./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.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 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:41:16,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:41:16,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:41:16,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:41:16,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:41:16,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:41:16,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:41:16,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:41:16,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:41:16,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:41:16,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:41:16,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:41:16,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:41:16,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:41:16,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:41:16,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:41:16,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:41:16,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:41:16,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:41:16,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:41:16,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:41:16,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:41:16,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:41:16,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:41:16,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:41:16,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:41:16,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:41:16,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:41:16,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:41:16,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:41:16,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:41:16,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:41:16,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:41:16,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:41:16,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:41:16,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:41:16,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:41:16,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:41:16,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:41:16,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:41:16,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:41:16,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:41:16,957 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:41:16,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:41:16,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:41:16,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:41:16,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:41:16,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:41:16,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:41:16,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:41:16,959 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:41:16,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:41:16,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:41:16,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:41:16,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:41:16,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:41:16,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:41:16,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:41:16,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:41:16,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:41:16,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:41:16,963 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 [2023-02-15 20:41:17,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:41:17,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:41:17,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:41:17,188 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:41:17,188 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:41:17,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2023-02-15 20:41:18,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:41:18,215 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:41:18,215 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2023-02-15 20:41:18,220 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db438100/769ece3c42774fef9605f2824d7edbae/FLAG75ff74b4e [2023-02-15 20:41:18,643 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db438100/769ece3c42774fef9605f2824d7edbae [2023-02-15 20:41:18,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:41:18,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:41:18,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:41:18,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:41:18,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:41:18,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121404fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18, skipping insertion in model container [2023-02-15 20:41:18,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:41:18,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:41:18,747 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2023-02-15 20:41:18,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:41:18,780 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:41:18,788 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2023-02-15 20:41:18,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:41:18,802 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:41:18,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18 WrapperNode [2023-02-15 20:41:18,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:41:18,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:41:18,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:41:18,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:41:18,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,823 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-02-15 20:41:18,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:41:18,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:41:18,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:41:18,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:41:18,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:41:18,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:41:18,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:41:18,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:41:18,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (1/1) ... [2023-02-15 20:41:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:41:18,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:18,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 20:41:18,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 20:41:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:41:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:41:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:41:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:41:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:41:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:41:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:41:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:41:18,939 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:41:18,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:41:19,073 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:41:19,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:41:19,093 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 20:41:19,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:41:19 BoogieIcfgContainer [2023-02-15 20:41:19,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:41:19,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:41:19,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:41:19,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:41:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:41:18" (1/3) ... [2023-02-15 20:41:19,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dc5b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:41:19, skipping insertion in model container [2023-02-15 20:41:19,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:41:18" (2/3) ... [2023-02-15 20:41:19,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dc5b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:41:19, skipping insertion in model container [2023-02-15 20:41:19,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:41:19" (3/3) ... [2023-02-15 20:41:19,116 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2023-02-15 20:41:19,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:41:19,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:41:19,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:41:19,166 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f462535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:41:19,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:41:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:41:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 20:41:19,174 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:19,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:19,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2023-02-15 20:41:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8748832] [2023-02-15 20:41:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:19,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:19,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980382151] [2023-02-15 20:41:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:19,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:19,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:19,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:19,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:41:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:41:19,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:41:19,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:41:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:19,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8748832] [2023-02-15 20:41:19,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980382151] [2023-02-15 20:41:19,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980382151] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:41:19,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:41:19,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-02-15 20:41:19,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511496489] [2023-02-15 20:41:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:41:19,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:41:19,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:41:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:41:19,596 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:41:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:20,161 INFO L93 Difference]: Finished difference Result 79 states and 134 transitions. [2023-02-15 20:41:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:41:20,163 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-15 20:41:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:20,168 INFO L225 Difference]: With dead ends: 79 [2023-02-15 20:41:20,168 INFO L226 Difference]: Without dead ends: 42 [2023-02-15 20:41:20,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-02-15 20:41:20,173 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:20,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 147 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 3 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 20:41:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-15 20:41:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-02-15 20:41:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:41:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-02-15 20:41:20,203 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2023-02-15 20:41:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:20,203 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-02-15 20:41:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:41:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-02-15 20:41:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 20:41:20,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:20,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:20,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 20:41:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 20:41:20,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:20,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2023-02-15 20:41:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:20,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669836834] [2023-02-15 20:41:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:20,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:20,422 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744507340] [2023-02-15 20:41:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:20,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:20,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:20,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:20,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:41:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:20,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:41:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:41:20,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669836834] [2023-02-15 20:41:20,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744507340] [2023-02-15 20:41:20,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744507340] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:41:20,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:41:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-15 20:41:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442118324] [2023-02-15 20:41:20,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:41:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:41:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:41:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:41:20,669 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:41:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:20,801 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2023-02-15 20:41:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:41:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2023-02-15 20:41:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:20,803 INFO L225 Difference]: With dead ends: 48 [2023-02-15 20:41:20,803 INFO L226 Difference]: Without dead ends: 46 [2023-02-15 20:41:20,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:41:20,809 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:20,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 112 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:41:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-15 20:41:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-02-15 20:41:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:41:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2023-02-15 20:41:20,833 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 34 [2023-02-15 20:41:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:20,834 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2023-02-15 20:41:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:41:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-02-15 20:41:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 20:41:20,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:20,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:20,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 20:41:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 20:41:21,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2023-02-15 20:41:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774982151] [2023-02-15 20:41:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:21,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350712724] [2023-02-15 20:41:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:21,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:21,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:41:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 20:41:21,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 20:41:21,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 20:41:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:21,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774982151] [2023-02-15 20:41:21,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350712724] [2023-02-15 20:41:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350712724] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:41:21,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:41:21,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-15 20:41:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910361791] [2023-02-15 20:41:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:41:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:41:21,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:41:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:41:21,300 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:41:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:21,354 INFO L93 Difference]: Finished difference Result 70 states and 101 transitions. [2023-02-15 20:41:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:41:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-02-15 20:41:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:21,357 INFO L225 Difference]: With dead ends: 70 [2023-02-15 20:41:21,357 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 20:41:21,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:41:21,358 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:21,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:41:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 20:41:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-02-15 20:41:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 20:41:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2023-02-15 20:41:21,369 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 39 [2023-02-15 20:41:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:21,370 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2023-02-15 20:41:21,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:41:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2023-02-15 20:41:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 20:41:21,371 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:21,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:21,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 20:41:21,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:21,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2023-02-15 20:41:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:21,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110042272] [2023-02-15 20:41:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:21,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:21,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978024805] [2023-02-15 20:41:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:21,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:41:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 20:41:21,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 20:41:21,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:41:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110042272] [2023-02-15 20:41:21,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978024805] [2023-02-15 20:41:21,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978024805] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:41:21,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:41:21,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:41:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061471090] [2023-02-15 20:41:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:41:21,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:41:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:41:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:41:21,654 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 20:41:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:21,682 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2023-02-15 20:41:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 20:41:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2023-02-15 20:41:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:21,683 INFO L225 Difference]: With dead ends: 72 [2023-02-15 20:41:21,683 INFO L226 Difference]: Without dead ends: 70 [2023-02-15 20:41:21,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:41:21,684 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:21,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:41:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-15 20:41:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-02-15 20:41:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 20:41:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2023-02-15 20:41:21,695 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 45 [2023-02-15 20:41:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:21,696 