:18:14,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777120964] [2023-02-15 19:18:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:18:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:18:14,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:18:14,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279904033] [2023-02-15 19:18:14,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 19:18:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:18:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:18:14,650 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 19:18:14,652 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 19:18:14,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 19:18:14,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:18:14,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 19:18:14,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:18:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 19:18:14,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:18:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 19:18:14,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:18:14,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777120964] [2023-02-15 19:18:14,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:18:14,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279904033] [2023-02-15 19:18:14,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279904033] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:18:14,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:18:14,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 19:18:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790102345] [2023-02-15 19:18:14,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:18:14,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 19:18:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:18:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 19:18:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 19:18:14,934 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:18:15,265 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2023-02-15 19:18:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 19:18:15,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-15 19:18:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:18:15,266 INFO L225 Difference]: With dead ends: 116 [2023-02-15 19:18:15,267 INFO L226 Difference]: Without dead ends: 89 [2023-02-15 19:18:15,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-15 19:18:15,268 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:18:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 31 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:18:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-15 19:18:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2023-02-15 19:18:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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 19:18:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2023-02-15 19:18:15,288 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 39 [2023-02-15 19:18:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:18:15,288 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2023-02-15 19:18:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2023-02-15 19:18:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 19:18:15,289 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:18:15,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:18:15,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 19:18:15,495 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 19:18:15,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:18:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:18:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1301618760, now seen corresponding path program 6 times [2023-02-15 19:18:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:18:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991239766] [2023-02-15 19:18:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:18:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:18:15,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:18:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567399621] [2023-02-15 19:18:15,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 19:18:15,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:18:15,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:18:15,530 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 19:18:15,536 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 19:18:15,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-15 19:18:15,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:18:15,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 19:18:15,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:18:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 19:18:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:18:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 19:18:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:18:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991239766] [2023-02-15 19:18:15,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:18:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567399621] [2023-02-15 19:18:15,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567399621] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:18:15,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:18:15,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 19:18:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853499849] [2023-02-15 19:18:15,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:18:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 19:18:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:18:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 19:18:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 19:18:15,748 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 19:18:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:18:15,940 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2023-02-15 19:18:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 19:18:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 41 [2023-02-15 19:18:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:18:15,941 INFO L225 Difference]: With dead ends: 112 [2023-02-15 19:18:15,941 INFO L226 Difference]: Without dead ends: 53 [2023-02-15 19:18:15,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-02-15 19:18:15,942 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:18:15,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 34 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:18:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-15 19:18:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2023-02-15 19:18:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:18:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2023-02-15 19:18:15,955 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 41 [2023-02-15 19:18:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:18:15,956 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2023-02-15 19:18:15,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 19:18:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2023-02-15 19:18:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 19:18:15,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:18:15,957 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:18:15,964 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 19:18:16,162 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 19:18:16,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:18:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:18:16,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1373102066, now seen corresponding path program 7 times [2023-02-15 19:18:16,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:18:16,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832492031] [2023-02-15 19:18:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:18:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:18:16,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 19:18:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063008893] [2023-02-15 19:18:16,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 19:18:16,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:18:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:18:16,185 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 19:18:16,195 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 19:18:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:18:16,288 WARN L261 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 111 conjunts are in the unsatisfiable core [2023-02-15 19:18:16,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:18:16,298 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 19:18:16,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:18:16,323 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 23 treesize of output 22 [2023-02-15 19:18:16,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-02-15 19:18:16,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2023-02-15 19:18:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:16,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2023-02-15 19:18:16,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,658 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:16,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2023-02-15 19:18:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2023-02-15 19:18:16,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,874 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:16,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 49 [2023-02-15 19:18:16,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:16,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:16,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-02-15 19:18:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2023-02-15 19:18:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:17,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2023-02-15 19:18:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:17,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 49 [2023-02-15 19:18:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2023-02-15 19:18:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:17,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2023-02-15 19:18:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:18:17,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:18:17,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 51 [2023-02-15 19:18:17,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 46 [2023-02-15 19:18:18,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 40 [2023-02-15 19:18:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:18:18,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:21:16,508 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (< (+ |c_ULTIMATE.start_main_~i~0#1| 3) ~N~0) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 2) ~N~0)) (= (let ((.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (let ((.cse7 (let ((.cse16 (let ((.cse17 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17) 1) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17 8) 1) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17 16) 1)))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse15 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse14 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (+ .cse13 .cse14 .cse15 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))))))) (let ((.cse10 (store (store (store (select .cse7 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse6 0) .cse5 0))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse8 (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| .cse4))) (store .cse9 .cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse8 .cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse4))))))))) (+ ~N~0 (* ~N~0 ~N~0))))) is different from false [2023-02-15 19:21:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-15 19:21:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:21:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832492031] [2023-02-15 19:21:16,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 19:21:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063008893] [2023-02-15 19:21:16,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063008893] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:21:16,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:21:16,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2023-02-15 19:21:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874858019] [2023-02-15 19:21:16,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:21:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-02-15 19:21:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:21:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-02-15 19:21:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=4116, Unknown=18, NotChecked=130, Total=4556 [2023-02-15 19:21:16,577 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 68 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 68 states have internal predecessors, (89), 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)