./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.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/cohendiv-ll_unwindbound5.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 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 01:21:55,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 01:21:55,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 01:21:55,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 01:21:55,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 01:21:55,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 01:21:55,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 01:21:55,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 01:21:55,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 01:21:55,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 01:21:55,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 01:21:55,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 01:21:55,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 01:21:55,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 01:21:55,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 01:21:55,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 01:21:55,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 01:21:55,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 01:21:55,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 01:21:55,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 01:21:55,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 01:21:55,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 01:21:55,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 01:21:55,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 01:21:55,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 01:21:55,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 01:21:55,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 01:21:55,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 01:21:55,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 01:21:55,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 01:21:55,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 01:21:55,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 01:21:55,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 01:21:55,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 01:21:55,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 01:21:55,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 01:21:55,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 01:21:55,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 01:21:55,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 01:21:55,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 01:21:55,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 01:21:55,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 01:21:55,801 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 01:21:55,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 01:21:55,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 01:21:55,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 01:21:55,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 01:21:55,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 01:21:55,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 01:21:55,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 01:21:55,805 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 01:21:55,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 01:21:55,806 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 01:21:55,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 01:21:55,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 01:21:55,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 01:21:55,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 01:21:55,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 01:21:55,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 01:21:55,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 01:21:55,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:21:55,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 01:21:55,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 01:21:55,815 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 01:21:55,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 01:21:55,815 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 01:21:55,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d [2023-02-18 01:21:56,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 01:21:56,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 01:21:56,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 01:21:56,027 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 01:21:56,028 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 01:21:56,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-02-18 01:21:56,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 01:21:57,178 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 01:21:57,178 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-02-18 01:21:57,184 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048d909e/3c51eb82309e4b208a463991b0871061/FLAG2ecf44cc7 [2023-02-18 01:21:57,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048d909e/3c51eb82309e4b208a463991b0871061 [2023-02-18 01:21:57,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 01:21:57,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 01:21:57,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 01:21:57,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 01:21:57,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 01:21:57,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6001a1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57, skipping insertion in model container [2023-02-18 01:21:57,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 01:21:57,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 01:21:57,306 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/cohendiv-ll_unwindbound5.c[576,589] [2023-02-18 01:21:57,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:21:57,335 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 01:21:57,345 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/cohendiv-ll_unwindbound5.c[576,589] [2023-02-18 01:21:57,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:21:57,365 INFO L208 MainTranslator]: Completed translation [2023-02-18 01:21:57,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57 WrapperNode [2023-02-18 01:21:57,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 01:21:57,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 01:21:57,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 01:21:57,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 01:21:57,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,387 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-18 01:21:57,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 01:21:57,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 01:21:57,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 01:21:57,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 01:21:57,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 01:21:57,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 01:21:57,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 01:21:57,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 01:21:57,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (1/1) ... [2023-02-18 01:21:57,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:21:57,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:57,441 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) [2023-02-18 01:21:57,442 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 [2023-02-18 01:21:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 01:21:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 01:21:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 01:21:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 01:21:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 01:21:57,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 01:21:57,514 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 01:21:57,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 01:21:57,701 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 01:21:57,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 01:21:57,719 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 01:21:57,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:57 BoogieIcfgContainer [2023-02-18 01:21:57,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 01:21:57,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 01:21:57,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 01:21:57,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 01:21:57,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:21:57" (1/3) ... [2023-02-18 01:21:57,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f13a208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:21:57, skipping insertion in model container [2023-02-18 01:21:57,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:21:57" (2/3) ... [2023-02-18 01:21:57,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f13a208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:21:57, skipping insertion in model container [2023-02-18 01:21:57,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:57" (3/3) ... [2023-02-18 