./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.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/sqrt1-ll_unwindbound100.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 aeeaf8ddcaaadce0bb307be8d4cdfb2d28179f7ce6737573dce6c1be4b061da1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 07:58:01,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 07:58:01,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 07:58:01,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 07:58:01,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 07:58:01,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 07:58:01,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 07:58:01,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 07:58:01,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 07:58:01,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 07:58:01,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 07:58:01,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 07:58:01,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 07:58:01,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 07:58:01,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 07:58:01,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 07:58:01,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 07:58:01,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 07:58:01,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 07:58:01,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 07:58:01,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 07:58:01,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 07:58:01,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 07:58:01,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 07:58:01,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 07:58:01,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 07:58:01,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 07:58:01,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 07:58:01,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 07:58:01,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 07:58:01,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 07:58:01,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 07:58:01,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 07:58:01,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 07:58:01,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 07:58:01,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 07:58:01,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 07:58:01,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 07:58:01,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 07:58:01,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 07:58:01,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 07:58:01,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 07:58:01,694 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 07:58:01,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 07:58:01,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 07:58:01,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 07:58:01,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 07:58:01,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 07:58:01,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 07:58:01,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 07:58:01,697 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 07:58:01,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 07:58:01,698 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 07:58:01,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 07:58:01,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 07:58:01,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 07:58:01,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 07:58:01,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 07:58:01,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 07:58:01,699 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 07:58:01,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 07:58:01,700 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 07:58:01,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 07:58:01,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 07:58:01,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 07:58:01,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 07:58:01,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:58:01,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 07:58:01,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 07:58:01,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 07:58:01,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 07:58:01,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 07:58:01,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 07:58:01,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 07:58:01,702 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 07:58:01,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 07:58:01,703 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 07:58:01,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeeaf8ddcaaadce0bb307be8d4cdfb2d28179f7ce6737573dce6c1be4b061da1 [2023-02-17 07:58:01,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 07:58:01,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 07:58:01,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 07:58:01,972 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 07:58:01,972 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 07:58:01,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2023-02-17 07:58:03,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 07:58:03,341 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 07:58:03,341 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2023-02-17 07:58:03,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed42f058f/5d575b914c534ddcb3e010abac0a3c28/FLAGb512a5d51 [2023-02-17 07:58:03,358 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed42f058f/5d575b914c534ddcb3e010abac0a3c28 [2023-02-17 07:58:03,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 07:58:03,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 07:58:03,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 07:58:03,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 07:58:03,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 07:58:03,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e42ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03, skipping insertion in model container [2023-02-17 07:58:03,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 07:58:03,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 07:58:03,491 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/sqrt1-ll_unwindbound100.c[520,533] [2023-02-17 07:58:03,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:58:03,519 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 07:58:03,528 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/sqrt1-ll_unwindbound100.c[520,533] [2023-02-17 07:58:03,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:58:03,544 INFO L208 MainTranslator]: Completed translation [2023-02-17 07:58:03,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03 WrapperNode [2023-02-17 07:58:03,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 07:58:03,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 07:58:03,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 07:58:03,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 07:58:03,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,572 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-02-17 07:58:03,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 07:58:03,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 07:58:03,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 07:58:03,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 07:58:03,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 07:58:03,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 07:58:03,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 07:58:03,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 07:58:03,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (1/1) ... [2023-02-17 07:58:03,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:58:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:58:03,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 07:58:03,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 07:58:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 07:58:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 07:58:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 07:58:03,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 07:58:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 07:58:03,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 07:58:03,716 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 07:58:03,718 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 07:58:03,809 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 07:58:03,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 07:58:03,814 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 07:58:03,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:58:03 BoogieIcfgContainer [2023-02-17 07:58:03,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 07:58:03,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 07:58:03,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 07:58:03,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 07:58:03,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 07:58:03" (1/3) ... [2023-02-17 07:58:03,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeabc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:58:03, skipping insertion in model container [2023-02-17 07:58:03,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:58:03" (2/3) ... [2023-02-17 07:58:03,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeabc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:58:03, skipping insertion in model container [2023-02-17 07:58:03,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:58:03" (3/3) ... [2023-02-17 07:58:03,824 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound100.c [2023-02-17 07:58:03,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 07:58:03,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 07:58:03,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 07:58:03,887 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;@80fa15c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 07:58:03,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 07:58:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 07:58:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 07:58:03,894 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:03,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:03,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2023-02-17 07:58:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:03,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647590657] [2023-02-17 07:58:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:03,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:58:04,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:04,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647590657] [2023-02-17 07:58:04,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647590657] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:58:04,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:58:04,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 07:58:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778347894] [2023-02-17 07:58:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:58:04,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 07:58:04,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 07:58:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 07:58:04,052 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:04,069 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2023-02-17 07:58:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 07:58:04,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 07:58:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:04,076 INFO L225 Difference]: With dead ends: 40 [2023-02-17 07:58:04,076 INFO L226 Difference]: Without dead ends: 17 [2023-02-17 07:58:04,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 07:58:04,081 INFO L413 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:04,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:58:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-17 07:58:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-17 07:58:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 07:58:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-02-17 07:58:04,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2023-02-17 07:58:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-02-17 07:58:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-02-17 07:58:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 07:58:04,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:04,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 07:58:04,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:04,131 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2023-02-17 07:58:04,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:04,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477412072] [2023-02-17 07:58:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:58:04,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:04,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477412072] [2023-02-17 07:58:04,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477412072] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:58:04,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:58:04,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 07:58:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432713163] [2023-02-17 07:58:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:58:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 07:58:04,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 07:58:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 07:58:04,315 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:04,348 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-17 07:58:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 07:58:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 07:58:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:04,349 INFO L225 Difference]: With dead ends: 28 [2023-02-17 07:58:04,350 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 07:58:04,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 07:58:04,351 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:04,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:58:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 07:58:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 07:58:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 07:58:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-02-17 07:58:04,357 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2023-02-17 07:58:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:04,357 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-02-17 07:58:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-02-17 07:58:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 07:58:04,358 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:04,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 07:58:04,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2023-02-17 07:58:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495234556] [2023-02-17 07:58:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:58:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495234556] [2023-02-17 07:58:04,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495234556] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:58:04,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:58:04,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 07:58:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027462790] [2023-02-17 07:58:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:58:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 07:58:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 07:58:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 07:58:04,450 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:04,519 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2023-02-17 07:58:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 07:58:04,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 07:58:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:04,520 INFO L225 Difference]: With dead ends: 32 [2023-02-17 07:58:04,520 INFO L226 Difference]: Without dead ends: 30 [2023-02-17 07:58:04,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 07:58:04,522 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:04,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:58:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-17 07:58:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-02-17 07:58:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 07:58:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-02-17 07:58:04,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 8 [2023-02-17 07:58:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:04,536 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-02-17 07:58:04,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 07:58:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-02-17 07:58:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 07:58:04,537 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:04,537 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:04,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 07:58:04,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1242689983, now seen corresponding path program 1 times [2023-02-17 07:58:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:04,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483510959] [2023-02-17 07:58:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:04,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:58:04,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531822295] [2023-02-17 07:58:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:04,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:58:04,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 07:58:04,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 07:58:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:04,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 07:58:04,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:58:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:58:04,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:58:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 07:58:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483510959] [2023-02-17 07:58:04,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:58:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531822295] [2023-02-17 07:58:04,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531822295] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 07:58:04,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 07:58:04,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-17 07:58:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557708006] [2023-02-17 07:58:04,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 07:58:04,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 07:58:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 07:58:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-17 07:58:04,889 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:58:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:05,005 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2023-02-17 07:58:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 07:58:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-02-17 07:58:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:05,007 INFO L225 Difference]: With dead ends: 40 [2023-02-17 07:58:05,008 INFO L226 Difference]: Without dead ends: 35 [2023-02-17 07:58:05,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-17 07:58:05,009 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 42 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 07:58:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-17 07:58:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-02-17 07:58:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 07:58:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-02-17 07:58:05,019 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2023-02-17 07:58:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:05,020 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-02-17 07:58:05,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 07:58:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-02-17 07:58:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 07:58:05,021 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:05,021 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:05,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 07:58:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:05,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash 259746456, now seen corresponding path program 1 times [2023-02-17 07:58:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:05,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519466488] [2023-02-17 07:58:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:05,236 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:58:05,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556564638] [2023-02-17 07:58:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:05,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:58:05,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 07:58:05,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 07:58:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 07:58:05,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:58:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 07:58:05,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:58:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 07:58:05,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:05,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519466488] [2023-02-17 07:58:05,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:58:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556564638] [2023-02-17 07:58:05,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556564638] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 07:58:05,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 07:58:05,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-17 07:58:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706944302] [2023-02-17 07:58:05,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 07:58:05,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 07:58:05,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 07:58:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-17 07:58:05,353 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 07:58:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:05,472 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2023-02-17 07:58:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 07:58:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-02-17 07:58:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:05,477 INFO L225 Difference]: With dead ends: 88 [2023-02-17 07:58:05,477 INFO L226 Difference]: Without dead ends: 75 [2023-02-17 07:58:05,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-17 07:58:05,481 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:05,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 07:58:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-17 07:58:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-02-17 07:58:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-17 07:58:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2023-02-17 07:58:05,503 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 26 [2023-02-17 07:58:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:05,504 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2023-02-17 07:58:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-17 07:58:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2023-02-17 07:58:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 07:58:05,505 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:05,505 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:05,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 07:58:05,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:05,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash 261414752, now seen corresponding path program 1 times [2023-02-17 07:58:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706932337] [2023-02-17 07:58:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:05,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:05,719 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:58:05,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401137582] [2023-02-17 07:58:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:05,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:58:05,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 07:58:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 07:58:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:58:05,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 07:58:05,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:58:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 07:58:05,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:58:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 07:58:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706932337] [2023-02-17 07:58:05,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:58:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401137582] [2023-02-17 07:58:05,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401137582] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 07:58:05,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 07:58:05,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-02-17 07:58:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943072612] [2023-02-17 07:58:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:58:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 07:58:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 07:58:05,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-17 07:58:05,824 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 07:58:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:05,870 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2023-02-17 07:58:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 07:58:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-02-17 07:58:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:05,873 INFO L225 Difference]: With dead ends: 85 [2023-02-17 07:58:05,873 INFO L226 Difference]: Without dead ends: 83 [2023-02-17 07:58:05,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-17 07:58:05,876 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:05,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:58:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-17 07:58:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-02-17 07:58:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.14) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-17 07:58:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2023-02-17 07:58:05,911 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 26 [2023-02-17 07:58:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:05,912 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2023-02-17 07:58:05,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 07:58:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2023-02-17 07:58:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 07:58:05,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:58:05,916 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 07:58:05,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 07:58:06,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:06,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:58:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:58:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash 854826784, now seen corresponding path program 2 times [2023-02-17 07:58:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:58:06,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478432658] [2023-02-17 07:58:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:58:06,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:58:06,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:58:06,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567477437] [2023-02-17 07:58:06,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 07:58:06,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:06,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:58:06,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 07:58:06,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 07:58:06,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 07:58:06,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 07:58:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-17 07:58:06,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:58:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 07:58:06,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:58:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 07:58:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:58:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478432658] [2023-02-17 07:58:06,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:58:06,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567477437] [2023-02-17 07:58:06,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567477437] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 07:58:06,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 07:58:06,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-17 07:58:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239977237] [2023-02-17 07:58:06,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 07:58:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 07:58:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:58:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 07:58:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-17 07:58:06,351 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-17 07:58:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:58:06,573 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-02-17 07:58:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 07:58:06,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2023-02-17 07:58:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:58:06,574 INFO L225 Difference]: With dead ends: 83 [2023-02-17 07:58:06,574 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 07:58:06,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-17 07:58:06,582 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 07:58:06,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 07:58:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 07:58:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 07:58:06,583 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) [2023-02-17 07:58:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 07:58:06,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-02-17 07:58:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:58:06,584 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 07:58:06,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-17 07:58:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 07:58:06,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 07:58:06,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 07:58:06,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 07:58:06,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:58:06,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 07:58:06,811 INFO L899 garLoopResultBuilder]: For program point L33(lines 30 42) no Hoare annotation was computed. [2023-02-17 07:58:06,811 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 07:58:06,812 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse3)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse4 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (let ((.cse2 (+ .cse3 1))) (and (= 1 .cse2) (= .cse2 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse0 .cse4 .cse1 (< ~counter~0 100)) (and .cse0 .cse4 .cse1))))) [2023-02-17 07:58:06,812 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse4 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse0 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse3))) (.cse1 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (or (and .cse0 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse1 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (let ((.cse2 (+ .cse3 1))) (and (= 1 .cse2) (= .cse2 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse0 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse4 .cse0 .cse1) (and .cse4 .cse0 .cse1 (< ~counter~0 100))))) [2023-02-17 07:58:06,812 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-17 07:58:06,813 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (let ((.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse0 (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|)))) (.cse1 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse3 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse3 .cse3))))) (or (and .cse0 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse1 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse2 .cse0 .cse1) (and (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1)) (and .cse2 .cse0 .cse1 (< ~counter~0 100)))) [2023-02-17 07:58:06,813 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 07:58:06,813 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 49) the Hoare annotation is: true [2023-02-17 07:58:06,813 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse4 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse0 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse3))) (.cse1 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (or (and .cse0 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse1 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (let ((.cse2 (+ .cse3 1))) (and (= 1 .cse2) (= .cse2 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse0 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse4 .cse0 .cse1) (and .cse4 .cse0 .cse1 (< ~counter~0 100))))) [2023-02-17 07:58:06,814 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 07:58:06,814 INFO L899 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2023-02-17 07:58:06,814 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 07:58:06,814 INFO L895 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse4 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse4)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (<= (+ ~counter~0 (- 1)) 0) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse0 .cse2 .cse1 (< ~counter~0 99)) (and .cse0 .cse2 .cse1 (< ~counter~0 100)) (let ((.cse3 (+ .cse4 1))) (and (= 1 .cse3) (= .cse3 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= ~counter~0 0) (= ~counter~0 0))) (and .cse0 .cse2 .cse1))))) [2023-02-17 07:58:06,815 INFO L895 garLoopResultBuilder]: At program point L30-4(lines 30 42) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse3)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse4 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (let ((.cse2 (+ .cse3 1))) (and (= 1 .cse2) (= .cse2 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1))) (and .cse0 .cse4 .cse1 (< ~counter~0 100)) (and .cse0 .cse4 .cse1))))) [2023-02-17 07:58:06,815 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse0 (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|)))) (.cse1 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse3 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse3 .cse3))))) (or (and .cse0 (< ~counter~0 99) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse1 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse2 .cse0 .cse1) (and .cse2 .cse0 .cse1 (< ~counter~0 100)) (and (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2023-02-17 07:58:06,815 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-17 07:58:06,815 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-17 07:58:06,815 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-17 07:58:06,815 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-17 07:58:06,816 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: (let ((.cse2 (<= (+ ~counter~0 (- 1)) 0)) (.cse0 (= |__VERIFIER_assert_#in~cond| 1)) (.cse8 (< ~counter~0 100)) (.cse3 (= 0 |__VERIFIER_assert_#in~cond|)) (.cse7 (< ~counter~0 99))) (let ((.cse6 (not .cse7)) (.cse1 (not .cse3)) (.cse9 (not .cse8)) (.cse4 (not .cse0)) (.cse5 (not .cse2))) (and (or (and .cse0 .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse6 .cse4 (and .cse0 .cse7)) (or .cse3 (and .cse1 .cse8) .cse9) (or .cse3 .cse6 (and .cse1 .cse7)) (or .cse4 .cse9 (and .cse0 .cse8)) (or .cse4 .cse5 (and .cse0 .cse2))))) [2023-02-17 07:58:06,816 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-17 07:58:06,819 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-17 07:58:06,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 07:58:06,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 07:58:06 BoogieIcfgContainer [2023-02-17 07:58:06,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 07:58:06,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 07:58:06,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 07:58:06,843 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 07:58:06,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:58:03" (3/4) ... [2023-02-17 07:58:06,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 07:58:06,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 07:58:06,855 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-17 07:58:06,855 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 07:58:06,855 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 07:58:06,856 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 07:58:06,882 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 07:58:06,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 07:58:06,883 INFO L158 Benchmark]: Toolchain (without parser) took 3521.23ms. Allocated memory is still 140.5MB. Free memory was 101.1MB in the beginning and 109.0MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:58:06,883 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:58:06,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.65ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 90.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:58:06,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.16ms. Allocated memory is still 140.5MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:58:06,884 INFO L158 Benchmark]: Boogie Preprocessor took 14.64ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 88.1MB in the end (delta: 908.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:58:06,884 INFO L158 Benchmark]: RCFGBuilder took 228.78ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 78.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:58:06,884 INFO L158 Benchmark]: TraceAbstraction took 3022.99ms. Allocated memory is still 140.5MB. Free memory was 77.6MB in the beginning and 112.2MB in the end (delta: -34.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-02-17 07:58:06,885 INFO L158 Benchmark]: Witness Printer took 39.88ms. Allocated memory is still 140.5MB. Free memory was 112.2MB in the beginning and 109.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:58:06,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.65ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 90.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.16ms. Allocated memory is still 140.5MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.64ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 88.1MB in the end (delta: 908.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.78ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 78.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3022.99ms. Allocated memory is still 140.5MB. Free memory was 77.6MB in the beginning and 112.2MB in the end (delta: -34.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 39.88ms. Allocated memory is still 140.5MB. Free memory was 112.2MB in the beginning and 109.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 467 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 312 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 155 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 44 PreInvPairs, 74 NumberOfFragments, 1144 HoareAnnotationTreeSize, 44 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 970 SizeOfPredicates, 11 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 156/196 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && t == 1 + 2 * a) && t == 2 + 1) && counter + -1 <= 0) && s + t * -1 == 1) || ((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a) && counter < 99)) || ((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a) && counter < 100)) || (((((((1 == 2 * a + 1 && 2 * a + 1 == t) && t == 1) && a == 0) && t == 1 + 2 * a) && s == 1) && counter <= 0) && counter == 0)) || (((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a) RESULT: Ultimate proved your program to be correct! [2023-02-17 07:58:06,909 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