./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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-programs/partial_mod_count_limited_base.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 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 09:54:30,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 09:54:30,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 09:54:30,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 09:54:30,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 09:54:30,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 09:54:30,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 09:54:30,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 09:54:30,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 09:54:30,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 09:54:30,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 09:54:30,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 09:54:30,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 09:54:30,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 09:54:30,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 09:54:30,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 09:54:30,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 09:54:30,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 09:54:30,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 09:54:30,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 09:54:30,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 09:54:30,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 09:54:30,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 09:54:30,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 09:54:30,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 09:54:30,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 09:54:30,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 09:54:30,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 09:54:30,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 09:54:30,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 09:54:30,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 09:54:30,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 09:54:30,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 09:54:30,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 09:54:30,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 09:54:30,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 09:54:30,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 09:54:30,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 09:54:30,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 09:54:30,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 09:54:30,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 09:54:30,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 09:54:30,743 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 09:54:30,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 09:54:30,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 09:54:30,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 09:54:30,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 09:54:30,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 09:54:30,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 09:54:30,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 09:54:30,745 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 09:54:30,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 09:54:30,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 09:54:30,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 09:54:30,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 09:54:30,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 09:54:30,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 09:54:30,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 09:54:30,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 09:54:30,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 09:54:30,749 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 09:54:30,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 [2023-02-14 09:54:30,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 09:54:31,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 09:54:31,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 09:54:31,008 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 09:54:31,009 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 09:54:31,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2023-02-14 09:54:32,047 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 09:54:32,188 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 09:54:32,188 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2023-02-14 09:54:32,192 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5305db7/2e516eff4c8a483b86e752254ca1661f/FLAG0e3d15e42 [2023-02-14 09:54:32,203 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5305db7/2e516eff4c8a483b86e752254ca1661f [2023-02-14 09:54:32,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 09:54:32,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 09:54:32,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 09:54:32,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 09:54:32,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 09:54:32,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476546a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32, skipping insertion in model container [2023-02-14 09:54:32,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 09:54:32,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 09:54:32,359 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-programs/partial_mod_count_limited_base.c[334,347] [2023-02-14 09:54:32,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 09:54:32,415 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 09:54:32,425 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-programs/partial_mod_count_limited_base.c[334,347] [2023-02-14 09:54:32,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 09:54:32,445 INFO L208 MainTranslator]: Completed translation [2023-02-14 09:54:32,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32 WrapperNode [2023-02-14 09:54:32,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 09:54:32,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 09:54:32,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 09:54:32,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 09:54:32,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,472 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-02-14 09:54:32,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 09:54:32,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 09:54:32,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 09:54:32,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 09:54:32,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,488 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 09:54:32,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 09:54:32,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 09:54:32,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 09:54:32,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (1/1) ... [2023-02-14 09:54:32,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 09:54:32,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:32,519 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) [2023-02-14 09:54:32,521 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 [2023-02-14 09:54:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 09:54:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 09:54:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 09:54:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 09:54:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 09:54:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 09:54:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 09:54:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 09:54:32,600 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 09:54:32,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 09:54:32,742 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 09:54:32,746 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 09:54:32,747 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 09:54:32,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:54:32 BoogieIcfgContainer [2023-02-14 09:54:32,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 09:54:32,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 09:54:32,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 09:54:32,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 09:54:32,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:54:32" (1/3) ... [2023-02-14 09:54:32,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:54:32, skipping insertion in model container [2023-02-14 09:54:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:54:32" (2/3) ... [2023-02-14 09:54:32,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b91b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:54:32, skipping insertion in model container [2023-02-14 09:54:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:54:32" (3/3) ... [2023-02-14 09:54:32,768 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2023-02-14 09:54:32,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 09:54:32,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 09:54:32,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 09:54:32,854 