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2023-02-15 20:41:21,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 20:41:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2023-02-15 20:41:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 20:41:21,697 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:21,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:21,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:41:21,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:21,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1322486933, now seen corresponding path program 1 times [2023-02-15 20:41:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:21,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673026080] [2023-02-15 20:41:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:21,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:21,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185885338] [2023-02-15 20:41:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:21,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:21,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:21,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:41:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:21,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 20:41:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-15 20:41:22,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673026080] [2023-02-15 20:41:22,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185885338] [2023-02-15 20:41:22,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185885338] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:41:22,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:41:22,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-15 20:41:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621806510] [2023-02-15 20:41:22,132 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:41:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:41:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:41:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:41:22,133 INFO L87 Difference]: Start difference. First operand 70 states and 97 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:41:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:22,211 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2023-02-15 20:41:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:41:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-02-15 20:41:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:22,214 INFO L225 Difference]: With dead ends: 80 [2023-02-15 20:41:22,214 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 20:41:22,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-15 20:41:22,215 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:22,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 108 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:41:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 20:41:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-02-15 20:41:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-15 20:41:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2023-02-15 20:41:22,241 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2023-02-15 20:41:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:22,242 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2023-02-15 20:41:22,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:41:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2023-02-15 20:41:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 20:41:22,247 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:22,247 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:22,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 20:41:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:22,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2023-02-15 20:41:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:22,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109633955] [2023-02-15 20:41:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:22,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:22,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186747459] [2023-02-15 20:41:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:22,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:22,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:41:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:22,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 20:41:22,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 20:41:22,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 20:41:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109633955] [2023-02-15 20:41:22,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186747459] [2023-02-15 20:41:22,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186747459] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:41:22,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:41:22,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-02-15 20:41:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156627016] [2023-02-15 20:41:22,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:41:22,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:41:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:41:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:41:22,645 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 20:41:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:22,767 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2023-02-15 20:41:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 20:41:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 50 [2023-02-15 20:41:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:22,769 INFO L225 Difference]: With dead ends: 84 [2023-02-15 20:41:22,769 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 20:41:22,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:41:22,772 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:22,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 124 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:41:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 20:41:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-15 20:41:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-15 20:41:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2023-02-15 20:41:22,789 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2023-02-15 20:41:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:22,790 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2023-02-15 20:41:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 20:41:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2023-02-15 20:41:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 20:41:22,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:22,792 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:22,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:41:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:23,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 2 times [2023-02-15 20:41:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158414127] [2023-02-15 20:41:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:23,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:23,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166359657] [2023-02-15 20:41:23,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:41:23,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:23,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:23,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:23,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:41:23,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:41:23,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:41:23,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 20:41:23,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-15 20:41:23,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-15 20:41:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158414127] [2023-02-15 20:41:23,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166359657] [2023-02-15 20:41:23,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166359657] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:41:23,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:41:23,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 20:41:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874653619] [2023-02-15 20:41:23,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:41:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 20:41:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 20:41:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:41:23,273 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-15 20:41:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:23,786 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2023-02-15 20:41:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:41:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2023-02-15 20:41:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:23,787 INFO L225 Difference]: With dead ends: 106 [2023-02-15 20:41:23,787 INFO L226 Difference]: Without dead ends: 99 [2023-02-15 20:41:23,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:41:23,788 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:23,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 144 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 20:41:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-15 20:41:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2023-02-15 20:41:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:41:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2023-02-15 20:41:23,800 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2023-02-15 20:41:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:23,800 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2023-02-15 20:41:23,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-15 20:41:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2023-02-15 20:41:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-15 20:41:23,801 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:41:23,801 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:23,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 20:41:24,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:24,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:41:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:41:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2023-02-15 20:41:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:41:24,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882406046] [2023-02-15 20:41:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:41:24,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:41:24,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943572108] [2023-02-15 20:41:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:41:24,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:41:24,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:41:24,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:41:24,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 20:41:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:41:24,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 20:41:24,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:41:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-15 20:41:24,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:41:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 20:41:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:41:24,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882406046] [2023-02-15 20:41:24,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:41:24,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943572108] [2023-02-15 20:41:24,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943572108] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:41:24,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:41:24,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-02-15 20:41:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399254723] [2023-02-15 20:41:24,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:41:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 20:41:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:41:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 20:41:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:41:24,318 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-02-15 20:41:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:41:24,748 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2023-02-15 20:41:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 20:41:24,748 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 65 [2023-02-15 20:41:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:41:24,748 INFO L225 Difference]: With dead ends: 99 [2023-02-15 20:41:24,748 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:41:24,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-15 20:41:24,749 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:41:24,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 190 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 20:41:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:41:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:41:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:41:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:41:24,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2023-02-15 20:41:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:41:24,750 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:41:24,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-02-15 20:41:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:41:24,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:41:24,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:41:24,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 20:41:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 20:41:24,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:41:30,845 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse7 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~a~0#1| (+ .cse7 .cse8))) (.cse1 (= (+ .cse5 .cse6 |ULTIMATE.start_main_~a~0#1|) (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8))) (.cse4 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse3 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse3)) (and .cse0 .cse4 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| (+ .cse5 .cse6)) (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse4 .cse2 (forall ((|ULTIMATE.start_main_~q~0#1| Int)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse3)))))) [2023-02-15 20:41:30,845 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:41:30,845 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~x~0#1|) [2023-02-15 20:41:30,845 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))) [2023-02-15 20:41:30,846 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse7 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~a~0#1| (+ .cse7 .cse8))) (.cse1 (= (+ .cse5 .cse6 |ULTIMATE.start_main_~a~0#1|) (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8))) (.cse4 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse3 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse3)) (and .cse0 .cse4 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| (+ .cse5 .cse6)) (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse4 .cse2 (forall ((|ULTIMATE.start_main_~q~0#1| Int)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse3)))))) [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 59) the Hoare annotation is: true [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-15 20:41:30,846 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-02-15 20:41:30,846 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2023-02-15 20:41:30,846 INFO L902 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2023-02-15 20:41:30,846 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|))) (let ((.cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse2 .cse3)))) (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ .cse2 .cse3 |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) .cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse5))) (and .cse4 .cse6 (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 (forall ((|ULTIMATE.start_main_~q~0#1| Int)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) .cse5)) .cse7)))) [2023-02-15 20:41:30,847 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-15 20:41:30,847 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)))) [2023-02-15 20:41:30,847 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:41:30,847 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-02-15 20:41:30,851 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-02-15 20:41:30,854 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:41:30,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:41:30 BoogieIcfgContainer [2023-02-15 20:41:30,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:41:30,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:41:30,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:41:30,865 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:41:30,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:41:19" (3/4) ... [2023-02-15 20:41:30,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:41:30,870 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 20:41:30,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:41:30,874 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 20:41:30,874 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 20:41:30,874 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:41:30,874 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:41:30,900 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:41:30,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:41:30,901 INFO L158 Benchmark]: Toolchain (without parser) took 12254.89ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 126.9MB in the beginning and 161.2MB in the end (delta: -34.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,901 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory was 108.6MB in the beginning and 108.4MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:41:30,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.00ms. Allocated memory is still 163.6MB. Free memory was 126.7MB in the beginning and 115.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.90ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 114.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:41:30,902 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 163.6MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,902 INFO L158 Benchmark]: RCFGBuilder took 252.66ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 101.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,902 INFO L158 Benchmark]: TraceAbstraction took 11768.36ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 100.9MB in the beginning and 164.4MB in the end (delta: -63.4MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,903 INFO L158 Benchmark]: Witness Printer took 35.94ms. Allocated memory is still 207.6MB. Free memory was 164.4MB in the beginning and 161.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:41:30,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory was 108.6MB in the beginning and 108.4MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.00ms. Allocated memory is still 163.6MB. Free memory was 126.7MB in the beginning and 115.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.90ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 114.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 163.6MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.66ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 101.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11768.36ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 100.9MB in the beginning and 164.4MB in the end (delta: -63.4MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. * Witness Printer took 35.94ms. Allocated memory is still 207.6MB. Free memory was 164.4MB in the beginning and 161.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 1068 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 793 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1077 IncrementalHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 275 mSDtfsCounter, 1077 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 516 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=7, InterpolantAutomatonStates: 60, 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, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 63 PreInvPairs, 111 NumberOfFragments, 487 HoareAnnotationTreeSize, 63 FomulaSimplifications, 49 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2666 FormulaSimplificationTreeSizeReductionInter, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 361 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 583 ConstructedInterpolants, 2 QuantifiedInterpolants, 1801 SizeOfPredicates, 39 NumberOfNonLiveVariables, 959 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 608/666 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((a == x * p + y * r && y * s + x * q + a == x * p + b + y * r) && 1 <= x) && q * r + 1 == s * p RESULT: Ultimate proved your program to be correct! [2023-02-15 20:41:30,927 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