./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/egcd3-ll_unwindbound2.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 33e65da42eaec3b998693833c359b0db98e1fca213179917a50e687ef24ee4df --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:02:42,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:02:42,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:02:42,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:02:42,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:02:42,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:02:42,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:02:42,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:02:42,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:02:42,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:02:42,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:02:42,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:02:42,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:02:42,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:02:42,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:02:42,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:02:42,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:02:42,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:02:42,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:02:42,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:02:42,578 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:02:42,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:02:42,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:02:42,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:02:42,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:02:42,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:02:42,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:02:42,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:02:42,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:02:42,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:02:42,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:02:42,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:02:42,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:02:42,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:02:42,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:02:42,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:02:42,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:02:42,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:02:42,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:02:42,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:02:42,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:02:42,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:02:42,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:02:42,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:02:42,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:02:42,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:02:42,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:02:42,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:02:42,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:02:42,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:02:42,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:02:42,622 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:02:42,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:02:42,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:02:42,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:02:42,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:02:42,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:02:42,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:02:42,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:02:42,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:02:42,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:02:42,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:02:42,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:02:42,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:02:42,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:02:42,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:02:42,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:02:42,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:02:42,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:02:42,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:02:42,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:02:42,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:02:42,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:02:42,627 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:02:42,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:02:42,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:02:42,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33e65da42eaec3b998693833c359b0db98e1fca213179917a50e687ef24ee4df [2022-07-22 16:02:42,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:02:42,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:02:42,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:02:42,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:02:42,839 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:02:42,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2022-07-22 16:02:42,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51945ba83/1847a64a4b4f460999b975f8d83ede53/FLAGe9a5140ab [2022-07-22 16:02:43,240 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:02:43,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2022-07-22 16:02:43,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51945ba83/1847a64a4b4f460999b975f8d83ede53/FLAGe9a5140ab [2022-07-22 16:02:43,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51945ba83/1847a64a4b4f460999b975f8d83ede53 [2022-07-22 16:02:43,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:02:43,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:02:43,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:02:43,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:02:43,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:02:43,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da63ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43, skipping insertion in model container [2022-07-22 16:02:43,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:02:43,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:02:43,384 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/egcd3-ll_unwindbound2.c[490,503] [2022-07-22 16:02:43,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:02:43,414 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:02:43,423 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/egcd3-ll_unwindbound2.c[490,503] [2022-07-22 16:02:43,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:02:43,449 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:02:43,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43 WrapperNode [2022-07-22 16:02:43,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:02:43,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:02:43,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:02:43,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:02:43,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,481 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 91 [2022-07-22 16:02:43,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:02:43,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:02:43,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:02:43,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:02:43,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:02:43,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:02:43,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:02:43,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:02:43,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (1/1) ... [2022-07-22 16:02:43,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:02:43,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:43,534 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) [2022-07-22 16:02:43,537 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 [2022-07-22 16:02:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:02:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 16:02:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 16:02:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:02:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:02:43,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:02:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 16:02:43,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 16:02:43,598 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:02:43,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:02:43,696 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:02:43,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:02:43,700 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 16:02:43,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:02:43 BoogieIcfgContainer [2022-07-22 16:02:43,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:02:43,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:02:43,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:02:43,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:02:43,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:02:43" (1/3) ... [2022-07-22 16:02:43,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3b6e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:02:43, skipping insertion in model container [2022-07-22 16:02:43,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:02:43" (2/3) ... [2022-07-22 16:02:43,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3b6e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:02:43, skipping insertion in model container [2022-07-22 16:02:43,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:02:43" (3/3) ... [2022-07-22 16:02:43,721 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound2.c [2022-07-22 16:02:43,731 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:02:43,747 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:02:43,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:02:43,800 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@371a85f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5aaa66d6 [2022-07-22 16:02:43,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:02:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-22 16:02:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 16:02:43,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:43,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:43,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1663185933, now seen corresponding path program 1 times [2022-07-22 16:02:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:43,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409358251] [2022-07-22 16:02:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:02:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:02:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:02:43,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:02:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409358251] [2022-07-22 16:02:43,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409358251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:02:43,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:02:43,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 16:02:43,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042831905] [2022-07-22 16:02:43,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:02:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:02:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:02:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:02:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:02:43,962 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 16:02:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:02:43,992 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2022-07-22 16:02:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:02:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-22 16:02:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:02:44,000 INFO L225 Difference]: With dead ends: 67 [2022-07-22 16:02:44,000 INFO L226 Difference]: Without dead ends: 31 [2022-07-22 16:02:44,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:02:44,006 INFO L413 NwaCegarLoop]: 45 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, 45 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 [2022-07-22 16:02:44,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:02:44,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-22 16:02:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-22 16:02:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 16:02:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-07-22 16:02:44,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 18 [2022-07-22 16:02:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:02:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-07-22 16:02:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 16:02:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-07-22 16:02:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 16:02:44,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:44,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:44,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:02:44,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1013747788, now seen corresponding path program 1 times [2022-07-22 16:02:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:44,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760764436] [2022-07-22 16:02:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:44,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:02:44,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536112204] [2022-07-22 16:02:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:44,091 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) [2022-07-22 16:02:44,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:02:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:44,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:02:44,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:02:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:02:44,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:02:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:02:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760764436] [2022-07-22 16:02:44,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:02:44,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536112204] [2022-07-22 16:02:44,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536112204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:02:44,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:02:44,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 16:02:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108245412] [2022-07-22 16:02:44,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:02:44,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:02:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:02:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:02:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 16:02:44,225 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-22 16:02:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:02:44,248 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-07-22 16:02:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:02:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 19 [2022-07-22 16:02:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:02:44,253 INFO L225 Difference]: With dead ends: 40 [2022-07-22 16:02:44,253 INFO L226 Difference]: Without dead ends: 33 [2022-07-22 16:02:44,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 16:02:44,255 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:02:44,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:02:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-22 16:02:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-22 16:02:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 16:02:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-07-22 16:02:44,272 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 19 [2022-07-22 16:02:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:02:44,273 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-07-22 16:02:44,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-22 16:02:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-07-22 16:02:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 16:02:44,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:44,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:44,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:02:44,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:44,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:44,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1341775226, now seen corresponding path program 1 times [2022-07-22 16:02:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:44,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799037671] [2022-07-22 16:02:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:44,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:02:44,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775095455] [2022-07-22 16:02:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:44,526 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) [2022-07-22 16:02:44,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:02:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:44,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:02:44,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:02:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 16:02:44,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:02:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:02:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799037671] [2022-07-22 16:02:44,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:02:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775095455] [2022-07-22 16:02:44,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775095455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:02:44,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:02:44,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:02:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111647441] [2022-07-22 16:02:44,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:02:44,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:02:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:02:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:02:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:02:44,602 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:02:44,665 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2022-07-22 16:02:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:02:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-07-22 16:02:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:02:44,666 INFO L225 Difference]: With dead ends: 53 [2022-07-22 16:02:44,666 INFO L226 Difference]: Without dead ends: 46 [2022-07-22 16:02:44,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:02:44,667 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 46 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:02:44,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 128 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:02:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-22 16:02:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2022-07-22 16:02:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 16:02:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-22 16:02:44,673 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2022-07-22 16:02:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:02:44,673 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-22 16:02:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-22 16:02:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 16:02:44,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:44,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:44,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:02:44,887 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,SelfDestructingSolverStorable2 [2022-07-22 16:02:44,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1315139464, now seen corresponding path program 1 times [2022-07-22 16:02:44,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:44,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229771148] [2022-07-22 16:02:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:44,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:02:44,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445612700] [2022-07-22 16:02:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:44,898 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) [2022-07-22 16:02:44,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:02:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:44,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:02:44,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:02:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:02:44,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:02:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:02:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229771148] [2022-07-22 16:02:44,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:02:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445612700] [2022-07-22 16:02:44,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445612700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:02:44,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:02:44,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 16:02:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116043277] [2022-07-22 16:02:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:02:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:02:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:02:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:02:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:02:44,973 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:02:44,991 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2022-07-22 16:02:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:02:44,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-22 16:02:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:02:44,992 INFO L225 Difference]: With dead ends: 58 [2022-07-22 16:02:44,992 INFO L226 Difference]: Without dead ends: 36 [2022-07-22 16:02:44,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:02:44,993 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:02:44,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:02:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-22 16:02:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-22 16:02:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 16:02:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-07-22 16:02:44,998 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 25 [2022-07-22 16:02:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:02:44,998 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-07-22 16:02:44,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-07-22 16:02:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 16:02:44,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:44,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:45,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:02:45,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:45,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash 570907173, now seen corresponding path program 1 times [2022-07-22 16:02:45,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:45,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342499953] [2022-07-22 16:02:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:45,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:45,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:02:45,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669598808] [2022-07-22 16:02:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:45,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:45,244 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) [2022-07-22 16:02:45,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:02:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:02:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:02:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:02:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:02:45,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:02:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:02:45,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342499953] [2022-07-22 16:02:45,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:02:45,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669598808] [2022-07-22 16:02:45,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669598808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:02:45,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:02:45,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:02:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663177048] [2022-07-22 16:02:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:02:45,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:02:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:02:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:02:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:02:45,336 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:02:45,358 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2022-07-22 16:02:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:02:45,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-22 16:02:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:02:45,359 INFO L225 Difference]: With dead ends: 53 [2022-07-22 16:02:45,359 INFO L226 Difference]: Without dead ends: 29 [2022-07-22 16:02:45,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:02:45,360 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:02:45,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:02:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-22 16:02:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-22 16:02:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 16:02:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-22 16:02:45,363 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 25 [2022-07-22 16:02:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:02:45,363 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-22 16:02:45,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:02:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-22 16:02:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 16:02:45,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:02:45,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:02:45,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:02:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:45,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:02:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:02:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1698298847, now seen corresponding path program 1 times [2022-07-22 16:02:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:02:45,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224489775] [2022-07-22 16:02:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:02:45,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:02:45,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118165052] [2022-07-22 16:02:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:02:45,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:45,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:02:45,591 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) [2022-07-22 16:02:45,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:02:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 16:02:45,623 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 16:02:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 16:02:45,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 16:02:45,646 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 16:02:45,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 16:02:45,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:02:45,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:02:45,860 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-22 16:02:45,862 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 16:02:45,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:02:45 BoogieIcfgContainer [2022-07-22 16:02:45,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 16:02:45,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 16:02:45,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 16:02:45,881 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 16:02:45,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:02:43" (3/4) ... [2022-07-22 16:02:45,882 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 16:02:45,909 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 16:02:45,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 16:02:45,909 INFO L158 Benchmark]: Toolchain (without parser) took 2654.43ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 74.7MB in the beginning and 76.2MB in the end (delta: -1.5MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,910 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 59.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 16:02:45,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.04ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 74.5MB in the beginning and 119.9MB in the end (delta: -45.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.60ms. Allocated memory is still 146.8MB. Free memory was 119.9MB in the beginning and 118.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 16:02:45,910 INFO L158 Benchmark]: Boogie Preprocessor took 21.36ms. Allocated memory is still 146.8MB. Free memory was 118.7MB in the beginning and 117.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,911 INFO L158 Benchmark]: RCFGBuilder took 198.35ms. Allocated memory is still 146.8MB. Free memory was 117.3MB in the beginning and 106.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,911 INFO L158 Benchmark]: TraceAbstraction took 2177.36ms. Allocated memory is still 146.8MB. Free memory was 106.1MB in the beginning and 78.3MB in the end (delta: 27.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,911 INFO L158 Benchmark]: Witness Printer took 28.57ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 76.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:02:45,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 59.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.04ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 74.5MB in the beginning and 119.9MB in the end (delta: -45.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.60ms. Allocated memory is still 146.8MB. Free memory was 119.9MB in the beginning and 118.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.36ms. Allocated memory is still 146.8MB. Free memory was 118.7MB in the beginning and 117.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 198.35ms. Allocated memory is still 146.8MB. Free memory was 117.3MB in the beginning and 106.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2177.36ms. Allocated memory is still 146.8MB. Free memory was 106.1MB in the beginning and 78.3MB in the end (delta: 27.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 28.57ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 76.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=1, y=2] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=1, y=2] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=1, b=2, counter=0, p=1, q=0, r=0, s=1, x=1, y=2] [L34] EXPR counter++ VAL [a=1, b=2, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=1, y=2] [L34] COND TRUE counter++<2 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [a=1, b=2, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, y=2] [L41] EXPR counter++ VAL [a=1, b=2, c=1, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=1, y=2] [L41] COND TRUE counter++<2 [L42] COND TRUE !(c >= b) VAL [a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, y=2] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [a=2, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, y=2] [L34] EXPR counter++ VAL [a=2, b=1, c=1, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, y=2] [L34] COND FALSE !(counter++<2) [L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) VAL [\old(cond)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 254 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 187 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 5 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 22/22 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-22 16:02:45,939 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE