./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/geo1-ll_unwindbound5.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 757749d35671eda7818ce7a9276fa400eff8da4461713202236766545f2a8763 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:28:33,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:28:33,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:28:33,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:28:33,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:28:33,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:28:33,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:28:33,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:28:33,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:28:33,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:28:33,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:28:33,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:28:33,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:28:33,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:28:33,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:28:33,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:28:33,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:28:33,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:28:33,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:28:33,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:28:33,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:28:33,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:28:33,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:28:33,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:28:33,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:28:33,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:28:33,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:28:33,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:28:33,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:28:33,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:28:33,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:28:33,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:28:33,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:28:33,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:28:33,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:28:33,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:28:33,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:28:33,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:28:33,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:28:33,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:28:33,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:28:33,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:28:33,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:28:33,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:28:33,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:28:33,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:28:33,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:28:33,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:28:33,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:28:33,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:28:33,308 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:28:33,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:28:33,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:28:33,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:28:33,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:28:33,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:28:33,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:28:33,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:28:33,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:28:33,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:28:33,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:28:33,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:28:33,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:28:33,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:28:33,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 757749d35671eda7818ce7a9276fa400eff8da4461713202236766545f2a8763 [2022-02-20 17:28:33,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:28:33,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:28:33,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:28:33,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:28:33,539 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:28:33,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2022-02-20 17:28:33,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266afc91c/9a9832e853ac41a5ac121b5ee4faac81/FLAG6edda3400 [2022-02-20 17:28:33,938 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:28:33,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2022-02-20 17:28:33,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266afc91c/9a9832e853ac41a5ac121b5ee4faac81/FLAG6edda3400 [2022-02-20 17:28:33,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266afc91c/9a9832e853ac41a5ac121b5ee4faac81 [2022-02-20 17:28:33,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:28:33,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:28:33,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:28:33,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:28:33,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:28:33,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:28:33" (1/1) ... [2022-02-20 17:28:33,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1437abad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:33, skipping insertion in model container [2022-02-20 17:28:33,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:28:33" (1/1) ... [2022-02-20 17:28:33,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:28:33,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:28:34,082 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/geo1-ll_unwindbound5.c[546,559] [2022-02-20 17:28:34,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:28:34,100 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:28:34,108 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/geo1-ll_unwindbound5.c[546,559] [2022-02-20 17:28:34,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:28:34,120 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:28:34,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34 WrapperNode [2022-02-20 17:28:34,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:28:34,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:28:34,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:28:34,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:28:34,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,147 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-02-20 17:28:34,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:28:34,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:28:34,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:28:34,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:28:34,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:28:34,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:28:34,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:28:34,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:28:34,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (1/1) ... [2022-02-20 