./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/divbin_unwindbound2.i -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 ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:55:09,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:55:09,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:55:09,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:55:09,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:55:09,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:55:09,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:55:09,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:55:09,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:55:09,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:55:09,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:55:09,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:55:09,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:55:09,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:55:09,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:55:09,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:55:09,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:55:09,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:55:09,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:55:09,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:55:09,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:55:09,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:55:09,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:55:09,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:55:09,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:55:09,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:55:09,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:55:09,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:55:09,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:55:09,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:55:09,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:55:09,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:55:09,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:55:09,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:55:09,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:55:09,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:55:09,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:55:09,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:55:09,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:55:09,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:55:09,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:55:09,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:55:09,648 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:55:09,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:55:09,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:55:09,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:55:09,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:55:09,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:55:09,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:55:09,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:55:09,650 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:55:09,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:55:09,651 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:55:09,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:55:09,652 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:55:09,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:55:09,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:55:09,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:55:09,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:55:09,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:55:09,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:55:09,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:55:09,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:55:09,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:55:09,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:55:09,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:55:09,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:55:09,655 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:55:09,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:55:09,655 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:55:09,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e [2023-02-16 01:55:09,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:55:09,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:55:09,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:55:09,820 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:55:09,820 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:55:09,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2023-02-16 01:55:10,814 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:55:10,941 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:55:10,941 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2023-02-16 01:55:10,946 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a0a1c06/671ad03e279c435dbb65112ee81fcef5/FLAGf57ad8124 [2023-02-16 01:55:10,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a0a1c06/671ad03e279c435dbb65112ee81fcef5 [2023-02-16 01:55:10,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:55:10,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:55:10,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:55:10,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:55:10,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:55:10,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:55:10" (1/1) ... [2023-02-16 01:55:10,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62363e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:10, skipping insertion in model container [2023-02-16 01:55:10,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:55:10" (1/1) ... [2023-02-16 01:55:10,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:55:10,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:55:11,086 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/divbin_unwindbound2.i[950,963] [2023-02-16 01:55:11,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:55:11,115 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:55:11,123 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/divbin_unwindbound2.i[950,963] [2023-02-16 01:55:11,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:55:11,149 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:55:11,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11 WrapperNode [2023-02-16 01:55:11,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:55:11,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:55:11,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:55:11,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:55:11,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,171 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-16 01:55:11,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:55:11,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:55:11,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:55:11,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:55:11,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:55:11,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:55:11,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:55:11,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:55:11,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (1/1) ... [2023-02-16 01:55:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:55:11,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:11,216 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) [2023-02-16 01:55:11,250 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 [2023-02-16 01:55:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:55:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 01:55:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 01:55:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:55:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:55:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:55:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:55:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:55:11,302 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:55:11,303 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:55:11,442 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:55:11,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:55:11,445 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:55:11,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:55:11 BoogieIcfgContainer [2023-02-16 01:55:11,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:55:11,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:55:11,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:55:11,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:55:11,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:55:10" (1/3) ... [2023-02-16 01:55:11,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1942babe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:55:11, skipping insertion in model container [2023-02-16 01:55:11,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:55:11" (2/3) ... [2023-02-16 01:55:11,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1942babe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:55:11, skipping insertion in model container [2023-02-16 01:55:11,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:55:11" (3/3) ... [2023-02-16 