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;@75a7c92b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 09:54:32,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 09:54:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 09:54:32,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:32,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:32,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2023-02-14 09:54:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:32,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55917231] [2023-02-14 09:54:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:32,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 09:54:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55917231] [2023-02-14 09:54:33,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55917231] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:33,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 09:54:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93388140] [2023-02-14 09:54:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 09:54:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 09:54:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 09:54:33,080 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-02-14 09:54:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:33,093 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-14 09:54:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 09:54:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2023-02-14 09:54:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:33,101 INFO L225 Difference]: With dead ends: 41 [2023-02-14 09:54:33,101 INFO L226 Difference]: Without dead ends: 18 [2023-02-14 09:54:33,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 09:54:33,108 INFO L413 NwaCegarLoop]: 26 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, 26 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 [2023-02-14 09:54:33,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-14 09:54:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-14 09:54:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2023-02-14 09:54:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-14 09:54:33,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2023-02-14 09:54:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:33,129 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-14 09:54:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-02-14 09:54:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-14 09:54:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 09:54:33,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:33,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 09:54:33,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2023-02-14 09:54:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:33,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969519599] [2023-02-14 09:54:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 09:54:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969519599] [2023-02-14 09:54:33,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969519599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:33,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:33,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 09:54:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917249927] [2023-02-14 09:54:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:33,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 09:54:33,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 09:54:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 09:54:33,250 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-14 09:54:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:33,297 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-02-14 09:54:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 09:54:33,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-02-14 09:54:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:33,299 INFO L225 Difference]: With dead ends: 45 [2023-02-14 09:54:33,299 INFO L226 Difference]: Without dead ends: 31 [2023-02-14 09:54:33,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 09:54:33,300 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:33,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-14 09:54:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2023-02-14 09:54:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-02-14 09:54:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-14 09:54:33,304 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2023-02-14 09:54:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:33,304 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-14 09:54:33,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-14 09:54:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-14 09:54:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 09:54:33,305 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:33,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:33,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 09:54:33,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:33,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1485448361, now seen corresponding path program 1 times [2023-02-14 09:54:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:33,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020976001] [2023-02-14 09:54:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 09:54:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020976001] [2023-02-14 09:54:33,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020976001] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:33,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:33,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 09:54:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780847851] [2023-02-14 09:54:33,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 09:54:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 09:54:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 09:54:33,559 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:33,646 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2023-02-14 09:54:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 09:54:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 09:54:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:33,648 INFO L225 Difference]: With dead ends: 45 [2023-02-14 09:54:33,649 INFO L226 Difference]: Without dead ends: 31 [2023-02-14 09:54:33,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-02-14 09:54:33,651 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:33,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 45 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 09:54:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-14 09:54:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2023-02-14 09:54:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-14 09:54:33,656 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2023-02-14 09:54:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:33,656 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-14 09:54:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-14 09:54:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 09:54:33,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:33,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 09:54:33,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2129460565, now seen corresponding path program 1 times [2023-02-14 09:54:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:33,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233457894] [2023-02-14 09:54:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 09:54:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233457894] [2023-02-14 09:54:33,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233457894] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:33,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:33,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 09:54:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50955117] [2023-02-14 09:54:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:33,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 09:54:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 09:54:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 09:54:33,727 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:33,743 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-02-14 09:54:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 09:54:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 09:54:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:33,744 INFO L225 Difference]: With dead ends: 34 [2023-02-14 09:54:33,744 INFO L226 Difference]: Without dead ends: 32 [2023-02-14 09:54:33,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 09:54:33,746 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:33,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 45 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-14 09:54:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-02-14 09:54:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2023-02-14 09:54:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-02-14 09:54:33,750 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2023-02-14 09:54:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:33,751 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-02-14 09:54:33,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-02-14 09:54:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 09:54:33,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:33,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:33,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 09:54:33,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2129520147, now seen corresponding path program 1 times [2023-02-14 09:54:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:33,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465102759] [2023-02-14 09:54:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 09:54:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465102759] [2023-02-14 09:54:33,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465102759] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:33,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:33,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 09:54:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857524651] [2023-02-14 09:54:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:33,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 09:54:33,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 09:54:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 09:54:33,810 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:33,833 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-02-14 09:54:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 09:54:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 09:54:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:33,834 INFO L225 Difference]: With dead ends: 40 [2023-02-14 09:54:33,834 INFO L226 Difference]: Without dead ends: 38 [2023-02-14 09:54:33,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-14 09:54:33,835 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:33,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 52 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-14 09:54:33,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2023-02-14 09:54:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2023-02-14 09:54:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-14 09:54:33,840 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2023-02-14 09:54:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:33,840 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-14 09:54:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-14 09:54:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 09:54:33,841 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:33,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 09:54:33,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -593145504, now seen corresponding path program 1 times [2023-02-14 09:54:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873313642] [2023-02-14 09:54:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:33,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873313642] [2023-02-14 09:54:33,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873313642] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:54:33,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792602642] [2023-02-14 09:54:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:33,891 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) [2023-02-14 09:54:33,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 09:54:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:33,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 09:54:33,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:33,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:34,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792602642] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:34,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:54:34,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-02-14 09:54:34,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697163435] [2023-02-14 09:54:34,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:34,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 09:54:34,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 09:54:34,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-14 09:54:34,019 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:34,076 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2023-02-14 09:54:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 09:54:34,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-14 09:54:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:34,077 INFO L225 Difference]: With dead ends: 123 [2023-02-14 09:54:34,077 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 09:54:34,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-14 09:54:34,078 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:34,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 41 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 09:54:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2023-02-14 09:54:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 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) [2023-02-14 09:54:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-14 09:54:34,084 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 22 [2023-02-14 09:54:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:34,084 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-14 09:54:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-14 09:54:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 09:54:34,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:34,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:34,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 09:54:34,290 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,SelfDestructingSolverStorable5 [2023-02-14 09:54:34,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1836734985, now seen corresponding path program 1 times [2023-02-14 09:54:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:34,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636973501] [2023-02-14 09:54:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:34,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 09:54:34,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186165586] [2023-02-14 09:54:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:34,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:34,312 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) [2023-02-14 09:54:34,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 09:54:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:34,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 09:54:34,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 09:54:34,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 09:54:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636973501] [2023-02-14 09:54:34,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 09:54:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186165586] [2023-02-14 09:54:34,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186165586] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:34,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:34,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 09:54:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13253796] [2023-02-14 09:54:34,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:34,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 09:54:34,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:34,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 09:54:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 09:54:34,465 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:34,476 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2023-02-14 09:54:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 09:54:34,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-14 09:54:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:34,479 INFO L225 Difference]: With dead ends: 109 [2023-02-14 09:54:34,479 INFO L226 Difference]: Without dead ends: 79 [2023-02-14 09:54:34,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 09:54:34,480 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:34,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-14 09:54:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58. [2023-02-14 09:54:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 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) [2023-02-14 09:54:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-02-14 09:54:34,494 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 37 [2023-02-14 09:54:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:34,494 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-02-14 09:54:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 09:54:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-02-14 09:54:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 09:54:34,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:34,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:34,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 09:54:34,701 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,SelfDestructingSolverStorable6 [2023-02-14 09:54:34,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash 467241801, now seen corresponding path program 1 times [2023-02-14 09:54:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846205991] [2023-02-14 09:54:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 09:54:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846205991] [2023-02-14 09:54:34,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846205991] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:54:34,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643087147] [2023-02-14 