17:28:34,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:28:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:28:34,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 17:28:34,218 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 [2022-02-20 17:28:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:28:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 17:28:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 17:28:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:28:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:28:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:28:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:28:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:28:34,292 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:28:34,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:28:34,409 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:28:34,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:28:34,414 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:28:34,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:28:34 BoogieIcfgContainer [2022-02-20 17:28:34,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:28:34,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:28:34,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:28:34,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:28:34,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:28:33" (1/3) ... [2022-02-20 17:28:34,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9b3320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:28:34, skipping insertion in model container [2022-02-20 17:28:34,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:28:34" (2/3) ... [2022-02-20 17:28:34,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9b3320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:28:34, skipping insertion in model container [2022-02-20 17:28:34,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:28:34" (3/3) ... [2022-02-20 17:28:34,421 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound5.c [2022-02-20 17:28:34,425 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:28:34,425 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:28:34,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:28:34,459 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 17:28:34,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:28:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-20 17:28:34,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:34,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:34,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 995043441, now seen corresponding path program 1 times [2022-02-20 17:28:34,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:28:34,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073952121] [2022-02-20 17:28:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:28:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-20 17:28:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:34,668 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#true} ~cond := #in~cond; {28#true} is VALID [2022-02-20 17:28:34,669 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume 0 == ~cond;assume false; {29#false} is VALID [2022-02-20 17:28:34,669 INFO L290 TraceCheckUtils]: 2: Hoare triple {29#false} assume true; {29#false} is VALID [2022-02-20 17:28:34,670 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29#false} {28#true} #51#return; {29#false} is VALID [2022-02-20 17:28:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-20 17:28:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:34,688 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#true} ~cond := #in~cond; {28#true} is VALID [2022-02-20 17:28:34,690 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume 0 == ~cond;assume false; {29#false} is VALID [2022-02-20 17:28:34,690 INFO L290 TraceCheckUtils]: 2: Hoare triple {29#false} assume true; {29#false} is VALID [2022-02-20 17:28:34,690 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29#false} {29#false} #53#return; {29#false} is VALID [2022-02-20 17:28:34,691 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {28#true} is VALID [2022-02-20 17:28:34,691 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~z~0#1, main_~k~0#1, main_~x~0#1, main_~y~0#1, main_~c~0#1;havoc main_~z~0#1;havoc main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~c~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~z~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet5#1 && main_#t~nondet5#1 <= 2147483647;main_~k~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; {28#true} is VALID [2022-02-20 17:28:34,691 INFO L272 TraceCheckUtils]: 2: Hoare triple {28#true} call assume_abort_if_not((if main_~z~0#1 >= 1 then 1 else 0)); {28#true} is VALID [2022-02-20 17:28:34,692 INFO L290 TraceCheckUtils]: 3: Hoare triple {28#true} ~cond := #in~cond; {28#true} is VALID [2022-02-20 17:28:34,692 INFO L290 TraceCheckUtils]: 4: Hoare triple {28#true} assume 0 == ~cond;assume false; {29#false} is VALID [2022-02-20 17:28:34,692 INFO L290 TraceCheckUtils]: 5: Hoare triple {29#false} assume true; {29#false} is VALID [2022-02-20 17:28:34,693 INFO L284 TraceCheckUtils]: 6: Hoare quadruple {29#false} {28#true} #51#return; {29#false} is VALID [2022-02-20 17:28:34,693 INFO L272 TraceCheckUtils]: 7: Hoare triple {29#false} call assume_abort_if_not((if main_~k~0#1 >= 1 then 1 else 0)); {28#true} is VALID [2022-02-20 17:28:34,693 INFO L290 TraceCheckUtils]: 8: Hoare triple {28#true} ~cond := #in~cond; {28#true} is VALID [2022-02-20 17:28:34,694 INFO L290 TraceCheckUtils]: 9: Hoare triple {28#true} assume 0 == ~cond;assume false; {29#false} is VALID [2022-02-20 17:28:34,694 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} assume true; {29#false} is VALID [2022-02-20 17:28:34,698 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {29#false} {29#false} #53#return; {29#false} is VALID [2022-02-20 17:28:34,699 INFO L290 TraceCheckUtils]: 12: Hoare triple {29#false} main_~x~0#1 := 1;main_~y~0#1 := main_~z~0#1;main_~c~0#1 := 1; {29#false} is VALID [2022-02-20 17:28:34,699 INFO L290 TraceCheckUtils]: 13: Hoare triple {29#false} assume !true; {29#false} is VALID [2022-02-20 17:28:34,699 INFO L290 TraceCheckUtils]: 14: Hoare triple {29#false} main_~x~0#1 := main_~x~0#1 * (main_~z~0#1 - 1); {29#false} is VALID [2022-02-20 17:28:34,700 INFO L272 TraceCheckUtils]: 15: Hoare triple {29#false} call __VERIFIER_assert((if 0 == 1 + main_~x~0#1 - main_~y~0#1 then 1 else 0)); {29#false} is VALID [2022-02-20 17:28:34,700 INFO L290 TraceCheckUtils]: 16: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2022-02-20 17:28:34,700 INFO L290 TraceCheckUtils]: 17: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2022-02-20 17:28:34,700 INFO L290 TraceCheckUtils]: 18: Hoare triple {29#false} assume !false; {29#false} is VALID [2022-02-20 17:28:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 