01:55:11,452 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2023-02-16 01:55:11,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:55:11,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:55:11,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:55:11,494 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;@5f482db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:55:11,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:55:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:55:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 01:55:11,510 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:11,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:11,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1267887399, now seen corresponding path program 1 times [2023-02-16 01:55:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:11,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069952997] [2023-02-16 01:55:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:11,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:11,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069952997] [2023-02-16 01:55:11,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 01:55:11,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083320396] [2023-02-16 01:55:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:11,629 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) [2023-02-16 01:55:11,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:55:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 01:55:11,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 01:55:11,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:55:11,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083320396] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:55:11,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:55:11,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:55:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437507293] [2023-02-16 01:55:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:11,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:55:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:55:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:55:11,754 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:55:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:11,768 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2023-02-16 01:55:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:55:11,769 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-16 01:55:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:11,774 INFO L225 Difference]: With dead ends: 53 [2023-02-16 01:55:11,774 INFO L226 Difference]: Without dead ends: 24 [2023-02-16 01:55:11,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:55:11,778 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2023-02-16 01:55:11,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:55:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-16 01:55:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-16 01:55:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:55:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-02-16 01:55:11,800 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 19 [2023-02-16 01:55:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:11,800 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-02-16 01:55:11,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:55:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-02-16 01:55:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 01:55:11,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:11,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:11,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:55:12,006 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 [2023-02-16 01:55:12,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1485611193, now seen corresponding path program 1 times [2023-02-16 01:55:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828009532] [2023-02-16 01:55:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:12,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471923361] [2023-02-16 01:55:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:12,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:12,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:12,044 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) [2023-02-16 01:55:12,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:55:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 01:55:12,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:12,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:55:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:12,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828009532] [2023-02-16 01:55:12,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:12,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471923361] [2023-02-16 01:55:12,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471923361] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:55:12,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:55:12,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:55:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757655695] [2023-02-16 01:55:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:55:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:55:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:55:12,132 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-02-16 01:55:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:12,148 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-02-16 01:55:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:55:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 21 [2023-02-16 01:55:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:12,149 INFO L225 Difference]: With dead ends: 38 [2023-02-16 01:55:12,149 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 01:55:12,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:55:12,151 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 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 [2023-02-16 01:55:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:55:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 01:55:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-16 01:55:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:55:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-02-16 01:55:12,159 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 21 [2023-02-16 01:55:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:12,161 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-02-16 01:55:12,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-02-16 01:55:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-02-16 01:55:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 01:55:12,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:12,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:12,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 01:55:12,367 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 [2023-02-16 01:55:12,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1580975129, now seen corresponding path program 1 times [2023-02-16 01:55:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:12,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253104050] [2023-02-16 01:55:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:12,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:12,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260522052] [2023-02-16 01:55:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:12,394 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) [2023-02-16 01:55:12,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:55:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:12,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:55:12,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:12,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:55:12,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253104050] [2023-02-16 01:55:12,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:12,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260522052] [2023-02-16 01:55:12,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260522052] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:55:12,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:55:12,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-16 01:55:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388022884] [2023-02-16 01:55:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:12,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 01:55:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 01:55:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:55:12,760 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:55:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:12,904 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-02-16 01:55:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 01:55:12,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-16 01:55:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:12,907 INFO L225 Difference]: With dead ends: 38 [2023-02-16 01:55:12,907 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 01:55:12,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:55:12,911 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:12,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 122 