01:21:57,735 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2023-02-18 01:21:57,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 01:21:57,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 01:21:57,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 01:21:57,785 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;@303c87c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 01:21:57,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 01:21:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 01:21:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 01:21:57,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:57,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:57,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-18 01:21:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:57,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635069192] [2023-02-18 01:21:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:57,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635069192] [2023-02-18 01:21:57,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 01:21:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114536014] [2023-02-18 01:21:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:57,885 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) [2023-02-18 01:21:57,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 01:21:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:57,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 01:21:57,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:57,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:57,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114536014] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:57,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:57,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 01:21:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130806726] [2023-02-18 01:21:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 01:21:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 01:21:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 01:21:57,970 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:57,985 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-18 01:21:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 01:21:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 01:21:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:57,991 INFO L225 Difference]: With dead ends: 55 [2023-02-18 01:21:57,991 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 01:21:57,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 01:21:57,996 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2023-02-18 01:21:57,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 01:21:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 01:21:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 01:21:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-18 01:21:58,021 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-18 01:21:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-18 01:21:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-18 01:21:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 01:21:58,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:58,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:58,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 01:21:58,228 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 [2023-02-18 01:21:58,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-18 01:21:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:58,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576993846] [2023-02-18 01:21:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:58,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576993846] [2023-02-18 01:21:58,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 01:21:58,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839889648] [2023-02-18 01:21:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:58,285 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) [2023-02-18 01:21:58,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 01:21:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 01:21:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:58,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:58,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839889648] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:58,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:58,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 01:21:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230244902] [2023-02-18 01:21:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 01:21:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:58,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 01:21:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 01:21:58,366 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:58,392 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-18 01:21:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 01:21:58,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 01:21:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:58,397 INFO L225 Difference]: With dead ends: 34 [2023-02-18 01:21:58,397 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 01:21:58,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 01:21:58,399 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:58,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 01:21:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-18 01:21:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 01:21:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-18 01:21:58,408 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-18 01:21:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:58,409 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-18 01:21:58,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-18 01:21:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 01:21:58,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:58,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:58,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:58,615 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 [2023-02-18 01:21:58,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-18 01:21:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149882425] [2023-02-18 01:21:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:58,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:58,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591265078] [2023-02-18 01:21:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:58,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:58,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:58,636 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) [2023-02-18 01:21:58,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 01:21:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:58,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 01:21:58,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:58,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149882425] [2023-02-18 01:21:58,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591265078] [2023-02-18 01:21:58,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591265078] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:58,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:58,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 01:21:58,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080552147] [2023-02-18 01:21:58,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:58,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:58,700 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:58,768 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-18 01:21:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:21:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 01:21:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:58,769 INFO L225 Difference]: With dead ends: 37 [2023-02-18 01:21:58,770 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 01:21:58,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 01:21:58,771 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:21:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 01:21:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 01:21:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 01:21:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-18 01:21:58,780 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-18 01:21:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:58,781 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-18 01:21:58,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:21:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-18 01:21:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 01:21:58,782 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:58,782 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:58,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:58,986 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 [2023-02-18 01:21:58,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-18 01:21:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:58,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142162362] [2023-02-18 01:21:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:58,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:59,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469058362] [2023-02-18 01:21:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:59,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:59,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:59,001 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) [2023-02-18 01:21:59,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 01:21:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 01:21:59,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:59,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 01:21:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:59,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142162362] [2023-02-18 01:21:59,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:59,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469058362] [2023-02-18 01:21:59,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469058362] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:21:59,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:21:59,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-02-18 01:21:59,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399758891] [2023-02-18 01:21:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 01:21:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 01:21:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:21:59,165 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 01:21:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:59,243 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-18 01:21:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:21:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 01:21:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:59,246 INFO L225 Difference]: With dead ends: 50 [2023-02-18 01:21:59,247 INFO L226 Difference]: Without dead ends: 47 [2023-02-18 01:21:59,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:59,248 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:59,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:21:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-18 01:21:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-18 01:21:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 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) [2023-02-18 01:21:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-18 01:21:59,264 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-18 01:21:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:59,264 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-18 01:21:59,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 01:21:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-18 01:21:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 01:21:59,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:59,266 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:59,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 01:21:59,471 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 [2023-02-18 01:21:59,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-18 01:21:59,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:59,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065124129] [2023-02-18 01:21:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:59,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:59,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:59,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831567263] [2023-02-18 01:21:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:59,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:59,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:59,482 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) [2023-02-18 01:21:59,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 01:21:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:59,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 01:21:59,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 01:21:59,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:21:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:21:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:59,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065124129] [2023-02-18 01:21:59,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:59,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831567263] [2023-02-18 01:21:59,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831567263] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:21:59,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:21:59,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-18 01:21:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753680244] [2023-02-18 01:21:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:59,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:21:59,566 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:59,614 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-18 01:21:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:21:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 01:21:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:59,616 INFO L225 Difference]: With dead ends: 52 [2023-02-18 01:21:59,616 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 01:21:59,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:21:59,617 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:59,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 01:21:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-18 01:21:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-18 01:21:59,624 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-18 01:21:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:59,625 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-18 01:21:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-18 01:21:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 01:21:59,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:59,626 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:59,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 01:21:59,830 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 [2023-02-18 01:21:59,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:21:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:21:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-18 01:21:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:21:59,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597591736] [2023-02-18 01:21:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:21:59,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:21:59,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540292228] [2023-02-18 01:21:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:21:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:21:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:21:59,840 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) [2023-02-18 01:21:59,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 01:21:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:21:59,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 01:21:59,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:21:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:21:59,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:21:59,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:21:59,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597591736] [2023-02-18 01:21:59,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:21:59,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540292228] [2023-02-18 01:21:59,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540292228] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:21:59,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:21:59,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 01:21:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596072949] [2023-02-18 01:21:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:21:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:21:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:21:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:21:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:59,886 INFO L87 Difference]: Start difference. First operand 50 states and 64 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:21:59,904 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-18 01:21:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:21:59,905 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-18 01:21:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:21:59,905 INFO L225 Difference]: With dead ends: 81 [2023-02-18 01:21:59,905 INFO L226 Difference]: Without dead ends: 56 [2023-02-18 01:21:59,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:21:59,906 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:21:59,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:21:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-18 01:21:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-18 01:21:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:21:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-18 01:21:59,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-18 01:21:59,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:21:59,914 