17:28:34,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:28:34,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073952121] [2022-02-20 17:28:34,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073952121] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:28:34,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:28:34,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:28:34,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259717866] [2022-02-20 17:28:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:28:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) Word has length 19 [2022-02-20 17:28:34,709 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:34,711 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) [2022-02-20 17:28:34,732 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:34,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:28:34,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:28:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:28:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:28:34,749 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) [2022-02-20 17:28:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:34,783 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-02-20 17:28:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:28:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) Word has length 19 [2022-02-20 17:28:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) [2022-02-20 17:28:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2022-02-20 17:28:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) [2022-02-20 17:28:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2022-02-20 17:28:34,795 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 62 transitions. [2022-02-20 17:28:34,846 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:34,852 INFO L225 Difference]: With dead ends: 47 [2022-02-20 17:28:34,852 INFO L226 Difference]: Without dead ends: 21 [2022-02-20 17:28:34,854 INFO L932 BasicCegarLoop]: 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 [2022-02-20 17:28:34,857 INFO L933 BasicCegarLoop]: 28 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, 28 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 [2022-02-20 17:28:34,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:28:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-20 17:28:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-02-20 17:28:34,878 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:34,878 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 17:28:34,879 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 17:28:34,879 INFO L87 Difference]: Start difference. First operand 21 states. Second operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 17:28:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:34,882 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-02-20 17:28:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-20 17:28:34,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:34,883 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:34,883 INFO L74 IsIncluded]: Start isIncluded. First operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 21 states. [2022-02-20 17:28:34,884 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 21 states. [2022-02-20 17:28:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:34,886 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-02-20 17:28:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-20 17:28:34,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:34,887 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:34,887 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:34,887 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 17:28:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-02-20 17:28:34,890 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2022-02-20 17:28:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-02-20 17:28:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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), 2 states have call successors, (2) [2022-02-20 17:28:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-20 17:28:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-20 17:28:34,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:34,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:34,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:28:34,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1059321002, now seen corresponding path program 1 times [2022-02-20 17:28:34,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:28:34,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042782619] [2022-02-20 17:28:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:28:34,911 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-20 17:28:34,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357907861] [2022-02-20 17:28:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:34,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:28:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:28:34,913 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) [2022-02-20 17:28:34,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-20 17:28:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:34,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-20 17:28:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:34,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:28:35,129 INFO L290 TraceCheckUtils]: 0: Hoare triple {172#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {172#true} is VALID [2022-02-20 17:28:35,130 INFO L290 TraceCheckUtils]: 1: Hoare triple {172#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~z~0#1, main_~k~0#1, main_~x~0#1, main_~y~0#1, main_~c~0#1;havoc main_~z~0#1;havoc main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~c~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~z~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet5#1 && main_#t~nondet5#1 <= 2147483647;main_~k~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; {172#true} is VALID [2022-02-20 17:28:35,130 INFO L272 TraceCheckUtils]: 2: Hoare triple {172#true} call assume_abort_if_not((if main_~z~0#1 >= 1 then 1 else 0)); {172#true} is VALID [2022-02-20 17:28:35,130 INFO L290 TraceCheckUtils]: 3: Hoare triple {172#true} ~cond := #in~cond; {172#true} is VALID [2022-02-20 17:28:35,131 INFO L290 TraceCheckUtils]: 4: Hoare triple {172#true} assume !(0 == ~cond); {172#true} is VALID [2022-02-20 17:28:35,131 INFO L290 TraceCheckUtils]: 5: Hoare triple {172#true} assume true; {172#true} is VALID [2022-02-20 17:28:35,131 INFO L284 TraceCheckUtils]: 6: Hoare quadruple {172#true} {172#true} #51#return; {172#true} is VALID [2022-02-20 17:28:35,131 INFO L272 TraceCheckUtils]: 7: Hoare triple {172#true} call assume_abort_if_not((if main_~k~0#1 >= 1 then 1 else 0)); {172#true} is VALID [2022-02-20 17:28:35,132 INFO L290 TraceCheckUtils]: 8: Hoare triple {172#true} ~cond := #in~cond; {172#true} is VALID [2022-02-20 17:28:35,132 INFO L290 TraceCheckUtils]: 9: Hoare triple {172#true} assume !(0 == ~cond); {172#true} is VALID [2022-02-20 17:28:35,132 INFO L290 TraceCheckUtils]: 10: Hoare triple {172#true} assume true; {172#true} is VALID [2022-02-20 17:28:35,132 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {172#true} {172#true} #53#return; {172#true} is VALID [2022-02-20 17:28:35,133 INFO L290 TraceCheckUtils]: 12: Hoare triple {172#true} main_~x~0#1 := 1;main_~y~0#1 := main_~z~0#1;main_~c~0#1 := 1; {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:28:35,134 INFO L290 TraceCheckUtils]: 13: Hoare triple {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} main_#t~post6#1 := ~counter~0;~counter~0 := 1 + main_#t~post6#1; {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:28:35,135 INFO L290 TraceCheckUtils]: 14: Hoare triple {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} assume !!(main_#t~post6#1 < 5);havoc main_#t~post6#1; {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:28:35,136 INFO L272 TraceCheckUtils]: 15: Hoare triple {213#(and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1))} call __VERIFIER_assert((if 0 == 1 + (main_~x~0#1 * main_~z~0#1 - main_~x~0#1 - main_~y~0#1) then 1 else 0)); {223#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-02-20 17:28:35,137 INFO L290 TraceCheckUtils]: 16: Hoare triple {223#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {227#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-02-20 17:28:35,139 INFO L290 TraceCheckUtils]: 17: Hoare triple {227#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {173#false} is VALID [2022-02-20 17:28:35,139 INFO L290 TraceCheckUtils]: 18: Hoare triple {173#false} assume !false; {173#false} is VALID [2022-02-20 17:28:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 17:28:35,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:28:35,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:28:35,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042782619] [2022-02-20 17:28:35,141 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-20 17:28:35,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357907861] [2022-02-20 17:28:35,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357907861] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:28:35,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:28:35,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 17:28:35,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036434403] [2022-02-20 17:28:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:28:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-02-20 17:28:35,145 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:35,146 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2022-02-20 17:28:35,162 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:35,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 17:28:35,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:28:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 17:28:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 17:28:35,165 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2022-02-20 17:28:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,278 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-02-20 17:28:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 17:28:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-02-20 17:28:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2022-02-20 17:28:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-02-20 17:28:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2022-02-20 17:28:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-02-20 17:28:35,289 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 37 transitions. [2022-02-20 17:28:35,318 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:35,321 INFO L225 Difference]: With dead ends: 32 [2022-02-20 17:28:35,322 INFO L226 Difference]: Without dead ends: 30 [2022-02-20 17:28:35,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-20 17:28:35,327 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:28:35,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 76 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:28:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-20 17:28:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-02-20 17:28:35,336 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:35,337 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,337 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,338 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,341 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-02-20 17:28:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-02-20 17:28:35,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:35,342 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:35,343 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-02-20 17:28:35,345 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-02-20 17:28:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,349 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-02-20 17:28:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-02-20 17:28:35,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:35,350 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:35,350 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:35,350 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-02-20 17:28:35,354 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2022-02-20 17:28:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:35,354 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-02-20 17:28:35,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2022-02-20 17:28:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-02-20 17:28:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-20 17:28:35,356 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:35,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:35,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-20 17:28:35,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:28:35,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1437250441, now seen corresponding path program 1 times [2022-02-20 17:28:35,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:28:35,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055167364] [2022-02-20 17:28:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:35,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:28:35,595 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-20 17:28:35,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135346213] [2022-02-20 17:28:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:35,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:28:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:28:35,597 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) [2022-02-20 17:28:35,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-20 17:28:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:35,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-20 17:28:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:28:35,735 INFO L290 TraceCheckUtils]: 0: Hoare triple {375#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,735 INFO L290 TraceCheckUtils]: 1: Hoare triple {380#(<= ~counter~0 0)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~z~0#1, main_~k~0#1, main_~x~0#1, main_~y~0#1, main_~c~0#1;havoc main_~z~0#1;havoc main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~c~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~z~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet5#1 && main_#t~nondet5#1 <= 2147483647;main_~k~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,736 INFO L272 TraceCheckUtils]: 2: Hoare triple {380#(<= ~counter~0 0)} call assume_abort_if_not((if main_~z~0#1 >= 1 then 1 else 0)); {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,740 INFO L290 TraceCheckUtils]: 3: Hoare triple {380#(<= ~counter~0 0)} ~cond := #in~cond; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,740 INFO L290 TraceCheckUtils]: 4: Hoare triple {380#(<= ~counter~0 0)} assume !(0 == ~cond); {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,741 INFO L290 TraceCheckUtils]: 5: Hoare triple {380#(<= ~counter~0 0)} assume true; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,741 INFO L284 TraceCheckUtils]: 6: Hoare quadruple {380#(<= ~counter~0 0)} {380#(<= ~counter~0 0)} #51#return; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,742 INFO L272 TraceCheckUtils]: 7: Hoare triple {380#(<= ~counter~0 0)} call assume_abort_if_not((if main_~k~0#1 >= 1 then 1 else 0)); {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,742 INFO L290 TraceCheckUtils]: 8: Hoare triple {380#(<= ~counter~0 0)} ~cond := #in~cond; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,744 INFO L290 TraceCheckUtils]: 9: Hoare triple {380#(<= ~counter~0 0)} assume !(0 == ~cond); {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,745 INFO L290 TraceCheckUtils]: 10: Hoare triple {380#(<= ~counter~0 0)} assume true; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,745 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {380#(<= ~counter~0 0)} {380#(<= ~counter~0 0)} #53#return; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,745 INFO L290 TraceCheckUtils]: 12: Hoare triple {380#(<= ~counter~0 0)} main_~x~0#1 := 1;main_~y~0#1 := main_~z~0#1;main_~c~0#1 := 1; {380#(<= ~counter~0 0)} is VALID [2022-02-20 17:28:35,746 INFO L290 TraceCheckUtils]: 13: Hoare triple {380#(<= ~counter~0 0)} main_#t~post6#1 := ~counter~0;~counter~0 := 1 + main_#t~post6#1; {420#(<= |ULTIMATE.start_main_#t~post6#1| 0)} is VALID [2022-02-20 17:28:35,746 INFO L290 TraceCheckUtils]: 14: Hoare triple {420#(<= |ULTIMATE.start_main_#t~post6#1| 0)} assume !(main_#t~post6#1 < 5);havoc main_#t~post6#1; {376#false} is VALID [2022-02-20 17:28:35,747 INFO L290 TraceCheckUtils]: 15: Hoare triple {376#false} main_~x~0#1 := main_~x~0#1 * (main_~z~0#1 - 1); {376#false} is VALID [2022-02-20 17:28:35,747 INFO L272 TraceCheckUtils]: 16: Hoare triple {376#false} call __VERIFIER_assert((if 0 == 1 + main_~x~0#1 - main_~y~0#1 then 1 else 0)); {376#false} is VALID [2022-02-20 17:28:35,747 INFO L290 TraceCheckUtils]: 17: Hoare triple {376#false} ~cond := #in~cond; {376#false} is VALID [2022-02-20 17:28:35,747 INFO L290 TraceCheckUtils]: 18: Hoare triple {376#false} assume 0 == ~cond; {376#false} is VALID [2022-02-20 17:28:35,747 INFO L290 TraceCheckUtils]: 19: Hoare triple {376#false} assume !false; {376#false} is VALID [2022-02-20 17:28:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 17:28:35,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:28:35,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:28:35,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055167364] [2022-02-20 17:28:35,748 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-20 17:28:35,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135346213] [2022-02-20 17:28:35,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135346213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:28:35,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:28:35,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 17:28:35,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770261498] [2022-02-20 17:28:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:28:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20 [2022-02-20 17:28:35,751 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:35,751 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-20 17:28:35,763 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:35,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 17:28:35,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:28:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 17:28:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 17:28:35,765 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-20 17:28:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,810 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-02-20 17:28:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-20 17:28:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20 [2022-02-20 17:28:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-20 17:28:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-02-20 17:28:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-20 17:28:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-02-20 17:28:35,818 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 34 transitions. [2022-02-20 17:28:35,840 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:35,842 INFO L225 Difference]: With dead ends: 36 [2022-02-20 17:28:35,842 INFO L226 Difference]: Without dead ends: 28 [2022-02-20 17:28:35,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 17:28:35,845 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:28:35,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:28:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-20 17:28:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-02-20 17:28:35,853 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:35,853 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,853 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,854 INFO L87 Difference]: Start difference. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,855 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-02-20 17:28:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-02-20 17:28:35,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:35,856 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:35,856 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 28 states. [2022-02-20 17:28:35,856 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 28 states. [2022-02-20 17:28:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:35,858 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-02-20 17:28:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-02-20 17:28:35,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:35,858 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:35,858 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:35,858 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-20 17:28:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-02-20 17:28:35,860 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2022-02-20 17:28:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:35,860 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-02-20 17:28:35,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-20 17:28:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-02-20 17:28:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-20 17:28:35,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:35,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:35,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-20 17:28:36,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-20 17:28:36,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -833627624, now seen corresponding path program 1 times [2022-02-20 17:28:36,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:28:36,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516275786] [2022-02-20 17:28:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:36,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:28:36,092 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-20 17:28:36,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511981795] [2022-02-20 17:28:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:36,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:28:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:28:36,094 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) [2022-02-20 17:28:36,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-20 17:28:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:36,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-20 17:28:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:36,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:28:40,510 INFO L290 TraceCheckUtils]: 0: Hoare triple {580#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {580#true} is VALID [2022-02-20 17:28:40,510 INFO L290 TraceCheckUtils]: 1: Hoare triple {580#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~z~0#1, main_~k~0#1, main_~x~0#1, main_~y~0#1, main_~c~0#1;havoc main_~z~0#1;havoc main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~c~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~z~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet5#1 && main_#t~nondet5#1 <= 2147483647;main_~k~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; {580#true} is VALID [2022-02-20 17:28:40,510 INFO L272 TraceCheckUtils]: 2: Hoare triple {580#true} call assume_abort_if_not((if main_~z~0#1 >= 1 then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:40,510 INFO L290 TraceCheckUtils]: 3: Hoare triple {580#true} ~cond := #in~cond; {580#true} is VALID [2022-02-20 17:28:40,511 INFO L290 TraceCheckUtils]: 4: Hoare triple {580#true} assume !(0 == ~cond); {580#true} is VALID [2022-02-20 17:28:40,511 INFO L290 TraceCheckUtils]: 5: Hoare triple {580#true} assume true; {580#true} is VALID [2022-02-20 17:28:40,511 INFO L284 TraceCheckUtils]: 6: Hoare quadruple {580#true} {580#true} #51#return; {580#true} is VALID [2022-02-20 17:28:40,511 INFO L272 TraceCheckUtils]: 7: Hoare triple {580#true} call assume_abort_if_not((if main_~k~0#1 >= 1 then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:40,511 INFO L290 TraceCheckUtils]: 8: Hoare triple {580#true} ~cond := #in~cond; {580#true} is VALID [2022-02-20 17:28:40,511 INFO L290 TraceCheckUtils]: 9: Hoare triple {580#true} assume !(0 == ~cond); {580#true} is VALID [2022-02-20 17:28:40,512 INFO L290 TraceCheckUtils]: 10: Hoare triple {580#true} assume true; {580#true} is VALID [2022-02-20 17:28:40,512 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {580#true} {580#true} #53#return; {580#true} is VALID [2022-02-20 17:28:40,512 INFO L290 TraceCheckUtils]: 12: Hoare triple {580#true} main_~x~0#1 := 1;main_~y~0#1 := main_~z~0#1;main_~c~0#1 := 1; {580#true} is VALID [2022-02-20 17:28:40,512 INFO L290 TraceCheckUtils]: 13: Hoare triple {580#true} main_#t~post6#1 := ~counter~0;~counter~0 := 1 + main_#t~post6#1; {580#true} is VALID [2022-02-20 17:28:40,512 INFO L290 TraceCheckUtils]: 14: Hoare triple {580#true} assume !!(main_#t~post6#1 < 5);havoc main_#t~post6#1; {580#true} is VALID [2022-02-20 17:28:40,512 INFO L272 TraceCheckUtils]: 15: Hoare triple {580#true} call __VERIFIER_assert((if 0 == 1 + (main_~x~0#1 * main_~z~0#1 - main_~x~0#1 - main_~y~0#1) then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:40,513 INFO L290 TraceCheckUtils]: 16: Hoare triple {580#true} ~cond := #in~cond; {633#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-02-20 17:28:40,513 INFO L290 TraceCheckUtils]: 17: Hoare triple {633#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {637#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-02-20 17:28:40,514 INFO L290 TraceCheckUtils]: 18: Hoare triple {637#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {637#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-02-20 17:28:40,515 INFO L284 TraceCheckUtils]: 19: Hoare quadruple {637#(not (= |__VERIFIER_assert_#in~cond| 0))} {580#true} #55#return; {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} is VALID [2022-02-20 17:28:40,515 INFO L290 TraceCheckUtils]: 20: Hoare triple {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} assume !(main_~c~0#1 < main_~k~0#1); {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} is VALID [2022-02-20 17:28:40,516 INFO L290 TraceCheckUtils]: 21: Hoare triple {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} main_~x~0#1 := main_~x~0#1 * (main_~z~0#1 - 1); {651#(exists ((|v_ULTIMATE.start_main_~x~0#1_12| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (and (= |ULTIMATE.start_main_~x~0#1| (* |v_ULTIMATE.start_main_~x~0#1_12| (+ (- 1) |ULTIMATE.start_main_~z~0#1|))) (= (+ |v_ULTIMATE.start_main_~x~0#1_12| |ULTIMATE.start_main_~y~0#1|) (+ (* |v_ULTIMATE.start_main_~x~0#1_12| |ULTIMATE.start_main_~z~0#1|) 1))))} is VALID [2022-02-20 17:28:40,517 INFO L272 TraceCheckUtils]: 22: Hoare triple {651#(exists ((|v_ULTIMATE.start_main_~x~0#1_12| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (and (= |ULTIMATE.start_main_~x~0#1| (* |v_ULTIMATE.start_main_~x~0#1_12| (+ (- 1) |ULTIMATE.start_main_~z~0#1|))) (= (+ |v_ULTIMATE.start_main_~x~0#1_12| |ULTIMATE.start_main_~y~0#1|) (+ (* |v_ULTIMATE.start_main_~x~0#1_12| |ULTIMATE.start_main_~z~0#1|) 1))))} call __VERIFIER_assert((if 0 == 1 + main_~x~0#1 - main_~y~0#1 then 1 else 0)); {655#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-02-20 17:28:40,517 INFO L290 TraceCheckUtils]: 23: Hoare triple {655#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {659#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-02-20 17:28:40,518 INFO L290 TraceCheckUtils]: 24: Hoare triple {659#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {581#false} is VALID [2022-02-20 17:28:40,518 INFO L290 TraceCheckUtils]: 25: Hoare triple {581#false} assume !false; {581#false} is VALID [2022-02-20 17:28:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 17:28:40,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 17:28:44,124 INFO L290 TraceCheckUtils]: 25: Hoare triple {581#false} assume !false; {581#false} is VALID [2022-02-20 17:28:44,125 INFO L290 TraceCheckUtils]: 24: Hoare triple {659#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {581#false} is VALID [2022-02-20 17:28:44,125 INFO L290 TraceCheckUtils]: 23: Hoare triple {655#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {659#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-02-20 17:28:44,126 INFO L272 TraceCheckUtils]: 22: Hoare triple {675#(= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1))} call __VERIFIER_assert((if 0 == 1 + main_~x~0#1 - main_~y~0#1 then 1 else 0)); {655#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-02-20 17:28:44,126 INFO L290 TraceCheckUtils]: 21: Hoare triple {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} main_~x~0#1 := main_~x~0#1 * (main_~z~0#1 - 1); {675#(= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:28:44,127 INFO L290 TraceCheckUtils]: 20: Hoare triple {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} assume !(main_~c~0#1 < main_~k~0#1); {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} is VALID [2022-02-20 17:28:44,128 INFO L284 TraceCheckUtils]: 19: Hoare quadruple {637#(not (= |__VERIFIER_assert_#in~cond| 0))} {580#true} #55#return; {644#(= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1))} is VALID [2022-02-20 17:28:44,128 INFO L290 TraceCheckUtils]: 18: Hoare triple {637#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {637#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-02-20 17:28:44,128 INFO L290 TraceCheckUtils]: 17: Hoare triple {694#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {637#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-02-20 17:28:44,129 INFO L290 TraceCheckUtils]: 16: Hoare triple {580#true} ~cond := #in~cond; {694#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-02-20 17:28:44,129 INFO L272 TraceCheckUtils]: 15: Hoare triple {580#true} call __VERIFIER_assert((if 0 == 1 + (main_~x~0#1 * main_~z~0#1 - main_~x~0#1 - main_~y~0#1) then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:44,129 INFO L290 TraceCheckUtils]: 14: Hoare triple {580#true} assume !!(main_#t~post6#1 < 5);havoc main_#t~post6#1; {580#true} is VALID [2022-02-20 17:28:44,129 INFO L290 TraceCheckUtils]: 13: Hoare triple {580#true} main_#t~post6#1 := ~counter~0;~counter~0 := 1 + main_#t~post6#1; {580#true} is VALID [2022-02-20 17:28:44,129 INFO L290 TraceCheckUtils]: 12: Hoare triple {580#true} main_~x~0#1 := 1;main_~y~0#1 := main_~z~0#1;main_~c~0#1 := 1; {580#true} is VALID [2022-02-20 17:28:44,130 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {580#true} {580#true} #53#return; {580#true} is VALID [2022-02-20 17:28:44,130 INFO L290 TraceCheckUtils]: 10: Hoare triple {580#true} assume true; {580#true} is VALID [2022-02-20 17:28:44,130 INFO L290 TraceCheckUtils]: 9: Hoare triple {580#true} assume !(0 == ~cond); {580#true} is VALID [2022-02-20 17:28:44,130 INFO L290 TraceCheckUtils]: 8: Hoare triple {580#true} ~cond := #in~cond; {580#true} is VALID [2022-02-20 17:28:44,130 INFO L272 TraceCheckUtils]: 7: Hoare triple {580#true} call assume_abort_if_not((if main_~k~0#1 >= 1 then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:44,131 INFO L284 TraceCheckUtils]: 6: Hoare quadruple {580#true} {580#true} #51#return; {580#true} is VALID [2022-02-20 17:28:44,131 INFO L290 TraceCheckUtils]: 5: Hoare triple {580#true} assume true; {580#true} is VALID [2022-02-20 17:28:44,131 INFO L290 TraceCheckUtils]: 4: Hoare triple {580#true} assume !(0 == ~cond); {580#true} is VALID [2022-02-20 17:28:44,131 INFO L290 TraceCheckUtils]: 3: Hoare triple {580#true} ~cond := #in~cond; {580#true} is VALID [2022-02-20 17:28:44,131 INFO L272 TraceCheckUtils]: 2: Hoare triple {580#true} call assume_abort_if_not((if main_~z~0#1 >= 1 then 1 else 0)); {580#true} is VALID [2022-02-20 17:28:44,131 INFO L290 TraceCheckUtils]: 1: Hoare triple {580#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~z~0#1, main_~k~0#1, main_~x~0#1, main_~y~0#1, main_~c~0#1;havoc main_~z~0#1;havoc main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~c~0#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;main_~z~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet5#1 && main_#t~nondet5#1 <= 2147483647;main_~k~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; {580#true} is VALID [2022-02-20 17:28:44,132 INFO L290 TraceCheckUtils]: 0: Hoare triple {580#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {580#true} is VALID [2022-02-20 17:28:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 17:28:44,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:28:44,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516275786] [2022-02-20 17:28:44,132 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-20 17:28:44,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511981795] [2022-02-20 17:28:44,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511981795] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 17:28:44,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-20 17:28:44,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-20 17:28:44,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195928758] [2022-02-20 17:28:44,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-20 17:28:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-02-20 17:28:44,134 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:44,134 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-20 17:28:44,152 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:44,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-20 17:28:44,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:28:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-20 17:28:44,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-20 17:28:44,154 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-20 17:28:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:44,303 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-02-20 17:28:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-20 17:28:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-02-20 17:28:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-20 17:28:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-02-20 17:28:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-20 17:28:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-02-20 17:28:44,305 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 24 transitions. [2022-02-20 17:28:44,336 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:44,336 INFO L225 Difference]: With dead ends: 28 [2022-02-20 17:28:44,336 INFO L226 Difference]: Without dead ends: 0 [2022-02-20 17:28:44,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-20 17:28:44,338 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:28:44,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-02-20 17:28:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-20 17:28:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-20 17:28:44,338 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:44,338 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-02-20 17:28:44,339 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-02-20 17:28:44,339 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-02-20 17:28:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:44,339 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 17:28:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:28:44,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:44,339 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:44,339 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-02-20 17:28:44,339 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-02-20 17:28:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:44,339 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 17:28:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:28:44,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:44,340 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:44,340 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:44,340 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:44,340 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) [2022-02-20 17:28:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-20 17:28:44,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-02-20 17:28:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:44,340 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-20 17:28:44,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-20 17:28:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:28:44,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:44,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:28:44,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-20 17:28:44,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:28:44,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-20 17:28:44,562 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-20 17:28:44,563 INFO L854 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2022-02-20 17:28:44,563 INFO L858 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2022-02-20 17:28:44,563 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-02-20 17:28:44,563 INFO L861 garLoopResultBuilder]: At program point L50(lines 23 51) the Hoare annotation is: true [2022-02-20 17:28:44,563 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2022-02-20 17:28:44,563 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2022-02-20 17:28:44,564 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-02-20 17:28:44,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-02-20 17:28:44,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-20 17:28:44,564 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= ~counter~0 0) [2022-02-20 17:28:44,564 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= ~counter~0 0) [2022-02-20 17:28:44,564 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) [2022-02-20 17:28:44,564 INFO L858 garLoopResultBuilder]: For program point L49-1(line 49) no Hoare annotation was computed. [2022-02-20 17:28:44,564 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2022-02-20 17:28:44,565 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2022-02-20 17:28:44,566 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2022-02-20 17:28:44,568 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-02-20 17:28:44,569 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 17:28:44,572 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-02-20 17:28:44,573 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2022-02-20 17:28:44,574 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 17:28:44,575 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-02-20 17:28:44,575 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 17:28:44,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 05:28:44 BoogieIcfgContainer [2022-02-20 17:28:44,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 17:28:44,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 17:28:44,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 17:28:44,582 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 17:28:44,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:28:34" (3/4) ... [2022-02-20 17:28:44,584 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-02-20 17:28:44,587 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-02-20 17:28:44,588 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-02-20 17:28:44,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-02-20 17:28:44,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-02-20 17:28:44,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-02-20 17:28:44,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-02-20 17:28:44,610 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 17:28:44,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 17:28:44,611 INFO L158 Benchmark]: Toolchain (without parser) took 10657.12ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 72.7MB in the beginning and 60.7MB in the end (delta: 12.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-02-20 17:28:44,612 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:28:44,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.74ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 79.2MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 17:28:44,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.42ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:28:44,613 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.7MB in the end (delta: 867.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:28:44,613 INFO L158 Benchmark]: RCFGBuilder took 235.99ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 65.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 17:28:44,613 INFO L158 Benchmark]: TraceAbstraction took 10164.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 63.8MB in the end (delta: 1.6MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2022-02-20 17:28:44,613 INFO L158 Benchmark]: Witness Printer took 29.43ms. Allocated memory is still 125.8MB. Free memory was 63.8MB in the beginning and 60.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 17:28:44,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.74ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 79.2MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.42ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.7MB in the end (delta: 867.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.99ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 65.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10164.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 63.8MB in the end (delta: 1.6MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 29.43ms. Allocated memory is still 125.8MB. Free memory was 63.8MB in the beginning and 60.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 172 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 87 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 32 HoareAnnotationTreeSize, 15 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 1 QuantifiedInterpolants, 237 SizeOfPredicates, 4 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 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: 35]: Loop Invariant Derived loop invariant: x + y == x * z + 1 RESULT: Ultimate proved your program to be correct! [2022-02-20 17:28:44,633 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