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:55:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 01:55:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-16 01:55:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:55:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-02-16 01:55:12,930 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2023-02-16 01:55:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:12,930 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-02-16 01:55:12,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:55:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-02-16 01:55:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 01:55:12,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:12,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:12,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:55:13,137 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 [2023-02-16 01:55:13,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1106421036, now seen corresponding path program 1 times [2023-02-16 01:55:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:13,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372284199] [2023-02-16 01:55:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:13,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:13,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159995620] [2023-02-16 01:55:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:13,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:13,152 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) [2023-02-16 01:55:13,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:55:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:13,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:55:13,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:13,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:55:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:13,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:13,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372284199] [2023-02-16 01:55:13,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:13,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159995620] [2023-02-16 01:55:13,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159995620] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:55:13,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:55:13,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2023-02-16 01:55:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585531831] [2023-02-16 01:55:13,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:55:13,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:55:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:55:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:55:13,238 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 01:55:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:13,254 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-02-16 01:55:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:55:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-16 01:55:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:13,255 INFO L225 Difference]: With dead ends: 49 [2023-02-16 01:55:13,255 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 01:55:13,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:55:13,257 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:13,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:55:13,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 01:55:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-16 01:55:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:55:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-02-16 01:55:13,262 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 24 [2023-02-16 01:55:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:13,263 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-02-16 01:55:13,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 01:55:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-02-16 01:55:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 01:55:13,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:13,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:13,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 01:55:13,468 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 [2023-02-16 01:55:13,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -450968108, now seen corresponding path program 1 times [2023-02-16 01:55:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205680470] [2023-02-16 01:55:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:13,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835687242] [2023-02-16 01:55:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:13,480 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) [2023-02-16 01:55:13,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:55:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:13,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 01:55:13,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:13,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:55:13,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:13,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205680470] [2023-02-16 01:55:13,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:13,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835687242] [2023-02-16 01:55:13,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835687242] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:55:13,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:55:13,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:55:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34075037] [2023-02-16 01:55:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:55:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:55:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:55:13,598 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-16 01:55:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:13,628 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-02-16 01:55:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:55:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 25 [2023-02-16 01:55:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:13,629 INFO L225 Difference]: With dead ends: 47 [2023-02-16 01:55:13,629 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 01:55:13,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:55:13,630 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:13,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 64 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:55:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 01:55:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-16 01:55:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:55:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-02-16 01:55:13,643 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2023-02-16 01:55:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:13,644 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-02-16 01:55:13,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-16 01:55:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-02-16 01:55:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 01:55:13,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:13,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:13,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 01:55:13,850 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 [2023-02-16 01:55:13,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash -452755568, now seen corresponding path program 1 times [2023-02-16 01:55:13,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:13,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253893326] [2023-02-16 01:55:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:13,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063430794] [2023-02-16 01:55:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:13,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:13,877 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) [2023-02-16 01:55:13,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:55:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 01:55:13,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:55:14,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:55:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253893326] [2023-02-16 01:55:14,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063430794] [2023-02-16 01:55:14,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063430794] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 01:55:14,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:55:14,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-02-16 01:55:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101046359] [2023-02-16 01:55:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:14,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:55:14,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:55:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-02-16 01:55:14,588 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-02-16 01:55:24,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:26,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:28,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:30,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:32,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:35,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:37,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:40,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:42,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:44,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:47,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:47,410 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-02-16 01:55:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:55:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 25 [2023-02-16 01:55:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:47,411 INFO L225 Difference]: With dead ends: 46 [2023-02-16 01:55:47,411 INFO L226 Difference]: Without dead ends: 39 [2023-02-16 01:55:47,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=53, Invalid=218, Unknown=1, NotChecked=0, Total=272 [2023-02-16 01:55:47,412 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 109 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2023-02-16 01:55:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-16 01:55:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-02-16 01:55:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:55:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-02-16 01:55:47,418 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2023-02-16 01:55:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:47,418 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-02-16 01:55:47,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-02-16 01:55:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-02-16 01:55:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 01:55:47,419 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:47,419 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:47,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:55:47,627 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 [2023-02-16 01:55:47,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:47,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash 414654869, now seen corresponding path program 1 times [2023-02-16 01:55:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:47,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514163030] [2023-02-16 01:55:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:47,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306822123] [2023-02-16 01:55:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:47,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:47,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:47,653 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) [2023-02-16 01:55:47,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:55:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 01:55:47,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:48,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:55:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514163030] [2023-02-16 01:55:49,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306822123] [2023-02-16 01:55:49,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306822123] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:55:49,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:55:49,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-02-16 01:55:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332417529] [2023-02-16 01:55:49,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:55:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 01:55:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 01:55:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:55:49,522 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:55:52,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:55,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-16 01:55:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:55,237 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2023-02-16 01:55:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 01:55:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-02-16 01:55:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:55,238 INFO L225 Difference]: With dead ends: 46 [2023-02-16 01:55:55,238 INFO L226 Difference]: Without dead ends: 28 [2023-02-16 01:55:55,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-02-16 01:55:55,239 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:55,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 166 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2023-02-16 01:55:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-16 01:55:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-16 01:55:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:55:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-16 01:55:55,243 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 27 [2023-02-16 01:55:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:55,243 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-16 01:55:55,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:55:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-16 01:55:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 01:55:55,244 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:55:55,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:55:55,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 01:55:55,453 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 [2023-02-16 01:55:55,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:55:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:55:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash -793153283, now seen corresponding path program 1 times [2023-02-16 01:55:55,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:55:55,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300366920] [2023-02-16 01:55:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:55:55,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:55:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361019813] [2023-02-16 01:55:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:55:55,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:55:55,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:55:55,481 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) [2023-02-16 01:55:55,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:55:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:55:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 01:55:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:55:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:55:55,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:55:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:55:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300366920] [2023-02-16 01:55:55,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:55:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361019813] [2023-02-16 01:55:55,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361019813] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:55:55,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:55:55,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:55:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057538790] [2023-02-16 01:55:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:55:55,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:55:55,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:55:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:55:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:55:55,526 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:55:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:55:55,532 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2023-02-16 01:55:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:55:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-16 01:55:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:55:55,533 INFO L225 Difference]: With dead ends: 28 [2023-02-16 01:55:55,533 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:55:55,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:55:55,534 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:55:55,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:55:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:55:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:55:55,534 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) [2023-02-16 01:55:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:55:55,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-02-16 01:55:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:55:55,535 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:55:55,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:55:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:55:55,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:55:55,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:55:55,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 01:55:55,742 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 [2023-02-16 01:55:55,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:56:33,537 WARN L233 SmtUtils]: Spent 37.19s on a formula simplification. DAG size of input: 53 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:57:08,802 WARN L233 SmtUtils]: Spent 35.26s on a formula simplification. DAG size of input: 57 DAG size of output: 40 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:57:10,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:57:10,464 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (and (<= 0 ~counter~0) (<= ~counter~0 0)) [2023-02-16 01:57:10,464 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (and (<= 0 ~counter~0) (< (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483647) (<= ~counter~0 0)) [2023-02-16 01:57:10,464 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-02-16 01:57:10,464 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:57:10,464 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 52) the Hoare annotation is: true [2023-02-16 01:57:10,464 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 49) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 49) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse1 (< .cse6 2147483647)) (.cse2 (<= 2 ~counter~0)) (.cse5 (mod |ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and .cse0 .cse1 .cse2 (forall ((|ULTIMATE.start_main_~b~0#1| Int)) (= .cse3 (mod (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~r~0#1|) 4294967296)))) (let ((.cse4 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (and .cse0 (< .cse4 2147483647) .cse1 (not (<= .cse4 .cse5)) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0))) (and .cse0 .cse1 .cse2 (forall ((|aux_mod_ULTIMATE.start_main_~b~0#1_45| Int)) (or (<= |aux_mod_ULTIMATE.start_main_~b~0#1_45| .cse5) (= .cse3 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |aux_mod_ULTIMATE.start_main_~b~0#1_45|)) 4294967296)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~b~0#1_45|))) (= .cse3 (mod (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~r~0#1|) 4294967296)))))) [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L895 garLoopResultBuilder]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse1 (< .cse6 2147483647)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (and .cse0 .cse1 (<= 2 ~counter~0) .cse2 .cse3 (<= 2 (let ((.cse4 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (+ .cse4 (* 8589934592 (div (+ .cse4 4294967296) 8589934592)))))) (let ((.cse5 (mod (div (- |ULTIMATE.start_main_~b~0#1|) (- 2)) 4294967296))) (and .cse0 .cse1 (<= 1 ~counter~0) .cse2 .cse3 (<= 1 .cse5) (<= ~counter~0 1) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (< .cse5 2147483647))) (and .cse0 (<= 0 ~counter~0) .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) .cse3 (<= ~counter~0 0))))) [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 40 49) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (< .cse0 2147483647)) (.cse2 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (and (<= 1 .cse0) .cse1 (<= 2 ~counter~0) (forall ((|aux_mod_ULTIMATE.start_main_~b~0#1_45| Int)) (or (<= |aux_mod_ULTIMATE.start_main_~b~0#1_45| .cse2) (= .cse3 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |aux_mod_ULTIMATE.start_main_~b~0#1_45|)) 4294967296)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~b~0#1_45|))) (= .cse3 (mod (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~r~0#1|) 4294967296)))) (and .cse1 (<= 1 ~counter~0) (not (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0))))) [2023-02-16 01:57:10,465 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (< (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483647) (<= 2 ~counter~0) (not (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-02-16 01:57:10,465 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2023-02-16 01:57:10,466 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-02-16 01:57:10,468 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:57:10,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:57:10,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,482 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,482 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,482 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:57:10 BoogieIcfgContainer [2023-02-16 01:57:10,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:57:10,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:57:10,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:57:10,493 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:57:10,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:55:11" (3/4) ... [2023-02-16 01:57:10,495 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:57:10,498 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-16 01:57:10,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 01:57:10,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-16 01:57:10,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-16 01:57:10,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:57:10,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:57:10,528 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:57:10,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:57:10,528 INFO L158 Benchmark]: Toolchain (without parser) took 119565.45ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 98.6MB in the beginning and 107.1MB in the end (delta: -8.4MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,529 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:57:10,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.47ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 87.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.70ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 85.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:57:10,529 INFO L158 Benchmark]: Boogie Preprocessor took 23.62ms. Allocated memory is still 134.2MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,530 INFO L158 Benchmark]: RCFGBuilder took 250.91ms. Allocated memory is still 134.2MB. Free memory was 84.4MB in the beginning and 74.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,530 INFO L158 Benchmark]: TraceAbstraction took 119043.96ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 73.5MB in the beginning and 109.2MB in the end (delta: -35.7MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,531 INFO L158 Benchmark]: Witness Printer took 35.57ms. Allocated memory is still 192.9MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:57:10,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.47ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 87.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.70ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 85.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.62ms. Allocated memory is still 134.2MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.91ms. Allocated memory is still 134.2MB. Free memory was 84.4MB in the beginning and 74.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 119043.96ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 73.5MB in the beginning and 109.2MB in the end (delta: -35.7MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 35.57ms. Allocated memory is still 192.9MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] * 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: 21]: 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 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 119.0s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 74.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 30.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 680 SdHoareTripleChecker+Invalid, 30.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 477 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 360 IncrementalHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 203 mSDtfsCounter, 360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 52, 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, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 38 NumberOfFragments, 330 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 711 FormulaSimplificationTreeSizeReductionInter, 74.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 259 ConstructedInterpolants, 17 QuantifiedInterpolants, 1309 SizeOfPredicates, 19 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 58/75 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: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant [2023-02-16 01:57:10,547 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,547 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,547 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,548 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,548 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] [2023-02-16 01:57:10,548 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_ULTIMATE.start_main_~b~0#1_45,QUANTIFIED] Derived loop invariant: ((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 2 <= counter) && (forall aux_mod_ULTIMATE.start_main_~b~0#1_45 : int :: (aux_mod_ULTIMATE.start_main_~b~0#1_45 <= r % 4294967296 || A % 4294967296 == (r + q * aux_mod_ULTIMATE.start_main_~b~0#1_45) % 4294967296) || 4294967296 <= aux_mod_ULTIMATE.start_main_~b~0#1_45)) && A % 4294967296 == (q * b + r) % 4294967296) || (((((B % 4294967296 < 2147483647 && 1 <= counter) && !(b % 4294967296 <= r % 4294967296)) && r == A) && b == B) && q == 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 2 <= counter) && r == A) && q == 0) && 2 <= r % 4294967296 + 8589934592 * ((r % 4294967296 + 4294967296) / 8589934592)) || ((((((((1 <= B % 4294967296 && B % 4294967296 < 2147483647) && 1 <= counter) && r == A) && q == 0) && 1 <= -b / -2 % 4294967296) && counter <= 1) && b % 2 == 0) && -b / -2 % 4294967296 < 2147483647)) || ((((((1 <= B % 4294967296 && 0 <= counter) && B % 4294967296 < 2147483647) && r == A) && b == B) && q == 0) && counter <= 0) RESULT: Ultimate proved your program to be correct! [2023-02-16 01:57:10,660 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