./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/bresenham-ll_valuebound1.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 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 16:04:51,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 16:04:51,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 16:04:51,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 16:04:51,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 16:04:51,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 16:04:51,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 16:04:51,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 16:04:51,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 16:04:51,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 16:04:51,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 16:04:51,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 16:04:51,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 16:04:51,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 16:04:51,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 16:04:51,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 16:04:51,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 16:04:51,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 16:04:51,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 16:04:51,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 16:04:51,971 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 16:04:51,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 16:04:51,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 16:04:51,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 16:04:51,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 16:04:51,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 16:04:51,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 16:04:51,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 16:04:51,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 16:04:51,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 16:04:51,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 16:04:51,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 16:04:51,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 16:04:51,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 16:04:51,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 16:04:51,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 16:04:51,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 16:04:51,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 16:04:51,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 16:04:51,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 16:04:51,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 16:04:51,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 16:04:51,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 16:04:52,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 16:04:52,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 16:04:52,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 16:04:52,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 16:04:52,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 16:04:52,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 16:04:52,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 16:04:52,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 16:04:52,014 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 16:04:52,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 16:04:52,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 16:04:52,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 16:04:52,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 16:04:52,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 16:04:52,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 16:04:52,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 16:04:52,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 16:04:52,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 16:04:52,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:04:52,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 16:04:52,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 16:04:52,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 16:04:52,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 16:04:52,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 16:04:52,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 16:04:52,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 16:04:52,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 16:04:52,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 [2022-07-13 16:04:52,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 16:04:52,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 16:04:52,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 16:04:52,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 16:04:52,225 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 16:04:52,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-07-13 16:04:52,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e107b41d2/2f21fe3f7ddf4b67a5a84877e6932ecb/FLAG7689da0e2 [2022-07-13 16:04:52,640 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 16:04:52,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-07-13 16:04:52,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e107b41d2/2f21fe3f7ddf4b67a5a84877e6932ecb/FLAG7689da0e2 [2022-07-13 16:04:52,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e107b41d2/2f21fe3f7ddf4b67a5a84877e6932ecb [2022-07-13 16:04:52,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 16:04:52,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 16:04:52,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 16:04:52,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 16:04:52,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 16:04:52,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e50c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52, skipping insertion in model container [2022-07-13 16:04:52,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 16:04:52,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 16:04:52,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c[597,610] [2022-07-13 16:04:52,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:04:52,795 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 16:04:52,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c[597,610] [2022-07-13 16:04:52,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:04:52,816 INFO L208 MainTranslator]: Completed translation [2022-07-13 16:04:52,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52 WrapperNode [2022-07-13 16:04:52,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 16:04:52,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 16:04:52,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 16:04:52,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 16:04:52,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,836 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-13 16:04:52,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 16:04:52,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 16:04:52,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 16:04:52,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 16:04:52,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 16:04:52,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 16:04:52,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 16:04:52,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 16:04:52,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (1/1) ... [2022-07-13 16:04:52,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:04:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:52,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 16:04:52,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 16:04:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 16:04:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 16:04:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 16:04:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 16:04:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 16:04:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 16:04:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 16:04:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 16:04:52,957 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 16:04:52,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 16:04:53,046 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 16:04:53,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 16:04:53,050 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 16:04:53,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:04:53 BoogieIcfgContainer [2022-07-13 16:04:53,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 16:04:53,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 16:04:53,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 16:04:53,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 16:04:53,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 04:04:52" (1/3) ... [2022-07-13 16:04:53,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:04:53, skipping insertion in model container [2022-07-13 16:04:53,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:04:52" (2/3) ... [2022-07-13 16:04:53,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:04:53, skipping insertion in model container [2022-07-13 16:04:53,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:04:53" (3/3) ... [2022-07-13 16:04:53,059 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2022-07-13 16:04:53,068 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 16:04:53,070 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 16:04:53,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 16:04:53,132 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5dd2e6ba, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48697ca6 [2022-07-13 16:04:53,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 16:04:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 16:04:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 16:04:53,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:53,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:53,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2022-07-13 16:04:53,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:53,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436475100] [2022-07-13 16:04:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 16:04:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:53,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 16:04:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:04:53,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436475100] [2022-07-13 16:04:53,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436475100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:04:53,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:04:53,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 16:04:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480469373] [2022-07-13 16:04:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:04:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 16:04:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 16:04:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:04:53,332 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 16:04:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:53,343 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-07-13 16:04:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 16:04:53,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-13 16:04:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:53,349 INFO L225 Difference]: With dead ends: 51 [2022-07-13 16:04:53,349 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 16:04:53,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:04:53,353 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:53,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:04:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 16:04:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 16:04:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 16:04:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-13 16:04:53,380 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-07-13 16:04:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:53,380 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-13 16:04:53,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 16:04:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-13 16:04:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 16:04:53,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:53,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:53,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 16:04:53,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2022-07-13 16:04:53,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:53,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744475308] [2022-07-13 16:04:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:53,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:04:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537329758] [2022-07-13 16:04:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:53,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:04:53,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 16:04:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:53,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 16:04:53,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:04:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:04:53,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:04:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:53,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744475308] [2022-07-13 16:04:53,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:04:53,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537329758] [2022-07-13 16:04:53,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537329758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:04:53,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:04:53,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 16:04:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077716319] [2022-07-13 16:04:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:04:53,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 16:04:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 16:04:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 16:04:53,609 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:04:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:53,689 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-13 16:04:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 16:04:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-13 16:04:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:53,691 INFO L225 Difference]: With dead ends: 35 [2022-07-13 16:04:53,691 INFO L226 Difference]: Without dead ends: 31 [2022-07-13 16:04:53,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 16:04:53,693 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:04:53,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-13 16:04:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-07-13 16:04:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 16:04:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-13 16:04:53,698 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2022-07-13 16:04:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:53,699 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-13 16:04:53,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:04:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-13 16:04:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 16:04:53,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:53,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:53,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 16:04:53,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:53,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2022-07-13 16:04:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448974266] [2022-07-13 16:04:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:53,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:04:53,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629960544] [2022-07-13 16:04:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:53,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:53,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:53,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:04:53,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 16:04:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:53,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 16:04:53,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:04:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:04:54,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:04:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:04:54,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448974266] [2022-07-13 16:04:54,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:04:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629960544] [2022-07-13 16:04:54,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629960544] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:04:54,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:04:54,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2022-07-13 16:04:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151653552] [2022-07-13 16:04:54,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:04:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 16:04:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 16:04:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-13 16:04:54,477 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-13 16:04:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:54,956 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-07-13 16:04:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 16:04:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-07-13 16:04:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:54,957 INFO L225 Difference]: With dead ends: 62 [2022-07-13 16:04:54,957 INFO L226 Difference]: Without dead ends: 34 [2022-07-13 16:04:54,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-07-13 16:04:54,959 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 77 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 16:04:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-13 16:04:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-13 16:04:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 16:04:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-07-13 16:04:54,965 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2022-07-13 16:04:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:54,966 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-07-13 16:04:54,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-13 16:04:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-07-13 16:04:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 16:04:54,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:54,967 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:54,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 16:04:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 16:04:55,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2022-07-13 16:04:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11212462] [2022-07-13 16:04:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:55,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:04:55,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894909257] [2022-07-13 