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-18 01:21:59,914 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:21:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-18 01:21:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 01:21:59,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:21:59,915 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:21:59,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 01:22:00,119 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 [2023-02-18 01:22:00,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:22:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:22:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-18 01:22:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:22:00,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102379657] [2023-02-18 01:22:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:22:00,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:22:00,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278041146] [2023-02-18 01:22:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:00,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:22:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:22:00,128 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) [2023-02-18 01:22:00,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 01:22:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:22:00,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 01:22:00,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:22:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:22:00,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:22:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:22:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102379657] [2023-02-18 01:22:00,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:22:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278041146] [2023-02-18 01:22:00,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278041146] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:22:00,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:22:00,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 01:22:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863558911] [2023-02-18 01:22:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:22:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 01:22:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:22:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 01:22:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 01:22:00,197 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:22:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:22:00,256 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-18 01:22:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 01:22:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-18 01:22:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:22:00,260 INFO L225 Difference]: With dead ends: 62 [2023-02-18 01:22:00,260 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 01:22:00,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:22:00,264 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:22:00,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:22:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 01:22:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 01:22:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:22:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-18 01:22:00,285 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-18 01:22:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:22:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-18 01:22:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:22:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-18 01:22:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 01:22:00,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:22:00,287 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:22:00,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 01:22:00,494 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 [2023-02-18 01:22:00,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:22:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:22:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-18 01:22:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:22:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458100224] [2023-02-18 01:22:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:22:00,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:22:00,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873325] [2023-02-18 01:22:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:00,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:22:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:22:00,502 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) [2023-02-18 01:22:00,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 01:22:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:22:00,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 01:22:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:22:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 01:22:00,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:22:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 01:22:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:22:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458100224] [2023-02-18 01:22:00,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:22:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873325] [2023-02-18 01:22:00,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873325] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:22:00,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:22:00,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-18 01:22:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916636835] [2023-02-18 01:22:00,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:22:00,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 01:22:00,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:22:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 01:22:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:22:00,724 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 01:22:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:22:00,837 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-18 01:22:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 01:22:00,837 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-18 01:22:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:22:00,839 INFO L225 Difference]: With dead ends: 79 [2023-02-18 01:22:00,839 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 01:22:00,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-18 01:22:00,840 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:22:00,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 110 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:22:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 01:22:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-18 01:22:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:22:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-18 01:22:00,847 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-18 01:22:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:22:00,848 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-18 01:22:00,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 01:22:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-18 01:22:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 01:22:00,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:22:00,849 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2023-02-18 01:22:00,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 01:22:01,054 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 [2023-02-18 01:22:01,054 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:22:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:22:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-18 01:22:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:22:01,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011357179] [2023-02-18 01:22:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:01,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:22:01,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:22:01,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579605319] [2023-02-18 01:22:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:01,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:22:01,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:22:01,062 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) [2023-02-18 01:22:01,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 01:22:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:22:01,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 01:22:01,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:22:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 01:22:01,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:22:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 01:22:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:22:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011357179] [2023-02-18 01:22:01,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:22:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579605319] [2023-02-18 01:22:01,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579605319] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:22:01,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:22:01,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-02-18 01:22:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290898196] [2023-02-18 01:22:01,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:22:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 01:22:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:22:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 01:22:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:22:01,129 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 01:22:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:22:01,227 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2023-02-18 01:22:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 01:22:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-18 01:22:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:22:01,230 INFO L225 Difference]: With dead ends: 180 [2023-02-18 01:22:01,230 INFO L226 Difference]: Without dead ends: 173 [2023-02-18 01:22:01,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-02-18 01:22:01,231 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:22:01,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 170 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:22:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-02-18 01:22:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2023-02-18 01:22:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 108 states have internal predecessors, (123), 33 states have call successors, (33), 20 states have call predecessors, (33), 20 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-18 01:22:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2023-02-18 01:22:01,260 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 42 [2023-02-18 01:22:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:22:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2023-02-18 01:22:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 01:22:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2023-02-18 01:22:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 01:22:01,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:22:01,263 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:22:01,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 01:22:01,468 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 [2023-02-18 01:22:01,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:22:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:22:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-18 01:22:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:22:01,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289590499] [2023-02-18 01:22:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:01,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:22:01,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:22:01,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52922064] [2023-02-18 01:22:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:22:01,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:22:01,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:22:01,481 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) [2023-02-18 01:22:01,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 01:22:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:22:01,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 01:22:01,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:22:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 01:22:01,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:22:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 01:22:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:22:01,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289590499] [2023-02-18 01:22:01,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:22:01,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52922064] [2023-02-18 01:22:01,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52922064] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:22:01,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:22:01,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-18 01:22:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983816738] [2023-02-18 01:22:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:22:01,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 01:22:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:22:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 01:22:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 01:22:01,650 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:22:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:22:01,819 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2023-02-18 01:22:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:22:01,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-18 01:22:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:22:01,820 INFO L225 Difference]: With dead ends: 159 [2023-02-18 01:22:01,820 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 01:22:01,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-18 01:22:01,824 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:22:01,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:22:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 01:22:01,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 01:22:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 01:22:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 01:22:01,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-18 01:22:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:22:01,826 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 01:22:01,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:22:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 01:22:01,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 01:22:01,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 01:22:01,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 01:22:02,033 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 [2023-02-18 01:22:02,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 01:22:02,043 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse5 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse7) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (let ((.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse5 .cse6 .cse7 .cse10 .cse11 .cse8 .cse9) (and .cse6 .cse7 .cse10 .cse11 .cse8 .cse9)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse3 (< ~counter~0 5)) (.cse4 (or (and .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse6 .cse7 .cse8 .cse9)))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 (< ~counter~0 4) .cse2) (and .cse0 .cse1 .cse3 .cse4))))) [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-18 01:22:02,044 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (<= ~counter~0 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ~counter~0 5)) (and .cse0 .cse1 .cse2 (< ~counter~0 4) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:22:02,045 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ~counter~0 5)) (and .cse0 .cse1 .cse2 (< ~counter~0 4) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:22:02,045 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 01:22:02,045 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse5 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse11 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse6 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse2 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (>= |ULTIMATE.start_main_~r~0#1| (* .cse11 2))) (.cse4 (= .cse11 |ULTIMATE.start_main_~b~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse5) (and (not .cse5) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse10 (< ~counter~0 5))) (or (and .cse0 .cse1 (or (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) (and (<= (+ ~counter~0 (- 1)) 1) .cse2 .cse0 .cse3 .cse4 .cse1 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse2 .cse0 .cse3 .cse4 .cse1 (< ~counter~0 4) .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse1 (or (and .cse2 .cse3 .cse4 .cse5 .cse8 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 .cse10)))))) [2023-02-18 01:22:02,045 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-18 01:22:02,045 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:22:02,045 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse5 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse5) (and (not .cse5) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse11 (and .cse0 .cse2 .cse5 .cse8 .cse9)) (.cse12 (and .cse2 .cse5 .cse8 .cse9))) (let ((.cse4 (< ~counter~0 4)) (.cse14 (or .cse11 .cse12)) (.cse10 (+ ~counter~0 (- 1))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse13 (< ~counter~0 5)) (.cse6 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (<= .cse10 1) .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9) (and (or .cse11 .cse12 (and .cse13 .cse14)) .cse1 .cse3) (and .cse1 .cse3 .cse4 .cse14) (and .cse1 .cse2 .cse3 (<= .cse10 0) .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse1 (or (and .cse0 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse13) (and .cse0 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9)) .cse3)))))) [2023-02-18 01:22:02,045 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-18 01:22:02,046 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 01:22:02,046 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ~counter~0 5)) (and .cse0 .cse1 .cse2 (< ~counter~0 4) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:22:02,046 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse3) (and (not .cse3) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (or (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 0) .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ~counter~0 5)) (and .cse0 .cse1 .cse2 (< ~counter~0 4) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4)))) [2023-02-18 01:22:02,046 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-18 01:22:02,046 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse5 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse7) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (let ((.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse5 .cse6 .cse7 .cse10 .cse11 .cse8 .cse9) (and .cse6 .cse7 .cse10 .cse11 .cse8 .cse9)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse3 (< ~counter~0 5)) (.cse4 (or (and .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse6 .cse7 .cse8 .cse9)))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 (< ~counter~0 4) .cse2) (and .cse0 .cse1 .cse3 .cse4))))) [2023-02-18 01:22:02,046 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse7 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse5 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse7) (and (not .cse7) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse2 (let ((.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse5 .cse6 .cse7 .cse10 .cse11 .cse8 .cse9) (and .cse6 .cse7 .cse10 .cse11 .cse8 .cse9)))) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse3 (< ~counter~0 5)) (.cse4 (or (and .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse6 .cse7 .cse8 .cse9)))) (or (and (<= (+ ~counter~0 (- 1)) 1) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse4) (and .cse0 .cse1 (< ~counter~0 4) .cse2) (and .cse0 .cse1 .cse3 .cse4))))) [2023-02-18 01:22:02,046 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-18 01:22:02,047 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-18 01:22:02,047 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-18 01:22:02,047 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-18 01:22:02,047 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-18 01:22:02,047 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: (let ((.cse13 (+ ~counter~0 (- 1)))) (let ((.cse3 (< ~counter~0 5)) (.cse8 (= |__VERIFIER_assert_#in~cond| 1)) (.cse11 (< ~counter~0 4)) (.cse5 (<= .cse13 1)) (.cse0 (= |__VERIFIER_assert_#in~cond| 0)) (.cse10 (<= .cse13 0))) (let ((.cse9 (not .cse10)) (.cse2 (not .cse0)) (.cse4 (not .cse5)) (.cse12 (not .cse11)) (.cse7 (not .cse8)) (.cse6 (and .cse8 .cse3)) (.cse1 (not .cse3))) (and (or .cse0 .cse1 (and .cse2 .cse3)) (or .cse4 (and .cse5 .cse2) .cse0) (or .cse6 (and .cse7 (or .cse7 .cse1)) .cse8) (or (and .cse2 .cse8 .cse3) .cse7 .cse0 .cse1) (or .cse9 .cse0 (and .cse2 .cse10)) (or .cse4 .cse7 .cse0 (and .cse5 .cse2 .cse8)) (or (and .cse2 .cse11 .cse8) .cse7 .cse0 .cse12) (or .cse0 (and .cse2 .cse11) .cse12) (or .cse9 .cse7 (and .cse2 .cse10 .cse8) .cse0) (or .cse4 .cse7 (and .cse5 .cse8)) (or (and .cse11 .cse8) .cse7 .cse12) (or .cse7 .cse6 .cse1))))) [2023-02-18 01:22:02,047 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 01:22:02,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:22:02,050 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 01:22:02,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:22:02 BoogieIcfgContainer [2023-02-18 01:22:02,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 01:22:02,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 01:22:02,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 01:22:02,081 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 01:22:02,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:21:57" (3/4) ... [2023-02-18 01:22:02,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 01:22:02,087 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 01:22:02,090 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-18 01:22:02,091 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 01:22:02,091 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 01:22:02,091 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 01:22:02,111 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 01:22:02,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 01:22:02,112 INFO L158 Benchmark]: Toolchain (without parser) took 4915.02ms. Allocated memory was 104.9MB in the beginning and 153.1MB in the end (delta: 48.2MB). Free memory was 65.6MB in the beginning and 72.8MB in the end (delta: -7.2MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,112 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:22:02,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.22ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 54.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.26ms. Allocated memory is still 104.9MB. Free memory was 54.9MB in the beginning and 53.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,113 INFO L158 Benchmark]: Boogie Preprocessor took 14.10ms. Allocated memory is still 104.9MB. Free memory was 53.1MB in the beginning and 52.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:22:02,113 INFO L158 Benchmark]: RCFGBuilder took 318.25ms. Allocated memory is still 104.9MB. Free memory was 52.1MB in the beginning and 77.3MB in the end (delta: -25.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,113 INFO L158 Benchmark]: TraceAbstraction took 4348.75ms. Allocated memory is still 153.1MB. Free memory was 127.4MB in the beginning and 76.0MB in the end (delta: 51.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,113 INFO L158 Benchmark]: Witness Printer took 31.33ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 72.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 01:22:02,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.22ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 54.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.26ms. Allocated memory is still 104.9MB. Free memory was 54.9MB in the beginning and 53.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.10ms. Allocated memory is still 104.9MB. Free memory was 53.1MB in the beginning and 52.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.25ms. Allocated memory is still 104.9MB. Free memory was 52.1MB in the beginning and 77.3MB in the end (delta: -25.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4348.75ms. Allocated memory is still 153.1MB. Free memory was 127.4MB in the beginning and 76.0MB in the end (delta: 51.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Witness Printer took 31.33ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 72.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 972 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 657 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 596 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 315 mSDtfsCounter, 596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=9, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 60 PreInvPairs, 106 NumberOfFragments, 3518 HoareAnnotationTreeSize, 60 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 1517 SizeOfPredicates, 39 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 374/418 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((r >= 0 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && counter < 4) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((((((((counter + -1 <= 1 && r >= 0) && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (counter < 5 && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) && x == (a + q) * y + (r + -b)) && x == r + q * y)) || (((x == (a + q) * y + (r + -b) && x == r + q * y) && counter < 4) && (((((r >= 0 && a * y == b) && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((a * y == b && y >= 1) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))))) || ((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && counter + -1 <= 0) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((x == (a + q) * y + (r + -b) && ((((((((r >= 0 && a * y == b) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) && counter < 5) || ((((((r >= 0 && a * y == b) && y >= 1) && r == x) && q == 0) && 1 <= r) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))))) && x == r + q * y) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && b == 0) && y >= 1) && r == x) && counter <= 0) && q == 0) && a == 0) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) || (((((counter + -1 <= 1 && x == (a + q) * y + (r + -b)) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) && counter < 5)) || (((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && counter < 4) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0)))) || ((((x == (a + q) * y + (r + -b) && a * y == b) && x == r + q * y) && y >= 1) && ((cond == 1 && y >= 1) || (!(y >= 1) && cond == 0))) RESULT: Ultimate proved your program to be correct! [2023-02-18 01:22:02,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE