./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.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 05dbf98a57cbdf117305bcdd9c3dde8d1b2284b890adec5d1f5924f0e5e4bbbb --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:47:39,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:47:39,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:47:39,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:47:39,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:47:39,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:47:39,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:47:39,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:47:39,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:47:39,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:47:39,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:47:39,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:47:39,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:47:39,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:47:39,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:47:39,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:47:39,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:47:39,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:47:39,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:47:39,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:47:39,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:47:39,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:47:39,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:47:39,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:47:39,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:47:39,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:47:39,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:47:39,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:47:39,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:47:39,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:47:39,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:47:39,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:47:39,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:47:39,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:47:39,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:47:39,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:47:39,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:47:39,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:47:39,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:47:39,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:47:39,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:47:39,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:47:39,846 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:47:39,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:47:39,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:47:39,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:47:39,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:47:39,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:47:39,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:47:39,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:47:39,849 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:47:39,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:47:39,850 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:47:39,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:47:39,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:47:39,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:47:39,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:47:39,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:47:39,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:47:39,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:47:39,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:47:39,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:47:39,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:47:39,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:47:39,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:47:39,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:47:39,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:47:39,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:47:39,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:47:39,854 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:47:39,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:47:39,854 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:47:39,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05dbf98a57cbdf117305bcdd9c3dde8d1b2284b890adec5d1f5924f0e5e4bbbb [2023-02-17 01:47:40,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:47:40,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:47:40,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:47:40,066 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:47:40,066 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:47:40,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2023-02-17 01:47:41,060 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:47:41,224 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:47:41,224 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2023-02-17 01:47:41,230 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b484f1e0/4b76a6a8f20e4d30a6d491a50af034f4/FLAGebc19a804 [2023-02-17 01:47:41,244 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b484f1e0/4b76a6a8f20e4d30a6d491a50af034f4 [2023-02-17 01:47:41,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:47:41,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:47:41,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:47:41,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:47:41,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:47:41,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4340d0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41, skipping insertion in model container [2023-02-17 01:47:41,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:47:41,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:47:41,371 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/nla-digbench-scaling/egcd3-ll_valuebound50.c[490,503] [2023-02-17 01:47:41,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:47:41,389 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:47:41,397 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/nla-digbench-scaling/egcd3-ll_valuebound50.c[490,503] [2023-02-17 01:47:41,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:47:41,411 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:47:41,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41 WrapperNode [2023-02-17 01:47:41,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:47:41,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:47:41,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:47:41,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:47:41,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,432 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-02-17 01:47:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:47:41,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:47:41,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:47:41,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:47:41,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:47:41,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:47:41,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:47:41,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:47:41,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (1/1) ... [2023-02-17 01:47:41,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:47:41,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:41,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 01:47:41,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 01:47:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:47:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 01:47:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 01:47:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:47:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:47:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:47:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:47:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:47:41,575 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:47:41,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:47:41,751 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:47:41,756 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:47:41,756 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 01:47:41,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:47:41 BoogieIcfgContainer [2023-02-17 01:47:41,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:47:41,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:47:41,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:47:41,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:47:41,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:47:41" (1/3) ... [2023-02-17 01:47:41,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7af807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:47:41, skipping insertion in model container [2023-02-17 01:47:41,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:47:41" (2/3) ... [2023-02-17 01:47:41,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7af807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:47:41, skipping insertion in model container [2023-02-17 01:47:41,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:47:41" (3/3) ... [2023-02-17 01:47:41,765 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound50.c [2023-02-17 01:47:41,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:47:41,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:47:41,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:47:41,869 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;@ca196b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:47:41,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:47:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 01:47:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 01:47:41,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:41,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:41,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-17 01:47:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:41,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739829667] [2023-02-17 01:47:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739829667] [2023-02-17 01:47:42,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 01:47:42,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187167361] [2023-02-17 01:47:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:42,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:42,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:47:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 01:47:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-17 01:47:42,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:47:42,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187167361] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:47:42,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:47:42,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 01:47:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962958686] [2023-02-17 01:47:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 01:47:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 01:47:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:47:42,151 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:47:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:42,166 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-17 01:47:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 01:47:42,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-17 01:47:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:42,171 INFO L225 Difference]: With dead ends: 67 [2023-02-17 01:47:42,174 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 01:47:42,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:47:42,178 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2023-02-17 01:47:42,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:47:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 01:47:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 01:47:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 01:47:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-17 01:47:42,204 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-17 01:47:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:42,204 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-17 01:47:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:47:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-17 01:47:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 01:47:42,206 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:42,206 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:42,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 01:47:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 01:47:42,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-17 01:47:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:42,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599762882] [2023-02-17 01:47:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:42,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:42,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599516317] [2023-02-17 01:47:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:42,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:42,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:42,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:42,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:47:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:42,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 01:47:42,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 01:47:42,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:47:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599762882] [2023-02-17 01:47:42,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599516317] [2023-02-17 01:47:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599516317] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:47:42,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:47:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 01:47:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512885865] [2023-02-17 01:47:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:47:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:47:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:47:42,578 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:42,659 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-02-17 01:47:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:47:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-17 01:47:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:42,661 INFO L225 Difference]: With dead ends: 50 [2023-02-17 01:47:42,661 INFO L226 Difference]: Without dead ends: 43 [2023-02-17 01:47:42,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:47:42,663 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:42,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-17 01:47:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2023-02-17 01:47:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 01:47:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-17 01:47:42,675 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-17 01:47:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:42,676 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-17 01:47:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-17 01:47:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 01:47:42,677 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:42,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:42,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:42,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 01:47:42,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-17 01:47:42,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:42,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453766431] [2023-02-17 01:47:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:42,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:42,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938150659] [2023-02-17 01:47:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:42,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:42,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:42,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:47:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:42,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 01:47:42,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 01:47:42,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:47:42,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:42,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453766431] [2023-02-17 01:47:42,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:42,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938150659] [2023-02-17 01:47:42,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938150659] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:47:42,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:47:42,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 01:47:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120470381] [2023-02-17 01:47:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 01:47:42,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 01:47:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:47:42,991 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:43,076 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-17 01:47:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 01:47:43,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-02-17 01:47:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:43,077 INFO L225 Difference]: With dead ends: 49 [2023-02-17 01:47:43,077 INFO L226 Difference]: Without dead ends: 47 [2023-02-17 01:47:43,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:47:43,079 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:43,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-17 01:47:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-17 01:47:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 01:47:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-17 01:47:43,087 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-17 01:47:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:43,088 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-17 01:47:43,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-17 01:47:43,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 01:47:43,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:43,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:43,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:43,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:43,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:43,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-17 01:47:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347654118] [2023-02-17 01:47:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:43,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:43,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:43,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020174937] [2023-02-17 01:47:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:43,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:43,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:43,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:43,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:47:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 01:47:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 01:47:43,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 01:47:43,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:43,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347654118] [2023-02-17 01:47:43,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:43,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020174937] [2023-02-17 01:47:43,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020174937] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:47:43,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:47:43,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-17 01:47:43,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734354132] [2023-02-17 01:47:43,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:43,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 01:47:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 01:47:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 01:47:43,459 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:47:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:43,644 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2023-02-17 01:47:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 01:47:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-02-17 01:47:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:43,649 INFO L225 Difference]: With dead ends: 99 [2023-02-17 01:47:43,649 INFO L226 Difference]: Without dead ends: 92 [2023-02-17 01:47:43,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-17 01:47:43,650 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:43,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 242 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-17 01:47:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2023-02-17 01:47:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-17 01:47:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2023-02-17 01:47:43,670 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2023-02-17 01:47:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:43,671 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2023-02-17 01:47:43,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 01:47:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2023-02-17 01:47:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 01:47:43,672 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:43,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:43,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 01:47:43,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:43,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-17 01:47:43,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:43,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81031323] [2023-02-17 01:47:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:43,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:43,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:43,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479106644] [2023-02-17 01:47:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:43,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:43,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:43,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:43,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:47:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:43,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 01:47:43,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:47:44,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:44,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81031323] [2023-02-17 01:47:44,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:44,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479106644] [2023-02-17 01:47:44,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479106644] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:47:44,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:47:44,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-17 01:47:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468786504] [2023-02-17 01:47:44,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:44,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 01:47:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:44,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 01:47:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:47:44,059 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 01:47:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:44,161 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2023-02-17 01:47:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 01:47:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-02-17 01:47:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:44,163 INFO L225 Difference]: With dead ends: 75 [2023-02-17 01:47:44,163 INFO L226 Difference]: Without dead ends: 73 [2023-02-17 01:47:44,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-17 01:47:44,164 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:44,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 145 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-17 01:47:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-02-17 01:47:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-17 01:47:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2023-02-17 01:47:44,177 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2023-02-17 01:47:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:44,178 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2023-02-17 01:47:44,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 01:47:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2023-02-17 01:47:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 01:47:44,179 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:44,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:44,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:44,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:44,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-17 01:47:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:44,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943430445] [2023-02-17 01:47:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:44,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:44,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740181463] [2023-02-17 01:47:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:44,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:44,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:44,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:44,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 01:47:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:44,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 01:47:44,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 01:47:44,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:47:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943430445] [2023-02-17 01:47:44,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740181463] [2023-02-17 01:47:44,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740181463] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:47:44,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:47:44,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-02-17 01:47:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219739002] [2023-02-17 01:47:44,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:44,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 01:47:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 01:47:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-17 01:47:44,602 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 01:47:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:44,773 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-02-17 01:47:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 01:47:44,774 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2023-02-17 01:47:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:44,775 INFO L225 Difference]: With dead ends: 107 [2023-02-17 01:47:44,775 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 01:47:44,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-17 01:47:44,776 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 43 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:44,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 259 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 01:47:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2023-02-17 01:47:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-17 01:47:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2023-02-17 01:47:44,789 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2023-02-17 01:47:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:44,789 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2023-02-17 01:47:44,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 01:47:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2023-02-17 01:47:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 01:47:44,790 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:44,790 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:44,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:44,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:44,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-17 01:47:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:44,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396536766] [2023-02-17 01:47:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:45,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705255578] [2023-02-17 01:47:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:45,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:45,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:45,026 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) [2023-02-17 01:47:45,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 01:47:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:45,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 01:47:45,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 01:47:45,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:47,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396536766] [2023-02-17 01:47:47,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:47,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705255578] [2023-02-17 01:47:47,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705255578] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:47:47,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:47:47,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-17 01:47:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167214270] [2023-02-17 01:47:47,246 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:47,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 01:47:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 01:47:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2023-02-17 01:47:47,247 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 01:47:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:47,516 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2023-02-17 01:47:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 01:47:47,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-17 01:47:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:47,518 INFO L225 Difference]: With dead ends: 114 [2023-02-17 01:47:47,518 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 01:47:47,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=55, Invalid=250, Unknown=1, NotChecked=0, Total=306 [2023-02-17 01:47:47,518 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:47,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 133 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 01:47:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 01:47:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-02-17 01:47:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 76 states have internal predecessors, (94), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-02-17 01:47:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 151 transitions. [2023-02-17 01:47:47,546 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 151 transitions. Word has length 43 [2023-02-17 01:47:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:47,546 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 151 transitions. [2023-02-17 01:47:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 01:47:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 151 transitions. [2023-02-17 01:47:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 01:47:47,547 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:47,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:47,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-17 01:47:47,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:47,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2023-02-17 01:47:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:47,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525524357] [2023-02-17 01:47:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:47,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:47,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956865149] [2023-02-17 01:47:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:47,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:47,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:47,761 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) [2023-02-17 01:47:47,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 01:47:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:47,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-17 01:47:47,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 01:47:47,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:47:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525524357] [2023-02-17 01:47:48,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956865149] [2023-02-17 01:47:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956865149] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:47:48,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:47:48,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2023-02-17 01:47:48,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187583903] [2023-02-17 01:47:48,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-17 01:47:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-17 01:47:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-02-17 01:47:48,069 INFO L87 Difference]: Start difference. First operand 111 states and 151 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-17 01:47:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:52,138 INFO L93 Difference]: Finished difference Result 182 states and 255 transitions. [2023-02-17 01:47:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 01:47:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 43 [2023-02-17 01:47:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:52,141 INFO L225 Difference]: With dead ends: 182 [2023-02-17 01:47:52,141 INFO L226 Difference]: Without dead ends: 180 [2023-02-17 01:47:52,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 01:47:52,142 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 155 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:52,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 201 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-17 01:47:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-17 01:47:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 141. [2023-02-17 01:47:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.2448979591836735) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-02-17 01:47:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2023-02-17 01:47:52,176 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 43 [2023-02-17 01:47:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:52,177 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2023-02-17 01:47:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-17 01:47:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2023-02-17 01:47:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 01:47:52,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:52,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:52,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:52,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-17 01:47:52,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2023-02-17 01:47:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:52,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217111854] [2023-02-17 01:47:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:52,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:52,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916529225] [2023-02-17 01:47:52,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:47:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:52,411 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) [2023-02-17 01:47:52,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 01:47:52,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:47:52,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:47:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 01:47:52,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 01:47:52,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:47:52,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:52,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217111854] [2023-02-17 01:47:52,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:52,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916529225] [2023-02-17 01:47:52,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916529225] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:47:52,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:47:52,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 01:47:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534753782] [2023-02-17 01:47:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:47:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:47:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:47:52,470 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:52,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:52,557 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2023-02-17 01:47:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:47:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-02-17 01:47:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:52,558 INFO L225 Difference]: With dead ends: 195 [2023-02-17 01:47:52,558 INFO L226 Difference]: Without dead ends: 132 [2023-02-17 01:47:52,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-17 01:47:52,559 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 139 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:47:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-17 01:47:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 97. [2023-02-17 01:47:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.171875) internal successors, (75), 67 states have internal predecessors, (75), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-17 01:47:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2023-02-17 01:47:52,574 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 43 [2023-02-17 01:47:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:52,574 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2023-02-17 01:47:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 01:47:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2023-02-17 01:47:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-17 01:47:52,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:52,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:52,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:52,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:52,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2023-02-17 01:47:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:52,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891610626] [2023-02-17 01:47:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:52,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:52,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:52,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651315451] [2023-02-17 01:47:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:52,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:52,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 01:47:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:52,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 01:47:52,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-02-17 01:47:52,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-17 01:47:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:52,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891610626] [2023-02-17 01:47:52,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:52,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651315451] [2023-02-17 01:47:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651315451] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 01:47:52,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:47:52,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-02-17 01:47:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178279218] [2023-02-17 01:47:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:47:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:47:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-17 01:47:52,871 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-17 01:47:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:52,945 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2023-02-17 01:47:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:47:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-02-17 01:47:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:52,946 INFO L225 Difference]: With dead ends: 103 [2023-02-17 01:47:52,946 INFO L226 Difference]: Without dead ends: 101 [2023-02-17 01:47:52,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-02-17 01:47:52,947 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:52,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:47:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-17 01:47:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-17 01:47:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.164179104477612) internal successors, (78), 70 states have internal predecessors, (78), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-17 01:47:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2023-02-17 01:47:52,964 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 48 [2023-02-17 01:47:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:52,964 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2023-02-17 01:47:52,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-17 01:47:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2023-02-17 01:47:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-17 01:47:52,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:52,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:52,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-17 01:47:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-17 01:47:53,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 145642443, now seen corresponding path program 1 times [2023-02-17 01:47:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:53,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378557560] [2023-02-17 01:47:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:53,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:53,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299237817] [2023-02-17 01:47:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:53,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:53,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:53,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 01:47:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:53,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-17 01:47:53,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 01:47:53,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 01:47:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378557560] [2023-02-17 01:47:53,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299237817] [2023-02-17 01:47:53,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299237817] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 01:47:53,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:47:53,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2023-02-17 01:47:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213740499] [2023-02-17 01:47:53,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:47:53,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:47:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:53,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:47:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-02-17 01:47:53,765 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 01:47:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:47:53,818 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2023-02-17 01:47:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:47:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2023-02-17 01:47:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:47:53,820 INFO L225 Difference]: With dead ends: 122 [2023-02-17 01:47:53,820 INFO L226 Difference]: Without dead ends: 120 [2023-02-17 01:47:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-02-17 01:47:53,821 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:47:53,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:47:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-17 01:47:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2023-02-17 01:47:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 77 states have internal predecessors, (87), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-17 01:47:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2023-02-17 01:47:53,843 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 48 [2023-02-17 01:47:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:47:53,844 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2023-02-17 01:47:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 01:47:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2023-02-17 01:47:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-17 01:47:53,845 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:47:53,845 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:47:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 01:47:54,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 01:47:54,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:47:54,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:47:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2023-02-17 01:47:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:47:54,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962213652] [2023-02-17 01:47:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:47:54,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:47:54,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724005224] [2023-02-17 01:47:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:47:54,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:47:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:47:54,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:47:54,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 01:47:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:47:54,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-17 01:47:54,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:47:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 01:47:54,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:47:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-17 01:47:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:47:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962213652] [2023-02-17 01:47:54,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:47:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724005224] [2023-02-17 01:47:54,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724005224] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:47:54,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:47:54,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-02-17 01:47:54,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251714900] [2023-02-17 01:47:54,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:47:54,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-17 01:47:54,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:47:54,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-17 01:47:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-02-17 01:47:54,758 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:48:03,910 INFO L93 Difference]: Finished difference Result 337 states and 468 transitions. [2023-02-17 01:48:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-17 01:48:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 60 [2023-02-17 01:48:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:48:03,913 INFO L225 Difference]: With dead ends: 337 [2023-02-17 01:48:03,913 INFO L226 Difference]: Without dead ends: 249 [2023-02-17 01:48:03,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=497, Invalid=2365, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 01:48:03,917 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 182 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:48:03,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 272 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-02-17 01:48:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-17 01:48:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 206. [2023-02-17 01:48:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.1851851851851851) internal successors, (160), 138 states have internal predecessors, (160), 57 states have call successors, (57), 13 states have call predecessors, (57), 13 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-02-17 01:48:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 273 transitions. [2023-02-17 01:48:04,053 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 273 transitions. Word has length 60 [2023-02-17 01:48:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:48:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 273 transitions. [2023-02-17 01:48:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 273 transitions. [2023-02-17 01:48:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-17 01:48:04,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:48:04,055 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:48:04,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 01:48:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-17 01:48:04,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:48:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:48:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2023-02-17 01:48:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:48:04,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626193865] [2023-02-17 01:48:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:48:04,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:48:04,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371516099] [2023-02-17 01:48:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:48:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:48:04,272 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:48:04,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 01:48:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:48:04,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 01:48:04,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:48:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 01:48:04,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:48:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-02-17 01:48:05,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:48:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626193865] [2023-02-17 01:48:05,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:48:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371516099] [2023-02-17 01:48:05,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371516099] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:48:05,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:48:05,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 23 [2023-02-17 01:48:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573641945] [2023-02-17 01:48:05,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:48:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:48:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:48:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:48:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-02-17 01:48:05,138 INFO L87 Difference]: Start difference. First operand 206 states and 273 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 19 states have internal predecessors, (61), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:48:23,070 INFO L93 Difference]: Finished difference Result 328 states and 460 transitions. [2023-02-17 01:48:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-17 01:48:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 19 states have internal predecessors, (61), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 68 [2023-02-17 01:48:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:48:23,072 INFO L225 Difference]: With dead ends: 328 [2023-02-17 01:48:23,072 INFO L226 Difference]: Without dead ends: 326 [2023-02-17 01:48:23,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=424, Invalid=2126, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 01:48:23,076 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 144 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-02-17 01:48:23,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 429 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-02-17 01:48:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-02-17 01:48:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 214. [2023-02-17 01:48:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.177304964539007) internal successors, (166), 144 states have internal predecessors, (166), 57 states have call successors, (57), 15 states have call predecessors, (57), 15 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-02-17 01:48:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 279 transitions. [2023-02-17 01:48:23,153 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 279 transitions. Word has length 68 [2023-02-17 01:48:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:48:23,153 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 279 transitions. [2023-02-17 01:48:23,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 19 states have internal predecessors, (61), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 279 transitions. [2023-02-17 01:48:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-17 01:48:23,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:48:23,154 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:48:23,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 01:48:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-17 01:48:23,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:48:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:48:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 798002477, now seen corresponding path program 2 times [2023-02-17 01:48:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:48:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999256552] [2023-02-17 01:48:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:48:23,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:48:23,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131269463] [2023-02-17 01:48:23,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:48:23,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:48:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:48:23,376 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:48:23,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 01:48:23,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:48:23,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:48:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 01:48:23,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:48:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-17 01:48:23,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:48:23,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:48:23,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999256552] [2023-02-17 01:48:23,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:48:23,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131269463] [2023-02-17 01:48:23,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131269463] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:48:23,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:48:23,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 01:48:23,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196781978] [2023-02-17 01:48:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:48:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 01:48:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:48:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 01:48:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:48:23,430 INFO L87 Difference]: Start difference. First operand 214 states and 279 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-17 01:48:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:48:23,561 INFO L93 Difference]: Finished difference Result 386 states and 519 transitions. [2023-02-17 01:48:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:48:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 73 [2023-02-17 01:48:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:48:23,563 INFO L225 Difference]: With dead ends: 386 [2023-02-17 01:48:23,563 INFO L226 Difference]: Without dead ends: 256 [2023-02-17 01:48:23,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:48:23,564 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:48:23,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 97 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:48:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-02-17 01:48:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2023-02-17 01:48:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 158 states have internal predecessors, (183), 75 states have call successors, (75), 15 states have call predecessors, (75), 15 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-02-17 01:48:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2023-02-17 01:48:23,676 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 73 [2023-02-17 01:48:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:48:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2023-02-17 01:48:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-17 01:48:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2023-02-17 01:48:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-17 01:48:23,682 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:48:23,682 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:48:23,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-17 01:48:23,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:48:23,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:48:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:48:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1622368081, now seen corresponding path program 3 times [2023-02-17 01:48:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:48:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137013509] [2023-02-17 01:48:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:23,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:48:23,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:48:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501494513] [2023-02-17 01:48:23,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 01:48:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:48:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:48:23,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:48:23,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 01:48:23,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 01:48:23,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:48:23,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-17 01:48:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:48:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-02-17 01:48:24,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:48:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-17 01:48:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:48:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137013509] [2023-02-17 01:48:24,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:48:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501494513] [2023-02-17 01:48:24,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501494513] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:48:24,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:48:24,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2023-02-17 01:48:24,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808878226] [2023-02-17 01:48:24,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:48:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-17 01:48:24,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:48:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-17 01:48:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-02-17 01:48:24,703 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:48:39,120 INFO L93 Difference]: Finished difference Result 382 states and 520 transitions. [2023-02-17 01:48:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-17 01:48:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 73 [2023-02-17 01:48:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:48:39,127 INFO L225 Difference]: With dead ends: 382 [2023-02-17 01:48:39,128 INFO L226 Difference]: Without dead ends: 380 [2023-02-17 01:48:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 01:48:39,130 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 206 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:48:39,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 390 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-02-17 01:48:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-02-17 01:48:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 315. [2023-02-17 01:48:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 198 states have (on average 1.1767676767676767) internal successors, (233), 199 states have internal predecessors, (233), 97 states have call successors, (97), 19 states have call predecessors, (97), 19 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-02-17 01:48:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 426 transitions. [2023-02-17 01:48:39,309 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 426 transitions. Word has length 73 [2023-02-17 01:48:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:48:39,315 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 426 transitions. [2023-02-17 01:48:39,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-17 01:48:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 426 transitions. [2023-02-17 01:48:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-17 01:48:39,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:48:39,319 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:48:39,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 01:48:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-17 01:48:39,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:48:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:48:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2023-02-17 01:48:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:48:39,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600413073] [2023-02-17 01:48:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:48:39,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:48:39,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766218487] [2023-02-17 01:48:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:48:39,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:48:39,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:48:39,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:48:39,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 01:48:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:48:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-17 01:48:39,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:48:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-02-17 01:48:39,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:48:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-02-17 01:48:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:48:42,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600413073] [2023-02-17 01:48:42,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:48:42,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766218487] [2023-02-17 01:48:42,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766218487] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:48:42,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:48:42,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2023-02-17 01:48:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731108533] [2023-02-17 01:48:42,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:48:42,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 01:48:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:48:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 01:48:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 01:48:42,954 INFO L87 Difference]: Start difference. First operand 315 states and 426 transitions. Second operand has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-17 01:48:44,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:48:55,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:49:05,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:49:19,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:49:19,962 INFO L93 Difference]: Finished difference Result 502 states and 696 transitions. [2023-02-17 01:49:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-17 01:49:19,963 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 87 [2023-02-17 01:49:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:49:19,986 INFO L225 Difference]: With dead ends: 502 [2023-02-17 01:49:19,986 INFO L226 Difference]: Without dead ends: 494 [2023-02-17 01:49:20,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1499, Invalid=6873, Unknown=0, NotChecked=0, Total=8372 [2023-02-17 01:49:20,004 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 322 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 581 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2023-02-17 01:49:20,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 436 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2598 Invalid, 2 Unknown, 0 Unchecked, 27.2s Time] [2023-02-17 01:49:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-02-17 01:49:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 463. [2023-02-17 01:49:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 290 states have (on average 1.196551724137931) internal successors, (347), 291 states have internal predecessors, (347), 149 states have call successors, (149), 23 states have call predecessors, (149), 23 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-02-17 01:49:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 644 transitions. [2023-02-17 01:49:20,395 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 644 transitions. Word has length 87 [2023-02-17 01:49:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:49:20,395 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 644 transitions. [2023-02-17 01:49:20,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-17 01:49:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 644 transitions. [2023-02-17 01:49:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-17 01:49:20,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:49:20,397 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:49:20,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-02-17 01:49:20,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-17 01:49:20,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:49:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:49:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1330396859, now seen corresponding path program 2 times [2023-02-17 01:49:20,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:49:20,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757779623] [2023-02-17 01:49:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:49:20,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:49:20,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:49:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271917444] [2023-02-17 01:49:20,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:49:20,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:49:20,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:49:20,609 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:49:20,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 01:49:20,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:49:20,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:49:20,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 01:49:20,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:49:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-17 01:49:20,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:49:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-17 01:49:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:49:20,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757779623] [2023-02-17 01:49:20,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:49:20,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271917444] [2023-02-17 01:49:20,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271917444] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:49:20,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:49:20,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2023-02-17 01:49:20,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961894481] [2023-02-17 01:49:20,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:49:20,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 01:49:20,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:49:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 01:49:20,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-02-17 01:49:20,735 INFO L87 Difference]: Start difference. First operand 463 states and 644 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-17 01:49:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:49:21,707 INFO L93 Difference]: Finished difference Result 555 states and 769 transitions. [2023-02-17 01:49:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-17 01:49:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2023-02-17 01:49:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:49:21,710 INFO L225 Difference]: With dead ends: 555 [2023-02-17 01:49:21,710 INFO L226 Difference]: Without dead ends: 548 [2023-02-17 01:49:21,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-02-17 01:49:21,711 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 81 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:49:21,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 360 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 01:49:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-02-17 01:49:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 426. [2023-02-17 01:49:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 262 states have internal predecessors, (314), 141 states have call successors, (141), 23 states have call predecessors, (141), 23 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-02-17 01:49:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 595 transitions. [2023-02-17 01:49:22,151 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 595 transitions. Word has length 95 [2023-02-17 01:49:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:49:22,152 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 595 transitions. [2023-02-17 01:49:22,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-17 01:49:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 595 transitions. [2023-02-17 01:49:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-02-17 01:49:22,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:49:22,153 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:49:22,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 01:49:22,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-17 01:49:22,358 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:49:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:49:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2024025072, now seen corresponding path program 2 times [2023-02-17 01:49:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:49:22,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669824406] [2023-02-17 01:49:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:49:22,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:49:22,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:49:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714725953] [2023-02-17 01:49:22,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:49:22,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:49:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:49:22,366 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:49:22,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 01:49:22,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:49:22,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:49:22,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-17 01:49:22,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:49:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 59 proven. 34 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-02-17 01:49:22,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:49:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 50 proven. 34 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-02-17 01:49:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:49:24,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669824406] [2023-02-17 01:49:24,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:49:24,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714725953] [2023-02-17 01:49:24,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714725953] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:49:24,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:49:24,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2023-02-17 01:49:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422478167] [2023-02-17 01:49:24,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:49:24,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 01:49:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:49:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 01:49:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2023-02-17 01:49:24,383 INFO L87 Difference]: Start difference. First operand 426 states and 595 transitions. Second operand has 32 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2023-02-17 01:50:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:50:16,738 INFO L93 Difference]: Finished difference Result 798 states and 1127 transitions. [2023-02-17 01:50:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-17 01:50:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) Word has length 107 [2023-02-17 01:50:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:50:16,741 INFO L225 Difference]: With dead ends: 798 [2023-02-17 01:50:16,741 INFO L226 Difference]: Without dead ends: 635 [2023-02-17 01:50:16,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2459 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1604, Invalid=7138, Unknown=0, NotChecked=0, Total=8742 [2023-02-17 01:50:16,743 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 251 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:50:16,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 379 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2023-02-17 01:50:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-02-17 01:50:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 577. [2023-02-17 01:50:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 348 states have (on average 1.206896551724138) internal successors, (420), 349 states have internal predecessors, (420), 201 states have call successors, (201), 27 states have call predecessors, (201), 27 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2023-02-17 01:50:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 821 transitions. [2023-02-17 01:50:17,436 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 821 transitions. Word has length 107 [2023-02-17 01:50:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:50:17,436 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 821 transitions. [2023-02-17 01:50:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2023-02-17 01:50:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 821 transitions. [2023-02-17 01:50:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-17 01:50:17,439 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:50:17,439 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:50:17,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-17 01:50:17,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-17 01:50:17,641 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:50:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:50:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1576994048, now seen corresponding path program 1 times [2023-02-17 01:50:17,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:50:17,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046261013] [2023-02-17 01:50:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:50:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:50:17,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:50:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447283391] [2023-02-17 01:50:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:50:17,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:50:17,650 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:50:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 01:50:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:50:17,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-17 01:50:17,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:50:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 72 proven. 49 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-02-17 01:50:17,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:50:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:50:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046261013] [2023-02-17 01:50:17,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:50:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447283391] [2023-02-17 01:50:17,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447283391] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:50:17,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:50:17,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-02-17 01:50:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175288651] [2023-02-17 01:50:17,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:50:17,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 01:50:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:50:17,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 01:50:17,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-02-17 01:50:17,967 INFO L87 Difference]: Start difference. First operand 577 states and 821 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2023-02-17 01:50:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:50:19,204 INFO L93 Difference]: Finished difference Result 612 states and 858 transitions. [2023-02-17 01:50:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 01:50:19,205 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 120 [2023-02-17 01:50:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:50:19,214 INFO L225 Difference]: With dead ends: 612 [2023-02-17 01:50:19,214 INFO L226 Difference]: Without dead ends: 610 [2023-02-17 01:50:19,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-02-17 01:50:19,216 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 72 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 01:50:19,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 294 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 01:50:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-02-17 01:50:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 595. [2023-02-17 01:50:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 359 states have (on average 1.2033426183844012) internal successors, (432), 360 states have internal predecessors, (432), 205 states have call successors, (205), 30 states have call predecessors, (205), 30 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-02-17 01:50:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 841 transitions. [2023-02-17 01:50:19,862 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 841 transitions. Word has length 120 [2023-02-17 01:50:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:50:19,863 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 841 transitions. [2023-02-17 01:50:19,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2023-02-17 01:50:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 841 transitions. [2023-02-17 01:50:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-17 01:50:19,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:50:19,864 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:50:19,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-17 01:50:20,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:20,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:50:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:50:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash -843376510, now seen corresponding path program 2 times [2023-02-17 01:50:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:50:20,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482348188] [2023-02-17 01:50:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:50:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:50:20,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:50:20,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39650256] [2023-02-17 01:50:20,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:50:20,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:50:20,084 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:50:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 01:50:20,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:50:20,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:50:20,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-17 01:50:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:50:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-02-17 01:50:20,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:50:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:50:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482348188] [2023-02-17 01:50:29,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:50:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39650256] [2023-02-17 01:50:29,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39650256] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:50:29,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:50:29,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-02-17 01:50:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894761306] [2023-02-17 01:50:29,147 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:50:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:50:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:50:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:50:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 01:50:29,149 INFO L87 Difference]: Start difference. First operand 595 states and 841 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-02-17 01:50:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:50:31,949 INFO L93 Difference]: Finished difference Result 663 states and 927 transitions. [2023-02-17 01:50:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-17 01:50:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 120 [2023-02-17 01:50:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:50:31,952 INFO L225 Difference]: With dead ends: 663 [2023-02-17 01:50:31,952 INFO L226 Difference]: Without dead ends: 661 [2023-02-17 01:50:31,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=345, Invalid=2105, Unknown=0, NotChecked=0, Total=2450 [2023-02-17 01:50:31,953 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 97 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:50:31,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 337 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 01:50:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-02-17 01:50:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 639. [2023-02-17 01:50:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 384 states have (on average 1.203125) internal successors, (462), 385 states have internal predecessors, (462), 221 states have call successors, (221), 33 states have call predecessors, (221), 33 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-02-17 01:50:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 903 transitions. [2023-02-17 01:50:32,617 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 903 transitions. Word has length 120 [2023-02-17 01:50:32,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:50:32,618 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 903 transitions. [2023-02-17 01:50:32,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-02-17 01:50:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 903 transitions. [2023-02-17 01:50:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-02-17 01:50:32,619 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:50:32,619 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:50:32,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-02-17 01:50:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:32,825 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:50:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:50:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 74175480, now seen corresponding path program 3 times [2023-02-17 01:50:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:50:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747551021] [2023-02-17 01:50:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:50:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:50:32,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:50:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297236732] [2023-02-17 01:50:32,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 01:50:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:50:32,832 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:50:32,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-17 01:50:32,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 01:50:32,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:50:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-17 01:50:32,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:50:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 46 proven. 49 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-02-17 01:50:33,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:50:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 59 proven. 14 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-02-17 01:50:33,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:50:33,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747551021] [2023-02-17 01:50:33,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:50:33,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297236732] [2023-02-17 01:50:33,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297236732] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:50:33,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:50:33,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 27 [2023-02-17 01:50:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341147948] [2023-02-17 01:50:33,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:50:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-17 01:50:33,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:50:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-17 01:50:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-02-17 01:50:33,333 INFO L87 Difference]: Start difference. First operand 639 states and 903 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 9 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-02-17 01:50:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:50:39,475 INFO L93 Difference]: Finished difference Result 1120 states and 1667 transitions. [2023-02-17 01:50:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-02-17 01:50:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 9 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 125 [2023-02-17 01:50:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:50:39,479 INFO L225 Difference]: With dead ends: 1120 [2023-02-17 01:50:39,479 INFO L226 Difference]: Without dead ends: 1118 [2023-02-17 01:50:39,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1313, Invalid=5493, Unknown=0, NotChecked=0, Total=6806 [2023-02-17 01:50:39,481 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 216 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:50:39,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 922 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-02-17 01:50:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-02-17 01:50:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 990. [2023-02-17 01:50:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 546 states have (on average 1.250915750915751) internal successors, (683), 547 states have internal predecessors, (683), 405 states have call successors, (405), 38 states have call predecessors, (405), 38 states have return successors, (404), 404 states have call predecessors, (404), 404 states have call successors, (404) [2023-02-17 01:50:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1492 transitions. [2023-02-17 01:50:40,753 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1492 transitions. Word has length 125 [2023-02-17 01:50:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:50:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1492 transitions. [2023-02-17 01:50:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 24 states have internal predecessors, (63), 9 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-02-17 01:50:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1492 transitions. [2023-02-17 01:50:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-02-17 01:50:40,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:50:40,755 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:50:40,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-17 01:50:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:40,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:50:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:50:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1948772218, now seen corresponding path program 4 times [2023-02-17 01:50:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:50:40,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529153778] [2023-02-17 01:50:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:50:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:50:40,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:50:40,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107035002] [2023-02-17 01:50:40,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 01:50:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:50:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:50:40,971 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:50:40,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-17 01:50:41,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 01:50:41,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:50:41,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 102 conjunts are in the unsatisfiable core [2023-02-17 01:50:41,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:50:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 58 proven. 86 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-02-17 01:50:41,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:50:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 76 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-17 01:50:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:50:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529153778] [2023-02-17 01:50:43,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:50:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107035002] [2023-02-17 01:50:43,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107035002] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:50:43,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:50:43,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 41 [2023-02-17 01:50:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211547039] [2023-02-17 01:50:43,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:50:43,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-17 01:50:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:50:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-17 01:50:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2023-02-17 01:50:43,433 INFO L87 Difference]: Start difference. First operand 990 states and 1492 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 39 states have internal predecessors, (88), 12 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2023-02-17 01:50:48,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:50:50,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:50:52,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:51:01,623 INFO L93 Difference]: Finished difference Result 1158 states and 1759 transitions. [2023-02-17 01:51:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-17 01:51:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 39 states have internal predecessors, (88), 12 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 125 [2023-02-17 01:51:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:51:01,629 INFO L225 Difference]: With dead ends: 1158 [2023-02-17 01:51:01,629 INFO L226 Difference]: Without dead ends: 1154 [2023-02-17 01:51:01,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=795, Invalid=3495, Unknown=0, NotChecked=0, Total=4290 [2023-02-17 01:51:01,632 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 174 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 349 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:51:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 549 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2529 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2023-02-17 01:51:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2023-02-17 01:51:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 992. [2023-02-17 01:51:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 548 states have (on average 1.2481751824817517) internal successors, (684), 548 states have internal predecessors, (684), 405 states have call successors, (405), 39 states have call predecessors, (405), 38 states have return successors, (404), 404 states have call predecessors, (404), 404 states have call successors, (404) [2023-02-17 01:51:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1493 transitions. [2023-02-17 01:51:03,227 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1493 transitions. Word has length 125 [2023-02-17 01:51:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:51:03,227 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1493 transitions. [2023-02-17 01:51:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 39 states have internal predecessors, (88), 12 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2023-02-17 01:51:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1493 transitions. [2023-02-17 01:51:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-17 01:51:03,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:51:03,230 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:51:03,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-02-17 01:51:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:51:03,435 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:51:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:51:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1192369783, now seen corresponding path program 3 times [2023-02-17 01:51:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:51:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519523926] [2023-02-17 01:51:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:51:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:51:03,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:51:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421963115] [2023-02-17 01:51:03,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 01:51:03,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:51:03,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:51:03,445 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:51:03,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-17 01:51:03,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-17 01:51:03,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:51:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-17 01:51:03,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:51:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 114 proven. 64 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-02-17 01:51:04,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:51:07,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:51:07,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519523926] [2023-02-17 01:51:07,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:51:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421963115] [2023-02-17 01:51:07,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421963115] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:51:07,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:51:07,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-02-17 01:51:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68094654] [2023-02-17 01:51:07,968 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:51:07,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-17 01:51:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:51:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-17 01:51:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2023-02-17 01:51:07,970 INFO L87 Difference]: Start difference. First operand 992 states and 1493 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 22 states have internal predecessors, (44), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-17 01:51:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:51:12,524 INFO L93 Difference]: Finished difference Result 1138 states and 1702 transitions. [2023-02-17 01:51:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-17 01:51:12,525 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 22 states have internal predecessors, (44), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 134 [2023-02-17 01:51:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:51:12,529 INFO L225 Difference]: With dead ends: 1138 [2023-02-17 01:51:12,529 INFO L226 Difference]: Without dead ends: 1133 [2023-02-17 01:51:12,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2023-02-17 01:51:12,530 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:51:12,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 402 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-17 01:51:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-02-17 01:51:14,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1111. [2023-02-17 01:51:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 609 states have (on average 1.251231527093596) internal successors, (762), 609 states have internal predecessors, (762), 457 states have call successors, (457), 45 states have call predecessors, (457), 44 states have return successors, (456), 456 states have call predecessors, (456), 456 states have call successors, (456) [2023-02-17 01:51:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1675 transitions. [2023-02-17 01:51:14,127 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1675 transitions. Word has length 134 [2023-02-17 01:51:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:51:14,127 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1675 transitions. [2023-02-17 01:51:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 22 states have internal predecessors, (44), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-17 01:51:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1675 transitions. [2023-02-17 01:51:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-17 01:51:14,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:51:14,129 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:51:14,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-17 01:51:14,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:51:14,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:51:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:51:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1841111375, now seen corresponding path program 4 times [2023-02-17 01:51:14,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:51:14,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790996148] [2023-02-17 01:51:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:51:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:51:14,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:51:14,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330126397] [2023-02-17 01:51:14,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 01:51:14,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:51:14,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:51:14,350 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:51:14,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-17 01:51:14,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 01:51:14,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:51:14,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 94 conjunts are in the unsatisfiable core [2023-02-17 01:51:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:51:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 69 proven. 103 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-02-17 01:51:14,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:51:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 88 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-02-17 01:51:18,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:51:18,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790996148] [2023-02-17 01:51:18,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:51:18,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330126397] [2023-02-17 01:51:18,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330126397] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:51:18,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:51:18,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2023-02-17 01:51:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060876698] [2023-02-17 01:51:18,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:51:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 01:51:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:51:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 01:51:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 01:51:18,655 INFO L87 Difference]: Start difference. First operand 1111 states and 1675 transitions. Second operand has 33 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 32 states have internal predecessors, (73), 12 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2023-02-17 01:51:31,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:33,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:35,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:40,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:42,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:44,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:48,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:52,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:51:54,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:52:02,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:52:11,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 01:52:13,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []