./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:10:42,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:10:42,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:10:42,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:10:42,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:10:42,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:10:42,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:10:42,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:10:42,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:10:42,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:10:42,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:10:42,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:10:42,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:10:42,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:10:42,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:10:42,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:10:42,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:10:42,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:10:42,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:10:42,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:10:42,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:10:42,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:10:42,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:10:42,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:10:42,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:10:42,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:10:42,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:10:42,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:10:42,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:10:42,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:10:42,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:10:42,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:10:42,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:10:42,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:10:42,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:10:42,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:10:42,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:10:42,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:10:42,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:10:42,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:10:42,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:10:42,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:10:42,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:10:42,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:10:42,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:10:42,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:10:42,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:10:42,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:10:42,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:10:42,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:10:42,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:10:42,398 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:10:42,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:10:42,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:10:42,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:10:42,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:10:42,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:10:42,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:10:42,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:10:42,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:10:42,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:10:42,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:10:42,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:10:42,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:10:42,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2022-07-21 03:10:42,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:10:42,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:10:42,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:10:42,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:10:42,673 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:10:42,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2022-07-21 03:10:42,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee54ea8f/aeddb70e6dc543349fe256edcbafbfcd/FLAG72134dac0 [2022-07-21 03:10:43,046 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:10:43,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2022-07-21 03:10:43,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee54ea8f/aeddb70e6dc543349fe256edcbafbfcd/FLAG72134dac0 [2022-07-21 03:10:43,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee54ea8f/aeddb70e6dc543349fe256edcbafbfcd [2022-07-21 03:10:43,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:10:43,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:10:43,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:10:43,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:10:43,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:10:43,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4d64a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43, skipping insertion in model container [2022-07-21 03:10:43,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:10:43,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:10:43,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2022-07-21 03:10:43,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:10:43,580 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:10:43,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2022-07-21 03:10:43,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:10:43,603 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:10:43,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43 WrapperNode [2022-07-21 03:10:43,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:10:43,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:10:43,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:10:43,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:10:43,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,641 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-07-21 03:10:43,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:10:43,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:10:43,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:10:43,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:10:43,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:10:43,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:10:43,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:10:43,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:10:43,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (1/1) ... [2022-07-21 03:10:43,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:10:43,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:43,694 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) [2022-07-21 03:10:43,702 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 [2022-07-21 03:10:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:10:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:10:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:10:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:10:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:10:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:10:43,763 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:10:43,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:10:43,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:10:43,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:10:43,912 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 03:10:43,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:10:43 BoogieIcfgContainer [2022-07-21 03:10:43,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:10:43,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:10:43,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:10:43,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:10:43,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:10:43" (1/3) ... [2022-07-21 03:10:43,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc4dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:10:43, skipping insertion in model container [2022-07-21 03:10:43,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:10:43" (2/3) ... [2022-07-21 03:10:43,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc4dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:10:43, skipping insertion in model container [2022-07-21 03:10:43,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:10:43" (3/3) ... [2022-07-21 03:10:43,918 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2022-07-21 03:10:43,938 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:10:43,943 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:10:43,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:10:44,002 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6564b977, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@306f0f6a [2022-07-21 03:10:44,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:10:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:10:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 03:10:44,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:44,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:44,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2022-07-21 03:10:44,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:44,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604423466] [2022-07-21 03:10:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:10:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:44,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604423466] [2022-07-21 03:10:44,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604423466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:44,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:44,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:10:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911765736] [2022-07-21 03:10:44,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:44,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:10:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:10:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:10:44,164 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:44,184 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2022-07-21 03:10:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:10:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-21 03:10:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:44,192 INFO L225 Difference]: With dead ends: 55 [2022-07-21 03:10:44,192 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 03:10:44,195 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 [2022-07-21 03:10:44,198 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:44,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 03:10:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 03:10:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:10:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-07-21 03:10:44,239 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-07-21 03:10:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:44,239 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-07-21 03:10:44,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-07-21 03:10:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 03:10:44,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:44,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:44,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:10:44,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2022-07-21 03:10:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:44,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113774754] [2022-07-21 03:10:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:10:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:44,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113774754] [2022-07-21 03:10:44,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113774754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:44,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:44,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 03:10:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046178884] [2022-07-21 03:10:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 03:10:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 03:10:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 03:10:44,305 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:44,331 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-07-21 03:10:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 03:10:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 03:10:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:44,332 INFO L225 Difference]: With dead ends: 34 [2022-07-21 03:10:44,333 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 03:10:44,333 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 [2022-07-21 03:10:44,335 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:44,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 03:10:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 03:10:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:10:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-21 03:10:44,344 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2022-07-21 03:10:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:44,344 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-21 03:10:44,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-21 03:10:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 03:10:44,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:44,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 03:10:44,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2022-07-21 03:10:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93360440] [2022-07-21 03:10:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:44,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:44,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140929899] [2022-07-21 03:10:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:44,365 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) [2022-07-21 03:10:44,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:10:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:44,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 03:10:44,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:10:44,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:10:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:44,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93360440] [2022-07-21 03:10:44,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:44,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140929899] [2022-07-21 03:10:44,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140929899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:44,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:44,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:10:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699752150] [2022-07-21 03:10:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:10:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:10:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:10:44,476 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:44,508 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-07-21 03:10:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:10:44,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 03:10:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:44,510 INFO L225 Difference]: With dead ends: 37 [2022-07-21 03:10:44,510 INFO L226 Difference]: Without dead ends: 35 [2022-07-21 03:10:44,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:10:44,511 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:44,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-21 03:10:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-07-21 03:10:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:10:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-21 03:10:44,518 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2022-07-21 03:10:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:44,518 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-21 03:10:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-21 03:10:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 03:10:44,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:44,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:44,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:44,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2022-07-21 03:10:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:44,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605008164] [2022-07-21 03:10:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:44,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797880955] [2022-07-21 03:10:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:44,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:44,747 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) [2022-07-21 03:10:44,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:10:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 03:10:44,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:10:44,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:10:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:44,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605008164] [2022-07-21 03:10:44,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:44,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797880955] [2022-07-21 03:10:44,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797880955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:44,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:44,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:10:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393782952] [2022-07-21 03:10:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:44,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:10:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:10:44,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:10:44,815 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:10:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:44,877 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-07-21 03:10:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:10:44,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-21 03:10:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:44,880 INFO L225 Difference]: With dead ends: 50 [2022-07-21 03:10:44,880 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 03:10:44,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:10:44,882 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:44,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 03:10:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-07-21 03:10:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-21 03:10:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-07-21 03:10:44,894 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2022-07-21 03:10:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:44,895 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-07-21 03:10:44,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:10:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-07-21 03:10:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 03:10:44,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:44,897 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:44,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 03:10:45,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2022-07-21 03:10:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283241188] [2022-07-21 03:10:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:45,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:45,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515632335] [2022-07-21 03:10:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:45,119 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) [2022-07-21 03:10:45,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:10:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:45,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 03:10:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:10:45,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:10:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283241188] [2022-07-21 03:10:45,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515632335] [2022-07-21 03:10:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515632335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:45,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:10:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793271805] [2022-07-21 03:10:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:10:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:45,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:10:45,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:10:45,197 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:10:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:45,247 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2022-07-21 03:10:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:10:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-21 03:10:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:45,250 INFO L225 Difference]: With dead ends: 75 [2022-07-21 03:10:45,250 INFO L226 Difference]: Without dead ends: 73 [2022-07-21 03:10:45,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:10:45,251 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:45,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-21 03:10:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-07-21 03:10:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 03:10:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2022-07-21 03:10:45,260 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 23 [2022-07-21 03:10:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:45,260 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2022-07-21 03:10:45,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:10:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2022-07-21 03:10:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 03:10:45,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:45,260 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:45,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:45,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:45,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:45,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2022-07-21 03:10:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656445228] [2022-07-21 03:10:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:45,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:45,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394495013] [2022-07-21 03:10:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:45,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:45,493 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) [2022-07-21 03:10:45,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 03:10:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:45,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 03:10:45,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:10:45,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:10:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656445228] [2022-07-21 03:10:45,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394495013] [2022-07-21 03:10:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394495013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:45,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:45,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 03:10:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538479944] [2022-07-21 03:10:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:45,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:10:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:10:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:10:45,598 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:10:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:45,624 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2022-07-21 03:10:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:10:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-07-21 03:10:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:45,628 INFO L225 Difference]: With dead ends: 105 [2022-07-21 03:10:45,628 INFO L226 Difference]: Without dead ends: 70 [2022-07-21 03:10:45,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:10:45,631 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:45,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-21 03:10:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-21 03:10:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 03:10:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2022-07-21 03:10:45,639 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 26 [2022-07-21 03:10:45,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:45,640 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2022-07-21 03:10:45,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:10:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2022-07-21 03:10:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 03:10:45,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:45,640 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:45,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:45,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:45,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2022-07-21 03:10:45,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:45,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910603210] [2022-07-21 03:10:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:45,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:45,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197886629] [2022-07-21 03:10:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:45,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:45,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:45,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:10:45,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 03:10:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:45,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:10:45,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 03:10:45,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:10:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910603210] [2022-07-21 03:10:45,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197886629] [2022-07-21 03:10:45,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197886629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:10:45,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:10:45,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 03:10:45,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133290125] [2022-07-21 03:10:45,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:10:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 03:10:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 03:10:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 03:10:45,931 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 03:10:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:46,005 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2022-07-21 03:10:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 03:10:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-21 03:10:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:46,008 INFO L225 Difference]: With dead ends: 76 [2022-07-21 03:10:46,008 INFO L226 Difference]: Without dead ends: 74 [2022-07-21 03:10:46,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 03:10:46,009 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:46,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:10:46,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-21 03:10:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-21 03:10:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 03:10:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2022-07-21 03:10:46,016 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 33 [2022-07-21 03:10:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:46,016 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2022-07-21 03:10:46,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 03:10:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2022-07-21 03:10:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 03:10:46,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:46,017 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:46,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:46,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:46,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2022-07-21 03:10:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898175817] [2022-07-21 03:10:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:46,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:46,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114360996] [2022-07-21 03:10:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:46,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:46,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:10:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 03:10:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:46,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:10:46,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:10:46,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:10:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:10:46,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898175817] [2022-07-21 03:10:46,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:46,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114360996] [2022-07-21 03:10:46,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114360996] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:10:46,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:10:46,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-21 03:10:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851067689] [2022-07-21 03:10:46,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:10:46,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 03:10:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 03:10:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 03:10:46,403 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 03:10:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:46,504 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2022-07-21 03:10:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 03:10:46,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2022-07-21 03:10:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:46,507 INFO L225 Difference]: With dead ends: 80 [2022-07-21 03:10:46,507 INFO L226 Difference]: Without dead ends: 78 [2022-07-21 03:10:46,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-21 03:10:46,508 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:46,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 79 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:10:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-21 03:10:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-21 03:10:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 03:10:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-07-21 03:10:46,527 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 39 [2022-07-21 03:10:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:46,527 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-07-21 03:10:46,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 03:10:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-07-21 03:10:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 03:10:46,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:46,531 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:46,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:46,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2022-07-21 03:10:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568026889] [2022-07-21 03:10:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:46,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:46,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050466008] [2022-07-21 03:10:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:46,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:46,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:46,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:10:46,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 03:10:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:46,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 03:10:46,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:10:46,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:10:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 03:10:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568026889] [2022-07-21 03:10:46,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050466008] [2022-07-21 03:10:46,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050466008] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:10:46,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:10:46,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-07-21 03:10:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727572093] [2022-07-21 03:10:46,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:10:46,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 03:10:46,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 03:10:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 03:10:46,901 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-21 03:10:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:47,010 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2022-07-21 03:10:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 03:10:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2022-07-21 03:10:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:47,012 INFO L225 Difference]: With dead ends: 249 [2022-07-21 03:10:47,013 INFO L226 Difference]: Without dead ends: 242 [2022-07-21 03:10:47,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:10:47,013 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:47,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 205 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:10:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-21 03:10:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 231. [2022-07-21 03:10:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 158 states have internal predecessors, (179), 54 states have call successors, (54), 26 states have call predecessors, (54), 26 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-21 03:10:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 283 transitions. [2022-07-21 03:10:47,029 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 283 transitions. Word has length 42 [2022-07-21 03:10:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 283 transitions. [2022-07-21 03:10:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-21 03:10:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 283 transitions. [2022-07-21 03:10:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 03:10:47,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:10:47,030 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:47,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:47,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:47,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:10:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:10:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2022-07-21 03:10:47,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:10:47,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177161367] [2022-07-21 03:10:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:47,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:10:47,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:10:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724529707] [2022-07-21 03:10:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:10:47,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:10:47,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:10:47,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 03:10:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:10:47,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 03:10:47,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:10:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 03:10:47,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:10:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 03:10:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:47,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177161367] [2022-07-21 03:10:47,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:47,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724529707] [2022-07-21 03:10:47,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724529707] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:10:47,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:10:47,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-21 03:10:47,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975509903] [2022-07-21 03:10:47,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:10:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 03:10:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 03:10:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 03:10:47,446 INFO L87 Difference]: Start difference. First operand 231 states and 283 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 03:10:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:47,714 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2022-07-21 03:10:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 03:10:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47 [2022-07-21 03:10:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:47,715 INFO L225 Difference]: With dead ends: 259 [2022-07-21 03:10:47,715 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:10:47,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-21 03:10:47,717 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 56 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:47,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 118 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 03:10:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:10:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:10:47,717 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) [2022-07-21 03:10:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:10:47,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-07-21 03:10:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:47,717 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:10:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 03:10:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:10:47,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:10:47,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:10:47,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 03:10:47,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 03:10:47,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:10:48,404 INFO L902 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2022-07-21 03:10:48,404 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,404 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-21 03:10:48,404 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0))))) [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse0 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-21 03:10:48,405 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-21 03:10:48,406 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-21 03:10:48,406 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:10:48,406 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:10:48,406 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-21 03:10:48,408 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:10:48,410 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:10:48,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:10:48 BoogieIcfgContainer [2022-07-21 03:10:48,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:10:48,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:10:48,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:10:48,420 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:10:48,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:10:43" (3/4) ... [2022-07-21 03:10:48,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:10:48,425 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:10:48,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 03:10:48,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:10:48,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:10:48,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:10:48,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:10:48,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:10:48,453 INFO L158 Benchmark]: Toolchain (without parser) took 4986.24ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 41.3MB in the beginning and 53.8MB in the end (delta: -12.6MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,454 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:10:48,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.21ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 45.2MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 60.8MB. Free memory was 45.0MB in the beginning and 43.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,454 INFO L158 Benchmark]: Boogie Preprocessor took 29.14ms. Allocated memory is still 60.8MB. Free memory was 43.5MB in the beginning and 42.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:10:48,454 INFO L158 Benchmark]: RCFGBuilder took 240.54ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 32.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,455 INFO L158 Benchmark]: TraceAbstraction took 4505.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 23.6MB in the end (delta: 8.4MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,455 INFO L158 Benchmark]: Witness Printer took 33.57ms. Allocated memory is still 73.4MB. Free memory was 23.6MB in the beginning and 53.8MB in the end (delta: -30.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:10:48,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.21ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 45.2MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 60.8MB. Free memory was 45.0MB in the beginning and 43.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.14ms. Allocated memory is still 60.8MB. Free memory was 43.5MB in the beginning and 42.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.54ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 32.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4505.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 23.6MB in the end (delta: 8.4MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 33.57ms. Allocated memory is still 73.4MB. Free memory was 23.6MB in the beginning and 53.8MB in the end (delta: -30.2MB). 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 1069 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 722 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 684 IncrementalHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 347 mSDtfsCounter, 684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 90 PreInvPairs, 171 NumberOfFragments, 264 HoareAnnotationTreeSize, 90 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2967 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 998 SizeOfPredicates, 21 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 358/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((cond == 1 && a * y == b) && 1 <= y) && 1 <= r) && b + x == a * y + r + q * y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((cond == 1 && x == r + q * y) && 1 <= y) && b + x == a * y + r + q * y RESULT: Ultimate proved your program to be correct! [2022-07-21 03:10:48,477 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