09:54:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:34,822 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) [2023-02-14 09:54:34,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 09:54:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:34,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 09:54:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:35,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643087147] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:35,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:54:35,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-02-14 09:54:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883482066] [2023-02-14 09:54:35,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 09:54:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 09:54:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-02-14 09:54:35,058 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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) [2023-02-14 09:54:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:35,387 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2023-02-14 09:54:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 09:54:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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 [2023-02-14 09:54:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:35,389 INFO L225 Difference]: With dead ends: 346 [2023-02-14 09:54:35,389 INFO L226 Difference]: Without dead ends: 304 [2023-02-14 09:54:35,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=779, Unknown=0, NotChecked=0, Total=1190 [2023-02-14 09:54:35,390 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 378 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 141 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 09:54:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-02-14 09:54:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 113. [2023-02-14 09:54:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 112 states have internal predecessors, (138), 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) [2023-02-14 09:54:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 138 transitions. [2023-02-14 09:54:35,418 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 138 transitions. Word has length 37 [2023-02-14 09:54:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:35,418 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 138 transitions. [2023-02-14 09:54:35,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 18 states have internal predecessors, (78), 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) [2023-02-14 09:54:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 138 transitions. [2023-02-14 09:54:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 09:54:35,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:35,423 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:35,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 09:54:35,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:35,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1314879253, now seen corresponding path program 2 times [2023-02-14 09:54:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352848251] [2023-02-14 09:54:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-14 09:54:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:35,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352848251] [2023-02-14 09:54:35,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352848251] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:54:35,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:54:35,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-14 09:54:35,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359293948] [2023-02-14 09:54:35,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:54:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 09:54:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 09:54:35,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-14 09:54:35,917 INFO L87 Difference]: Start difference. First operand 113 states and 138 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-02-14 09:54:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:35,985 INFO L93 Difference]: Finished difference Result 235 states and 283 transitions. [2023-02-14 09:54:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 09:54:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 67 [2023-02-14 09:54:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:35,987 INFO L225 Difference]: With dead ends: 235 [2023-02-14 09:54:35,987 INFO L226 Difference]: Without dead ends: 182 [2023-02-14 09:54:35,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-02-14 09:54:35,989 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:35,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:54:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-02-14 09:54:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 155. [2023-02-14 09:54:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 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) [2023-02-14 09:54:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2023-02-14 09:54:36,001 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 67 [2023-02-14 09:54:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:36,002 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2023-02-14 09:54:36,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-02-14 09:54:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2023-02-14 09:54:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 09:54:36,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:36,004 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:36,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 09:54:36,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1890253811, now seen corresponding path program 3 times [2023-02-14 09:54:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:36,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689436672] [2023-02-14 09:54:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-02-14 09:54:36,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:36,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689436672] [2023-02-14 09:54:36,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689436672] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:54:36,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279338748] [2023-02-14 09:54:36,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 09:54:36,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:36,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:36,241 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) [2023-02-14 09:54:36,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 09:54:36,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-14 09:54:36,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:54:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 09:54:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:36,446 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-14 09:54:36,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-02-14 09:54:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-02-14 09:54:36,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-02-14 09:54:36,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279338748] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:36,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:54:36,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-02-14 09:54:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844361606] [2023-02-14 09:54:36,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:36,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-14 09:54:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-14 09:54:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-02-14 09:54:36,661 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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) [2023-02-14 09:54:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:36,981 INFO L93 Difference]: Finished difference Result 278 states and 325 transitions. [2023-02-14 09:54:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 09:54:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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 67 [2023-02-14 09:54:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:36,982 INFO L225 Difference]: With dead ends: 278 [2023-02-14 09:54:36,982 INFO L226 Difference]: Without dead ends: 188 [2023-02-14 09:54:36,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 09:54:36,983 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 222 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:36,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 137 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 09:54:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-14 09:54:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2023-02-14 09:54:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 107 states have internal predecessors, (123), 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) [2023-02-14 09:54:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2023-02-14 09:54:36,988 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 67 [2023-02-14 09:54:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:36,988 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2023-02-14 09:54:36,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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) [2023-02-14 09:54:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2023-02-14 09:54:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 09:54:36,989 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:36,989 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:37,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 09:54:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:37,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash -573175961, now seen corresponding path program 2 times [2023-02-14 09:54:37,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:37,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186554844] [2023-02-14 09:54:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:37,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:37,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 09:54:37,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558381982] [2023-02-14 09:54:37,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 09:54:37,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:37,208 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) [2023-02-14 09:54:37,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 09:54:37,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 09:54:37,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:54:37,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 09:54:37,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:37,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186554844] [2023-02-14 09:54:37,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 09:54:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558381982] [2023-02-14 09:54:37,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558381982] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:37,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 09:54:37,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-14 09:54:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740197002] [2023-02-14 09:54:37,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 09:54:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 09:54:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-02-14 09:54:37,686 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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) [2023-02-14 09:54:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:38,053 INFO L93 Difference]: Finished difference Result 696 states and 825 transitions. [2023-02-14 09:54:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-14 09:54:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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 67 [2023-02-14 09:54:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:38,055 INFO L225 Difference]: With dead ends: 696 [2023-02-14 09:54:38,055 INFO L226 Difference]: Without dead ends: 621 [2023-02-14 09:54:38,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 09:54:38,056 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 976 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:38,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 195 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 09:54:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-02-14 09:54:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 210. [2023-02-14 09:54:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 209 states have internal predecessors, (237), 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) [2023-02-14 09:54:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2023-02-14 09:54:38,065 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 67 [2023-02-14 09:54:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:38,065 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2023-02-14 09:54:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 25 states have internal predecessors, (119), 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) [2023-02-14 09:54:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2023-02-14 09:54:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-02-14 09:54:38,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:38,066 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:38,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 09:54:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-14 09:54:38,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash -314647257, now seen corresponding path program 3 times [2023-02-14 09:54:38,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:38,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660348541] [2023-02-14 09:54:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:38,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:38,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 09:54:38,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765054073] [2023-02-14 09:54:38,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 09:54:38,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:38,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:38,292 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) [2023-02-14 09:54:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 09:54:38,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-02-14 09:54:38,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:54:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 09:54:38,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 613 proven. 319 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-02-14 09:54:38,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-02-14 09:54:39,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:39,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660348541] [2023-02-14 09:54:39,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 09:54:39,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765054073] [2023-02-14 09:54:39,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765054073] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:39,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 09:54:39,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-02-14 09:54:39,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312184918] [2023-02-14 09:54:39,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:39,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 09:54:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 09:54:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=594, Unknown=0, NotChecked=0, Total=992 [2023-02-14 09:54:39,224 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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) [2023-02-14 09:54:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:40,717 INFO L93 Difference]: Finished difference Result 1882 states and 2267 transitions. [2023-02-14 09:54:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-02-14 09:54:40,717 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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 127 [2023-02-14 09:54:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:40,723 INFO L225 Difference]: With dead ends: 1882 [2023-02-14 09:54:40,723 INFO L226 Difference]: Without dead ends: 1861 [2023-02-14 09:54:40,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3082, Invalid=5474, Unknown=0, NotChecked=0, Total=8556 [2023-02-14 09:54:40,726 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1104 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:40,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 255 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 09:54:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-02-14 09:54:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 432. [2023-02-14 09:54:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.1809744779582367) internal successors, (509), 431 states have internal predecessors, (509), 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) [2023-02-14 09:54:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 509 transitions. [2023-02-14 09:54:40,751 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 509 transitions. Word has length 127 [2023-02-14 09:54:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:40,752 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 509 transitions. [2023-02-14 09:54:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.59375) internal successors, (147), 31 states have internal predecessors, (147), 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) [2023-02-14 09:54:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 509 transitions. [2023-02-14 09:54:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-02-14 09:54:40,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:40,753 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:40,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-14 09:54:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:40,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1490439733, now seen corresponding path program 2 times [2023-02-14 09:54:40,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:40,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010505501] [2023-02-14 09:54:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:40,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:54:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:41,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010505501] [2023-02-14 09:54:41,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010505501] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:54:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923201470] [2023-02-14 09:54:41,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 09:54:41,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:41,754 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) [2023-02-14 09:54:41,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 09:54:41,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 09:54:41,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:54:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-14 09:54:41,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:42,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923201470] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:43,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:54:43,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 78 [2023-02-14 09:54:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775747931] [2023-02-14 09:54:43,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-02-14 09:54:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-02-14 09:54:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=3455, Unknown=0, NotChecked=0, Total=6162 [2023-02-14 09:54:43,220 INFO L87 Difference]: Start difference. First operand 432 states and 509 transitions. Second operand has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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) [2023-02-14 09:54:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:44,949 INFO L93 Difference]: Finished difference Result 6229 states and 7420 transitions. [2023-02-14 09:54:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-14 09:54:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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 137 [2023-02-14 09:54:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:44,964 INFO L225 Difference]: With dead ends: 6229 [2023-02-14 09:54:44,965 INFO L226 Difference]: Without dead ends: 5853 [2023-02-14 09:54:44,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4082, Invalid=6630, Unknown=0, NotChecked=0, Total=10712 [2023-02-14 09:54:44,969 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2672 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:44,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 560 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 09:54:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2023-02-14 09:54:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 587. [2023-02-14 09:54:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.18259385665529) internal successors, (693), 586 states have internal predecessors, (693), 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) [2023-02-14 09:54:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 693 transitions. [2023-02-14 09:54:45,026 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 693 transitions. Word has length 137 [2023-02-14 09:54:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:45,026 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 693 transitions. [2023-02-14 09:54:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.822784810126582) internal successors, (381), 78 states have internal predecessors, (381), 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) [2023-02-14 09:54:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 693 transitions. [2023-02-14 09:54:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-02-14 09:54:45,028 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:45,028 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:45,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-14 09:54:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:45,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:45,234 INFO L85 PathProgramCache]: Analyzing trace with hash -214224921, now seen corresponding path program 4 times [2023-02-14 09:54:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:45,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290275634] [2023-02-14 09:54:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:45,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:45,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 09:54:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865918879] [2023-02-14 09:54:45,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 09:54:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:45,270 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) [2023-02-14 09:54:45,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 09:54:46,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 09:54:46,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:54:46,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-14 09:54:46,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:54:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:48,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:54:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 09:54:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:54:50,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290275634] [2023-02-14 09:54:50,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 09:54:50,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865918879] [2023-02-14 09:54:50,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865918879] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:54:50,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 09:54:50,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2023-02-14 09:54:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485726165] [2023-02-14 09:54:50,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 09:54:50,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-02-14 09:54:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:54:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-02-14 09:54:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5463, Invalid=5667, Unknown=0, NotChecked=0, Total=11130 [2023-02-14 09:54:50,033 INFO L87 Difference]: Start difference. First operand 587 states and 693 transitions. Second operand has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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) [2023-02-14 09:54:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:54:57,611 INFO L93 Difference]: Finished difference Result 16704 states and 20014 transitions. [2023-02-14 09:54:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-02-14 09:54:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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 267 [2023-02-14 09:54:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:54:57,647 INFO L225 Difference]: With dead ends: 16704 [2023-02-14 09:54:57,648 INFO L226 Difference]: Without dead ends: 16253 [2023-02-14 09:54:57,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5253 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10869, Invalid=13623, Unknown=0, NotChecked=0, Total=24492 [2023-02-14 09:54:57,655 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5162 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 09:54:57,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5162 Valid, 882 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 09:54:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16253 states. [2023-02-14 09:54:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16253 to 1029. [2023-02-14 09:54:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.154669260700389) internal successors, (1187), 1028 states have internal predecessors, (1187), 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) [2023-02-14 09:54:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1187 transitions. [2023-02-14 09:54:57,984 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1187 transitions. Word has length 267 [2023-02-14 09:54:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:54:57,984 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1187 transitions. [2023-02-14 09:54:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 4.89622641509434) internal successors, (519), 105 states have internal predecessors, (519), 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) [2023-02-14 09:54:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1187 transitions. [2023-02-14 09:54:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-02-14 09:54:57,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:54:57,990 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 101, 101, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:54:58,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 09:54:58,200 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,SelfDestructingSolverStorable13 [2023-02-14 09:54:58,200 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:54:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:54:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 253570599, now seen corresponding path program 5 times [2023-02-14 09:54:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:54:58,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690193523] [2023-02-14 09:54:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:54:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:54:58,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 09:54:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381476541] [2023-02-14 09:54:58,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 09:54:58,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:54:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:54:58,269 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) [2023-02-14 09:54:58,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process