16:04:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:55,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:55,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:55,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:04:55,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 16:04:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 16:04:55,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:04:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 16:04:55,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:04:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 16:04:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11212462] [2022-07-13 16:04:56,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:04:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894909257] [2022-07-13 16:04:56,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894909257] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:04:56,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:04:56,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-07-13 16:04:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142069217] [2022-07-13 16:04:56,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:04:56,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 16:04:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 16:04:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-07-13 16:04:56,162 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-13 16:04:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:58,670 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-07-13 16:04:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 16:04:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2022-07-13 16:04:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:58,672 INFO L225 Difference]: With dead ends: 51 [2022-07-13 16:04:58,672 INFO L226 Difference]: Without dead ends: 43 [2022-07-13 16:04:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 16:04:58,673 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 141 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 16:04:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-13 16:04:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-07-13 16:04:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 16:04:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-07-13 16:04:58,682 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 35 [2022-07-13 16:04:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:58,682 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-07-13 16:04:58,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-13 16:04:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-07-13 16:04:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 16:04:58,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:58,684 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:58,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 16:04:58,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:58,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 1 times [2022-07-13 16:04:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:58,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613665426] [2022-07-13 16:04:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:58,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:04:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272746815] [2022-07-13 16:04:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:58,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:58,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:04:58,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 16:04:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:04:58,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 16:04:58,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:04:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 16:04:59,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:04:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 16:04:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:59,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613665426] [2022-07-13 16:04:59,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:04:59,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272746815] [2022-07-13 16:04:59,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272746815] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:04:59,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:04:59,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-07-13 16:04:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320687766] [2022-07-13 16:04:59,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:04:59,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 16:04:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 16:04:59,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 16:04:59,068 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-13 16:04:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:59,126 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2022-07-13 16:04:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 16:04:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 53 [2022-07-13 16:04:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:59,128 INFO L225 Difference]: With dead ends: 69 [2022-07-13 16:04:59,128 INFO L226 Difference]: Without dead ends: 54 [2022-07-13 16:04:59,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 16:04:59,129 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:04:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-13 16:04:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-07-13 16:04:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 16:04:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-07-13 16:04:59,136 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 53 [2022-07-13 16:04:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:59,137 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-07-13 16:04:59,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-13 16:04:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-07-13 16:04:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 16:04:59,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:04:59,138 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:04:59,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 16:04:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:59,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:04:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:04:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash -396725760, now seen corresponding path program 2 times [2022-07-13 16:04:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:04:59,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563557422] [2022-07-13 16:04:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:04:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:04:59,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:04:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254990071] [2022-07-13 16:04:59,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 16:04:59,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:59,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:04:59,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:04:59,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 16:04:59,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 16:04:59,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 16:04:59,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 16:04:59,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:04:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 16:04:59,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:04:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 16:04:59,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:04:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563557422] [2022-07-13 16:04:59,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:04:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254990071] [2022-07-13 16:04:59,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254990071] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:04:59,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:04:59,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-13 16:04:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111506446] [2022-07-13 16:04:59,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:04:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 16:04:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:04:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 16:04:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-13 16:04:59,568 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-13 16:04:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:04:59,624 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-07-13 16:04:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 16:04:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) Word has length 53 [2022-07-13 16:04:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:04:59,625 INFO L225 Difference]: With dead ends: 56 [2022-07-13 16:04:59,626 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 16:04:59,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-07-13 16:04:59,627 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:04:59,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 61 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:04:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 16:04:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 16:04:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:04:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 16:04:59,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-07-13 16:04:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:04:59,628 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 16:04:59,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-13 16:04:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 16:04:59,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 16:04:59,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 16:04:59,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 16:04:59,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:04:59,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 16:05:01,009 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 16:05:01,009 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 1) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2022-07-13 16:05:01,009 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-13 16:05:01,009 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-13 16:05:01,010 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-13 16:05:01,010 INFO L902 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2022-07-13 16:05:01,010 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse1)) (<= |ULTIMATE.start_main_~Y~0#1| 1) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 1) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse0 .cse2 .cse1)) (<= 0 |ULTIMATE.start_main_~X~0#1|))) (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse1 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)))) [2022-07-13 16:05:01,010 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-07-13 16:05:01,010 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-07-13 16:05:01,010 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-07-13 16:05:01,010 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 16:05:01,011 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse8 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse4 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse10 (* |ULTIMATE.start_main_~Y~0#1| 4)) (.cse5 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|))) (let ((.cse0 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse6 (<= 0 |ULTIMATE.start_main_~X~0#1|)) (.cse9 (<= (div |ULTIMATE.start_main_~v~0#1| (- 2)) |ULTIMATE.start_main_~Y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse12 (= .cse10 .cse5)) (.cse7 (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse8 .cse4))) (.cse13 (< .cse4 |ULTIMATE.start_main_~X~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~Y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~X~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= .cse4 .cse5) .cse6 (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse7 .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse8 .cse4)) .cse6 .cse9) (and .cse0 (= .cse10 (+ |ULTIMATE.start_main_~v~0#1| (* 3 |ULTIMATE.start_main_~X~0#1|))) .cse2 .cse11 (= |ULTIMATE.start_main_~y~0#1| 1) .cse6 .cse9) (and .cse12 .cse13 (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse4)) .cse1 .cse2 .cse11 .cse3) (and (= |ULTIMATE.start_main_~yx~0#1| |ULTIMATE.start_main_~Y~0#1|) .cse12 .cse7 (= |ULTIMATE.start_main_~xy~0#1| 0) .cse13 .cse1 .cse2)))) [2022-07-13 16:05:01,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 16:05:01,011 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-07-13 16:05:01,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 16:05:01,011 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse7 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse9 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse12 (* .cse7 2)) (.cse4 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse0 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse1 (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse4))) (.cse6 (<= 0 |ULTIMATE.start_main_~X~0#1|)) (.cse10 (<= (div |ULTIMATE.start_main_~v~0#1| (- 2)) |ULTIMATE.start_main_~Y~0#1|)) (.cse8 (* |ULTIMATE.start_main_~Y~0#1| 4)) (.cse5 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse11 (= (+ (* .cse9 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse12 .cse4))) (.cse2 (<= 0 |ULTIMATE.start_main_~Y~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~X~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse4 .cse5) .cse6 (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (and (<= .cse7 |ULTIMATE.start_main_~yx~0#1|) .cse0 .cse1 (= .cse8 (+ |ULTIMATE.start_main_~v~0#1| (* 3 |ULTIMATE.start_main_~X~0#1|))) .cse3 (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (<= |ULTIMATE.start_main_~xy~0#1| .cse9) .cse6 .cse10) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse11 .cse0 .cse1 .cse2 .cse3 (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse12 .cse4)) .cse6 .cse10) (and (= |ULTIMATE.start_main_~yx~0#1| |ULTIMATE.start_main_~Y~0#1|) (= .cse8 .cse5) .cse11 (= |ULTIMATE.start_main_~xy~0#1| 0) (< .cse4 |ULTIMATE.start_main_~X~0#1|) .cse2 .cse3))))) [2022-07-13 16:05:01,011 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-07-13 16:05:01,011 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-07-13 16:05:01,011 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-07-13 16:05:01,012 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-13 16:05:01,014 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-07-13 16:05:01,016 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 16:05:01,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 04:05:01 BoogieIcfgContainer [2022-07-13 16:05:01,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 16:05:01,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 16:05:01,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 16:05:01,029 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 16:05:01,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:04:53" (3/4) ... [2022-07-13 16:05:01,032 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 16:05:01,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-13 16:05:01,036 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 16:05:01,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-13 16:05:01,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 16:05:01,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 16:05:01,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 16:05:01,060 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 16:05:01,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 16:05:01,060 INFO L158 Benchmark]: Toolchain (without parser) took 8399.01ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 81.5MB in the beginning and 55.4MB in the end (delta: 26.1MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,061 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:05:01,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.39ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 71.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.47ms. Allocated memory is still 104.9MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:05:01,061 INFO L158 Benchmark]: Boogie Preprocessor took 17.07ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 68.8MB in the end (delta: 996.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,062 INFO L158 Benchmark]: RCFGBuilder took 196.96ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 58.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,062 INFO L158 Benchmark]: TraceAbstraction took 7976.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 58.2MB in the beginning and 58.6MB in the end (delta: -389.5kB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,062 INFO L158 Benchmark]: Witness Printer took 30.83ms. Allocated memory is still 125.8MB. Free memory was 57.5MB in the beginning and 55.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:05:01,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.39ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 71.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.47ms. Allocated memory is still 104.9MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.07ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 68.8MB in the end (delta: 996.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 196.96ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 58.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7976.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 58.2MB in the beginning and 58.6MB in the end (delta: -389.5kB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * Witness Printer took 30.83ms. Allocated memory is still 125.8MB. Free memory was 57.5MB in the beginning and 55.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 812 IncrementalHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 127 mSDtfsCounter, 812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 298 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 28 PreInvPairs, 46 NumberOfFragments, 515 HoareAnnotationTreeSize, 28 FomulaSimplifications, 71 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 589 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 366 ConstructedInterpolants, 0 QuantifiedInterpolants, 1888 SizeOfPredicates, 21 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 251/294 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: 32]: Loop Invariant Derived loop invariant: (((((((((Y <= 1 && 0 <= Y) && X <= 1) && y == 0) && 2 * Y == X + v) && 0 <= X) && x == 0) || (((((((2 <= x && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && Y <= 1) && 0 <= Y) && X <= 1) && X + v + 2 * (x * y) == 2 * y + Y * x * 2 + 2 * Y) && 0 <= X) && v / -2 <= Y)) || ((((((Y <= 1 && Y * 4 == v + 3 * X) && X <= 1) && x == 1) && y == 1) && 0 <= X) && v / -2 <= Y)) || ((((((Y * 4 == X + v && 2 * Y < X) && X + v + 2 * xy == 2 * yx + 2 * Y) && 0 <= Y) && X <= 1) && x == 1) && y == 0)) || ((((((yx == Y && Y * 4 == X + v) && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && xy == 0) && 2 * Y < X) && 0 <= Y) && X <= 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 16:05:01,097 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