./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:39:09,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:39:09,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:39:09,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:39:09,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:39:09,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:39:09,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:39:09,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:39:09,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:39:09,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:39:09,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:39:09,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:39:09,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:39:09,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:39:09,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:39:09,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:39:09,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:39:09,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:39:09,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:39:09,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:39:09,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:39:09,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:39:09,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:39:09,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:39:09,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:39:09,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:39:09,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:39:09,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:39:09,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:39:09,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:39:09,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:39:09,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:39:09,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:39:09,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:39:09,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:39:09,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:39:09,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:39:09,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:39:09,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:39:09,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:39:09,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:39:09,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:39:09,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:39:09,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:39:09,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:39:09,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:39:09,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:39:09,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:39:09,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:39:09,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:39:09,741 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:39:09,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:39:09,742 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:39:09,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:39:09,744 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:39:09,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:39:09,744 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:39:09,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:39:09,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:39:09,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:39:09,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:39:09,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:39:09,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:39:09,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:39:09,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:39:09,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:39:09,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:39:09,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:39:09,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:39:09,747 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:39:09,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:39:09,747 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:39:09,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d [2023-02-18 16:39:09,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:39:09,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:39:09,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:39:09,976 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:39:09,976 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:39:09,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2023-02-18 16:39:11,206 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:39:11,381 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:39:11,382 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2023-02-18 16:39:11,397 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e44daef/7bbd96de55ad48e5924c24601f39ca19/FLAG08b3caa2d [2023-02-18 16:39:11,413 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e44daef/7bbd96de55ad48e5924c24601f39ca19 [2023-02-18 16:39:11,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:39:11,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:39:11,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:39:11,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:39:11,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:39:11,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13259c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11, skipping insertion in model container [2023-02-18 16:39:11,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:39:11,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:39:11,546 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2023-02-18 16:39:11,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:39:11,566 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:39:11,576 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2023-02-18 16:39:11,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:39:11,592 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:39:11,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11 WrapperNode [2023-02-18 16:39:11,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:39:11,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:39:11,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:39:11,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:39:11,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,623 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-02-18 16:39:11,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:39:11,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:39:11,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:39:11,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:39:11,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,657 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:39:11,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:39:11,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:39:11,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:39:11,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (1/1) ... [2023-02-18 16:39:11,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:39:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:11,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 16:39:11,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 16:39:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:39:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 16:39:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 16:39:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:39:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:39:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:39:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:39:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:39:11,762 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:39:11,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:39:11,896 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:39:11,911 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:39:11,912 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 16:39:11,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:39:11 BoogieIcfgContainer [2023-02-18 16:39:11,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:39:11,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:39:11,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:39:11,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:39:11,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:39:11" (1/3) ... [2023-02-18 16:39:11,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d074a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:39:11, skipping insertion in model container [2023-02-18 16:39:11,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:39:11" (2/3) ... [2023-02-18 16:39:11,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d074a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:39:11, skipping insertion in model container [2023-02-18 16:39:11,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:39:11" (3/3) ... [2023-02-18 16:39:11,934 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2023-02-18 16:39:11,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:39:11,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:39:12,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:39:12,028 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;@57f8c697, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:39:12,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:39:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 16:39:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 16:39:12,037 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:12,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:12,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1389076267, now seen corresponding path program 1 times [2023-02-18 16:39:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:12,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240589397] [2023-02-18 16:39:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:12,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240589397] [2023-02-18 16:39:12,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 16:39:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472118932] [2023-02-18 16:39:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:12,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:12,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:12,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:39:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 16:39:12,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 16:39:12,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:39:12,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472118932] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:39:12,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:39:12,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:39:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266931566] [2023-02-18 16:39:12,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:39:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:39:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:39:12,301 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 16:39:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:12,321 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2023-02-18 16:39:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:39:12,322 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-18 16:39:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:12,328 INFO L225 Difference]: With dead ends: 65 [2023-02-18 16:39:12,328 INFO L226 Difference]: Without dead ends: 30 [2023-02-18 16:39:12,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:39:12,334 INFO L413 NwaCegarLoop]: 43 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, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:12,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:39:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-18 16:39:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-18 16:39:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 16:39:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-02-18 16:39:12,366 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 24 [2023-02-18 16:39:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:12,366 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-02-18 16:39:12,366 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 16:39:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-02-18 16:39:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 16:39:12,368 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:12,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:12,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:12,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 16:39:12,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash 240368937, now seen corresponding path program 1 times [2023-02-18 16:39:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:12,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275648620] [2023-02-18 16:39:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:12,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:12,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:12,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574824369] [2023-02-18 16:39:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:12,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:12,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 16:39:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 16:39:12,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 16:39:12,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:39:12,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275648620] [2023-02-18 16:39:12,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574824369] [2023-02-18 16:39:12,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574824369] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:39:12,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:39:12,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 16:39:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942101097] [2023-02-18 16:39:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:12,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 16:39:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 16:39:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:39:12,760 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 16:39:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:12,866 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2023-02-18 16:39:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 16:39:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-18 16:39:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:12,867 INFO L225 Difference]: With dead ends: 41 [2023-02-18 16:39:12,868 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 16:39:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 16:39:12,869 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:12,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 133 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:39:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 16:39:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-02-18 16:39:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 16:39:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2023-02-18 16:39:12,880 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 24 [2023-02-18 16:39:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:12,880 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2023-02-18 16:39:12,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 16:39:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2023-02-18 16:39:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 16:39:12,881 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:12,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:12,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 16:39:13,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -854318377, now seen corresponding path program 1 times [2023-02-18 16:39:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652189963] [2023-02-18 16:39:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:13,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:13,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654860343] [2023-02-18 16:39:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:13,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:13,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:13,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:13,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 16:39:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:13,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 16:39:13,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 16:39:13,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:39:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 16:39:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652189963] [2023-02-18 16:39:13,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654860343] [2023-02-18 16:39:13,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654860343] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:39:13,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:39:13,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-18 16:39:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288680522] [2023-02-18 16:39:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:39:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:39:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 16:39:13,361 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:39:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:13,444 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2023-02-18 16:39:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:39:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-18 16:39:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:13,447 INFO L225 Difference]: With dead ends: 53 [2023-02-18 16:39:13,447 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 16:39:13,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 16:39:13,451 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:13,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 118 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:39:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 16:39:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-02-18 16:39:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 16:39:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-02-18 16:39:13,473 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 29 [2023-02-18 16:39:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:13,474 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-02-18 16:39:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:39:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-02-18 16:39:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 16:39:13,475 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:13,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:13,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:13,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:13,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:13,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1997084946, now seen corresponding path program 1 times [2023-02-18 16:39:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:13,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082868005] [2023-02-18 16:39:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:13,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:13,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:13,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587942173] [2023-02-18 16:39:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:13,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:13,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:13,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 16:39:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:13,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:39:13,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 16:39:13,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:39:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 16:39:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082868005] [2023-02-18 16:39:13,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587942173] [2023-02-18 16:39:13,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587942173] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:39:13,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:39:13,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-18 16:39:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106237] [2023-02-18 16:39:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:13,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:39:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:39:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:39:13,804 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 16:39:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:13,851 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2023-02-18 16:39:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:39:13,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2023-02-18 16:39:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:13,853 INFO L225 Difference]: With dead ends: 55 [2023-02-18 16:39:13,853 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 16:39:13,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:39:13,854 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:39:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 16:39:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-18 16:39:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 16:39:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2023-02-18 16:39:13,864 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 36 [2023-02-18 16:39:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:13,865 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2023-02-18 16:39:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 16:39:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-02-18 16:39:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 16:39:13,866 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:13,866 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:13,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:14,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:14,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2056573358, now seen corresponding path program 1 times [2023-02-18 16:39:14,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:14,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602832618] [2023-02-18 16:39:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:14,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:14,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:14,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965300965] [2023-02-18 16:39:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:14,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:14,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:14,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:14,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 16:39:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:14,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 16:39:14,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 16:39:14,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:39:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602832618] [2023-02-18 16:39:14,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965300965] [2023-02-18 16:39:14,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965300965] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:39:14,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:39:14,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 16:39:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119770516] [2023-02-18 16:39:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:39:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:39:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 16:39:14,173 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-18 16:39:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:14,269 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-02-18 16:39:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 16:39:14,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2023-02-18 16:39:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:14,271 INFO L225 Difference]: With dead ends: 59 [2023-02-18 16:39:14,271 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 16:39:14,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-18 16:39:14,272 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:14,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:39:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 16:39:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-18 16:39:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 16:39:14,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-02-18 16:39:14,293 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 46 [2023-02-18 16:39:14,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:14,293 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-02-18 16:39:14,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-18 16:39:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-02-18 16:39:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 16:39:14,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:14,294 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:14,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:14,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:14,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2085516536, now seen corresponding path program 1 times [2023-02-18 16:39:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:14,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559402932] [2023-02-18 16:39:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:14,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:14,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925958608] [2023-02-18 16:39:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:14,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:14,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 16:39:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:14,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 16:39:14,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-18 16:39:14,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:39:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-18 16:39:14,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559402932] [2023-02-18 16:39:14,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925958608] [2023-02-18 16:39:14,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925958608] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:39:14,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:39:14,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-18 16:39:14,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501059005] [2023-02-18 16:39:14,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:39:14,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 16:39:14,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 16:39:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 16:39:14,724 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-18 16:39:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:14,894 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2023-02-18 16:39:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 16:39:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 52 [2023-02-18 16:39:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:14,896 INFO L225 Difference]: With dead ends: 75 [2023-02-18 16:39:14,897 INFO L226 Difference]: Without dead ends: 73 [2023-02-18 16:39:14,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-18 16:39:14,898 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:14,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 158 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:39:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-18 16:39:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2023-02-18 16:39:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 16:39:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-02-18 16:39:14,908 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 52 [2023-02-18 16:39:14,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:14,909 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-02-18 16:39:14,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-18 16:39:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-02-18 16:39:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 16:39:14,910 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:39:14,911 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:14,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:15,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:15,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:39:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:39:15,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1724367982, now seen corresponding path program 1 times [2023-02-18 16:39:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:39:15,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624348591] [2023-02-18 16:39:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:39:15,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:39:15,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109857203] [2023-02-18 16:39:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:39:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:39:15,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:39:15,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 16:39:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:39:15,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 16:39:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:39:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-18 16:39:15,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:39:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-02-18 16:39:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:39:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624348591] [2023-02-18 16:39:15,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:39:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109857203] [2023-02-18 16:39:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109857203] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:39:15,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:39:15,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-02-18 16:39:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504919610] [2023-02-18 16:39:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:39:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:39:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:39:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:39:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-18 16:39:15,399 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 16:39:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:39:15,636 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-02-18 16:39:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:39:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2023-02-18 16:39:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:39:15,637 INFO L225 Difference]: With dead ends: 61 [2023-02-18 16:39:15,637 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 16:39:15,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-18 16:39:15,638 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 16:39:15,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 85 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 16:39:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 16:39:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 16:39:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:39:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 16:39:15,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2023-02-18 16:39:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:39:15,639 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 16:39:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 16:39:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 16:39:15,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 16:39:15,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:39:15,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 16:39:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:39:15,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 16:39:15,862 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2023-02-18 16:39:15,862 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-02-18 16:39:15,863 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-18 16:39:15,863 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-18 16:39:15,863 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse5)) .cse6 .cse7) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse7)) .cse6 .cse7))) [2023-02-18 16:39:15,863 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse5)) .cse6 .cse7) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse7)) .cse6 .cse7))) [2023-02-18 16:39:15,863 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 66) the Hoare annotation is: true [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 16:39:15,864 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse5)) .cse6 .cse7) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse7)) .cse6 .cse7))) [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 16:39:15,864 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-02-18 16:39:15,864 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 100) (>= |ULTIMATE.start_main_~y~0#1| 0)) [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2023-02-18 16:39:15,864 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 16:39:15,865 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0) .cse4 .cse5))) [2023-02-18 16:39:15,865 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse0 (let ((.cse3 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse4 (>= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse3 (= |ULTIMATE.start_main_~a~0#1| 0) .cse4 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse3 .cse4 .cse2)))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) .cse2 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse0 .cse1)))) [2023-02-18 16:39:15,865 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (and (<= |ULTIMATE.start_main_~y~0#1| 100) (>= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) (>= |ULTIMATE.start_main_~y~0#1| 1) (>= |ULTIMATE.start_main_~r~0#1| 0) (>= |ULTIMATE.start_main_~r~0#1| (* 2 .cse0)) (= |ULTIMATE.start_main_~b~0#1| .cse0) (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) [2023-02-18 16:39:15,865 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2023-02-18 16:39:15,865 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse4 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse7 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse5)) .cse6 .cse7) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse7)) .cse6 .cse7))) [2023-02-18 16:39:15,865 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2023-02-18 16:39:15,865 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse1 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0) .cse4 .cse5))) [2023-02-18 16:39:15,866 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (>= |ULTIMATE.start_main_~y~0#1| 1))) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|)))) .cse0 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~y~0#1| 100)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse1 (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse0 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse1 .cse2 .cse0))) (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:39:15,866 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-18 16:39:15,866 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 16:39:15,869 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:39:15,870 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:39:15,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:39:15 BoogieIcfgContainer [2023-02-18 16:39:15,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:39:15,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:39:15,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:39:15,886 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:39:15,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:39:11" (3/4) ... [2023-02-18 16:39:15,889 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 16:39:15,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-18 16:39:15,894 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 16:39:15,897 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-18 16:39:15,897 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 16:39:15,897 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 16:39:15,897 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:39:15,928 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:39:15,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:39:15,929 INFO L158 Benchmark]: Toolchain (without parser) took 4511.98ms. Allocated memory is still 228.6MB. Free memory was 183.6MB in the beginning and 132.8MB in the end (delta: 50.8MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,929 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:39:15,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.18ms. Allocated memory is still 228.6MB. Free memory was 182.8MB in the beginning and 173.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.84ms. Allocated memory is still 228.6MB. Free memory was 172.3MB in the beginning and 171.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,930 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 228.6MB. Free memory was 171.0MB in the beginning and 169.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:39:15,930 INFO L158 Benchmark]: RCFGBuilder took 254.61ms. Allocated memory is still 228.6MB. Free memory was 169.7MB in the beginning and 159.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,931 INFO L158 Benchmark]: TraceAbstraction took 3969.57ms. Allocated memory is still 228.6MB. Free memory was 158.4MB in the beginning and 136.0MB in the end (delta: 22.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,931 INFO L158 Benchmark]: Witness Printer took 42.74ms. Allocated memory is still 228.6MB. Free memory was 136.0MB in the beginning and 132.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 16:39:15,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.18ms. Allocated memory is still 228.6MB. Free memory was 182.8MB in the beginning and 173.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.84ms. Allocated memory is still 228.6MB. Free memory was 172.3MB in the beginning and 171.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 228.6MB. Free memory was 171.0MB in the beginning and 169.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.61ms. Allocated memory is still 228.6MB. Free memory was 169.7MB in the beginning and 159.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3969.57ms. Allocated memory is still 228.6MB. Free memory was 158.4MB in the beginning and 136.0MB in the end (delta: 22.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Witness Printer took 42.74ms. Allocated memory is still 228.6MB. Free memory was 136.0MB in the beginning and 132.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 754 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 661 IncrementalHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 226 mSDtfsCounter, 661 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=6, InterpolantAutomatonStates: 46, 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, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 39 PreInvPairs, 58 NumberOfFragments, 895 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 1259 SizeOfPredicates, 37 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 419/434 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((y <= 100 && y >= 0) && 1 <= r) && y >= 1) && r >= 0) && b == y * a) || ((((y <= 100 && y >= 0) && 1 <= r) && y >= 1) && b == y * a)) && x == (q + a) * y + (r + -b)) && x == q * y + r) || (((((((((y <= 100 && y >= 0) && 1 <= r) && y >= 1) && r >= 0) && b == y * a) && x == q * y + r) || (((((y <= 100 && y >= 0) && 1 <= r) && y >= 1) && b == y * a) && x == q * y + r)) && x == (q + a) * y + (r + -b)) && x == q * y + r) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((y <= 100 && y >= 0) && x == (q + a) * y + (r + -b)) && y >= 1) && b == y * a) && x == q * y + r) || (((((((y <= 100 && a == 0) && y >= 0) && x == (q + a) * y + (r + -b)) && y >= 1) && b == 0) && b == y * a) && x == q * y + r) RESULT: Ultimate proved your program to be correct! [2023-02-18 16:39:15,965 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