./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:42:22,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:42:22,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:42:22,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:42:22,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:42:22,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:42:22,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:42:22,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:42:22,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:42:22,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:42:22,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:42:22,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:42:22,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:42:22,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:42:22,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:42:22,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:42:22,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:42:22,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:42:22,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:42:22,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:42:22,920 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:42:22,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:42:22,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:42:22,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:42:22,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:42:22,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:42:22,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:42:22,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:42:22,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:42:22,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:42:22,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:42:22,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:42:22,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:42:22,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:42:22,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:42:22,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:42:22,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:42:22,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:42:22,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:42:22,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:42:22,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:42:22,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:42:22,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:42:22,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:42:22,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:42:22,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:42:22,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:42:22,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:42:22,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:42:22,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:42:22,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:42:22,960 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:42:22,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:42:22,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:42:22,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:42:22,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:42:22,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:42:22,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:42:22,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:42:22,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:42:22,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:42:22,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:42:22,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:42:22,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:42:22,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:42:22,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:42:22,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:42:22,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:42:22,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:42:22,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:42:22,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:42:22,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:42:22,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:42:22,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:42:22,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:42:22,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:42:22,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2022-07-12 04:42:23,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:42:23,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:42:23,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:42:23,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:42:23,227 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:42:23,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-07-12 04:42:23,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb45b7ce/ff79482e993e4c5b92ea6a73f986abfd/FLAG231ba6d4a [2022-07-12 04:42:23,605 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:42:23,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-07-12 04:42:23,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb45b7ce/ff79482e993e4c5b92ea6a73f986abfd/FLAG231ba6d4a [2022-07-12 04:42:24,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb45b7ce/ff79482e993e4c5b92ea6a73f986abfd [2022-07-12 04:42:24,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:42:24,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:42:24,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:42:24,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:42:24,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:42:24,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5978f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24, skipping insertion in model container [2022-07-12 04:42:24,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:42:24,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:42:24,170 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/egcd2-ll_valuebound2.c[490,503] [2022-07-12 04:42:24,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:42:24,198 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:42:24,206 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/egcd2-ll_valuebound2.c[490,503] [2022-07-12 04:42:24,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:42:24,227 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:42:24,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24 WrapperNode [2022-07-12 04:42:24,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:42:24,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:42:24,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:42:24,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:42:24,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,268 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-07-12 04:42:24,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:42:24,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:42:24,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:42:24,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:42:24,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:42:24,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:42:24,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:42:24,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:42:24,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (1/1) ... [2022-07-12 04:42:24,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:42:24,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:24,323 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) [2022-07-12 04:42:24,329 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 [2022-07-12 04:42:24,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:42:24,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 04:42:24,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 04:42:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:42:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:42:24,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:42:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:42:24,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:42:24,404 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:42:24,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:42:24,539 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:42:24,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:42:24,544 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 04:42:24,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:42:24 BoogieIcfgContainer [2022-07-12 04:42:24,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:42:24,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:42:24,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:42:24,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:42:24,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:42:24" (1/3) ... [2022-07-12 04:42:24,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ea1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:42:24, skipping insertion in model container [2022-07-12 04:42:24,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:42:24" (2/3) ... [2022-07-12 04:42:24,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ea1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:42:24, skipping insertion in model container [2022-07-12 04:42:24,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:42:24" (3/3) ... [2022-07-12 04:42:24,557 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-07-12 04:42:24,572 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:42:24,572 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:42:24,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:42:24,615 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@309735da, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b94a735 [2022-07-12 04:42:24,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:42:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-12 04:42:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 04:42:24,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:24,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:24,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2022-07-12 04:42:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:24,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11633741] [2022-07-12 04:42:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 04:42:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 04:42:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 04:42:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 04:42:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 04:42:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 04:42:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:42:24,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:24,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11633741] [2022-07-12 04:42:24,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11633741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:42:24,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:42:24,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:42:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280616880] [2022-07-12 04:42:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:42:24,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:42:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:42:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:42:24,850 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:42:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:24,874 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2022-07-12 04:42:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:42:24,876 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-07-12 04:42:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:24,881 INFO L225 Difference]: With dead ends: 67 [2022-07-12 04:42:24,881 INFO L226 Difference]: Without dead ends: 31 [2022-07-12 04:42:24,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:42:24,887 INFO L413 NwaCegarLoop]: 46 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, 46 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 [2022-07-12 04:42:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:42:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-12 04:42:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-12 04:42:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 04:42:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-07-12 04:42:24,914 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2022-07-12 04:42:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:24,914 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-07-12 04:42:24,915 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:42:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-07-12 04:42:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 04:42:24,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:24,916 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:42:24,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2022-07-12 04:42:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692166492] [2022-07-12 04:42:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:24,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:24,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448245529] [2022-07-12 04:42:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:24,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:24,959 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) [2022-07-12 04:42:24,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 04:42:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:25,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:42:25,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 04:42:25,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 04:42:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:25,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692166492] [2022-07-12 04:42:25,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:25,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448245529] [2022-07-12 04:42:25,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448245529] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:25,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:25,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-07-12 04:42:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705713021] [2022-07-12 04:42:25,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:25,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:42:25,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:42:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 04:42:25,222 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:42:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:25,328 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-07-12 04:42:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:42:25,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-07-12 04:42:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:25,330 INFO L225 Difference]: With dead ends: 48 [2022-07-12 04:42:25,330 INFO L226 Difference]: Without dead ends: 40 [2022-07-12 04:42:25,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-12 04:42:25,331 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:25,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 108 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:42:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-12 04:42:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-07-12 04:42:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 04:42:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-07-12 04:42:25,339 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2022-07-12 04:42:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:25,339 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-07-12 04:42:25,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:42:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-07-12 04:42:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 04:42:25,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:25,340 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:25,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:25,555 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 [2022-07-12 04:42:25,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2022-07-12 04:42:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:25,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313383214] [2022-07-12 04:42:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:25,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300646725] [2022-07-12 04:42:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:25,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:25,576 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) [2022-07-12 04:42:25,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 04:42:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:25,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 04:42:25,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 04:42:25,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:42:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313383214] [2022-07-12 04:42:25,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300646725] [2022-07-12 04:42:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300646725] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:25,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-07-12 04:42:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423148514] [2022-07-12 04:42:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:42:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:42:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:42:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:42:25,818 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 04:42:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:25,863 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-07-12 04:42:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:42:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2022-07-12 04:42:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:25,866 INFO L225 Difference]: With dead ends: 39 [2022-07-12 04:42:25,866 INFO L226 Difference]: Without dead ends: 37 [2022-07-12 04:42:25,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:42:25,870 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:25,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:42:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-12 04:42:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-12 04:42:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 04:42:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-07-12 04:42:25,882 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 41 [2022-07-12 04:42:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:25,883 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-07-12 04:42:25,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 04:42:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-07-12 04:42:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 04:42:25,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:25,885 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:25,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:26,096 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 [2022-07-12 04:42:26,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2022-07-12 04:42:26,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:26,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650454337] [2022-07-12 04:42:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:26,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:26,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846524201] [2022-07-12 04:42:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:26,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:26,116 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) [2022-07-12 04:42:26,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 04:42:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:26,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 04:42:26,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 04:42:26,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:42:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:26,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650454337] [2022-07-12 04:42:26,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:26,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846524201] [2022-07-12 04:42:26,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846524201] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:26,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:26,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-07-12 04:42:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948217713] [2022-07-12 04:42:26,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:42:26,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 04:42:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 04:42:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:42:26,521 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 04:42:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:26,581 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-07-12 04:42:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:42:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2022-07-12 04:42:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:26,586 INFO L225 Difference]: With dead ends: 50 [2022-07-12 04:42:26,586 INFO L226 Difference]: Without dead ends: 48 [2022-07-12 04:42:26,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-12 04:42:26,589 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:26,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 137 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:42:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-12 04:42:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-07-12 04:42:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:42:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-07-12 04:42:26,623 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 46 [2022-07-12 04:42:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:26,624 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-07-12 04:42:26,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 04:42:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-07-12 04:42:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 04:42:26,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:26,625 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:26,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:26,825 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 [2022-07-12 04:42:26,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 779090230, now seen corresponding path program 1 times [2022-07-12 04:42:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:26,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284293416] [2022-07-12 04:42:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:26,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:26,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34118738] [2022-07-12 04:42:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:26,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:26,843 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) [2022-07-12 04:42:26,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 04:42:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:26,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 04:42:26,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 04:42:27,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 04:42:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284293416] [2022-07-12 04:42:27,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34118738] [2022-07-12 04:42:27,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34118738] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:27,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:27,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-07-12 04:42:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116311875] [2022-07-12 04:42:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:42:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 04:42:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 04:42:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:42:27,201 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:42:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:27,265 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-07-12 04:42:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:42:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2022-07-12 04:42:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:27,266 INFO L225 Difference]: With dead ends: 54 [2022-07-12 04:42:27,266 INFO L226 Difference]: Without dead ends: 52 [2022-07-12 04:42:27,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-12 04:42:27,267 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:27,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 152 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:42:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-12 04:42:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-07-12 04:42:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:42:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-07-12 04:42:27,273 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 51 [2022-07-12 04:42:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:27,273 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-07-12 04:42:27,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:42:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-07-12 04:42:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 04:42:27,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:27,274 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:27,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:27,492 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 [2022-07-12 04:42:27,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2022-07-12 04:42:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:27,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309380822] [2022-07-12 04:42:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:27,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:27,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935442843] [2022-07-12 04:42:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:27,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:27,502 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) [2022-07-12 04:42:27,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 04:42:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 04:42:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 04:42:27,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:27,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:27,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309380822] [2022-07-12 04:42:27,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:27,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935442843] [2022-07-12 04:42:27,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935442843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:27,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:27,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-12 04:42:27,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478313709] [2022-07-12 04:42:27,889 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 04:42:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 04:42:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:42:27,890 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 04:42:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:28,071 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-07-12 04:42:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 04:42:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2022-07-12 04:42:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:28,072 INFO L225 Difference]: With dead ends: 60 [2022-07-12 04:42:28,072 INFO L226 Difference]: Without dead ends: 58 [2022-07-12 04:42:28,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-12 04:42:28,073 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 110 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:42:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-12 04:42:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-07-12 04:42:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:42:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2022-07-12 04:42:28,078 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 56 [2022-07-12 04:42:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:28,079 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-07-12 04:42:28,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 04:42:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2022-07-12 04:42:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 04:42:28,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:28,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:28,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:28,297 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 [2022-07-12 04:42:28,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:28,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2022-07-12 04:42:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:28,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554172013] [2022-07-12 04:42:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:28,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:28,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712015781] [2022-07-12 04:42:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:28,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:28,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:28,317 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 04:42:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:28,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:42:28,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 04:42:28,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 04:42:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:28,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554172013] [2022-07-12 04:42:28,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:28,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712015781] [2022-07-12 04:42:28,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712015781] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:28,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:28,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-12 04:42:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933975217] [2022-07-12 04:42:28,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:28,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 04:42:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 04:42:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 04:42:28,455 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 04:42:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:28,600 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-07-12 04:42:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 04:42:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2022-07-12 04:42:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:28,601 INFO L225 Difference]: With dead ends: 102 [2022-07-12 04:42:28,601 INFO L226 Difference]: Without dead ends: 94 [2022-07-12 04:42:28,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-12 04:42:28,602 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 30 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:28,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 231 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:42:28,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-12 04:42:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-07-12 04:42:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-12 04:42:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2022-07-12 04:42:28,617 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2022-07-12 04:42:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:28,618 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2022-07-12 04:42:28,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 04:42:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2022-07-12 04:42:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 04:42:28,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:28,619 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:28,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:28,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:28,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:28,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2022-07-12 04:42:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:28,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765549713] [2022-07-12 04:42:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:28,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422139347] [2022-07-12 04:42:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:28,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:28,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 04:42:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:28,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 04:42:28,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 04:42:28,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 04:42:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:29,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765549713] [2022-07-12 04:42:29,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:29,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422139347] [2022-07-12 04:42:29,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422139347] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:29,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:29,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-07-12 04:42:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041225085] [2022-07-12 04:42:29,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:29,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 04:42:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 04:42:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:42:29,059 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-12 04:42:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:29,385 INFO L93 Difference]: Finished difference Result 128 states and 183 transitions. [2022-07-12 04:42:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 04:42:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 71 [2022-07-12 04:42:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:29,389 INFO L225 Difference]: With dead ends: 128 [2022-07-12 04:42:29,389 INFO L226 Difference]: Without dead ends: 124 [2022-07-12 04:42:29,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-12 04:42:29,390 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 39 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:29,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 223 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:42:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-12 04:42:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2022-07-12 04:42:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 04:42:29,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2022-07-12 04:42:29,402 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 71 [2022-07-12 04:42:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:29,402 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2022-07-12 04:42:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-12 04:42:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2022-07-12 04:42:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 04:42:29,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:29,403 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:29,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:29,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2022-07-12 04:42:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:29,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742911303] [2022-07-12 04:42:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:29,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:29,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930723621] [2022-07-12 04:42:29,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:42:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:29,616 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:29,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 04:42:29,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:42:29,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:29,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 04:42:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 04:42:30,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-12 04:42:30,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:30,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742911303] [2022-07-12 04:42:30,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:30,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930723621] [2022-07-12 04:42:30,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930723621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:30,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:30,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2022-07-12 04:42:30,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031022233] [2022-07-12 04:42:30,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:30,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 04:42:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 04:42:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:42:30,321 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand has 17 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 04:42:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:34,288 INFO L93 Difference]: Finished difference Result 228 states and 336 transitions. [2022-07-12 04:42:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 04:42:34,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) Word has length 76 [2022-07-12 04:42:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:34,290 INFO L225 Difference]: With dead ends: 228 [2022-07-12 04:42:34,290 INFO L226 Difference]: Without dead ends: 226 [2022-07-12 04:42:34,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 04:42:34,291 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 121 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:34,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 290 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 04:42:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-12 04:42:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 177. [2022-07-12 04:42:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 100 states have internal predecessors, (118), 69 states have call successors, (69), 10 states have call predecessors, (69), 10 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-07-12 04:42:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 255 transitions. [2022-07-12 04:42:34,315 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 255 transitions. Word has length 76 [2022-07-12 04:42:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:34,316 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 255 transitions. [2022-07-12 04:42:34,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 04:42:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 255 transitions. [2022-07-12 04:42:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 04:42:34,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:34,317 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:34,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:34,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 04:42:34,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2022-07-12 04:42:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:34,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136701013] [2022-07-12 04:42:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:34,544 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:34,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167669486] [2022-07-12 04:42:34,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:42:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:34,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:34,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 04:42:34,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 04:42:34,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:34,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 04:42:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-12 04:42:35,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:35,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136701013] [2022-07-12 04:42:35,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:35,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167669486] [2022-07-12 04:42:35,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167669486] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:35,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:35,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-07-12 04:42:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385654208] [2022-07-12 04:42:35,453 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 04:42:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 04:42:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:42:35,454 INFO L87 Difference]: Start difference. First operand 177 states and 255 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 04:42:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:36,108 INFO L93 Difference]: Finished difference Result 209 states and 294 transitions. [2022-07-12 04:42:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 04:42:36,108 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 81 [2022-07-12 04:42:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:36,110 INFO L225 Difference]: With dead ends: 209 [2022-07-12 04:42:36,110 INFO L226 Difference]: Without dead ends: 207 [2022-07-12 04:42:36,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-07-12 04:42:36,111 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:36,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 145 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:42:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-12 04:42:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2022-07-12 04:42:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 77 states have call successors, (77), 13 states have call predecessors, (77), 13 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2022-07-12 04:42:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 289 transitions. [2022-07-12 04:42:36,145 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 289 transitions. Word has length 81 [2022-07-12 04:42:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:36,145 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 289 transitions. [2022-07-12 04:42:36,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 04:42:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 289 transitions. [2022-07-12 04:42:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 04:42:36,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:36,146 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:36,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 04:42:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 04:42:36,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2022-07-12 04:42:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:36,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582711652] [2022-07-12 04:42:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:36,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:36,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663508108] [2022-07-12 04:42:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:36,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:36,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:36,362 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:36,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 04:42:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:36,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-12 04:42:36,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 04:42:36,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 04:42:36,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:36,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582711652] [2022-07-12 04:42:36,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:36,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663508108] [2022-07-12 04:42:36,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663508108] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:36,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:36,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-12 04:42:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695339195] [2022-07-12 04:42:36,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:36,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 04:42:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 04:42:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 04:42:36,910 INFO L87 Difference]: Start difference. First operand 204 states and 289 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 04:42:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:39,144 INFO L93 Difference]: Finished difference Result 316 states and 462 transitions. [2022-07-12 04:42:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 04:42:39,145 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 87 [2022-07-12 04:42:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:39,149 INFO L225 Difference]: With dead ends: 316 [2022-07-12 04:42:39,150 INFO L226 Difference]: Without dead ends: 308 [2022-07-12 04:42:39,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2022-07-12 04:42:39,151 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 54 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:39,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 283 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 04:42:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-12 04:42:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-07-12 04:42:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 123 states have call successors, (123), 16 states have call predecessors, (123), 16 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-07-12 04:42:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 445 transitions. [2022-07-12 04:42:39,208 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 445 transitions. Word has length 87 [2022-07-12 04:42:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:39,209 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 445 transitions. [2022-07-12 04:42:39,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 04:42:39,209 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 445 transitions. [2022-07-12 04:42:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 04:42:39,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:39,210 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:39,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 04:42:39,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2022-07-12 04:42:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:39,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232732748] [2022-07-12 04:42:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:39,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:39,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:39,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900365117] [2022-07-12 04:42:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:39,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:39,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:39,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:39,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 04:42:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:42:39,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 04:42:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 04:42:39,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-12 04:42:39,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:39,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232732748] [2022-07-12 04:42:39,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:39,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900365117] [2022-07-12 04:42:39,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900365117] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:39,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:39,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-07-12 04:42:39,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717423011] [2022-07-12 04:42:39,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 04:42:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 04:42:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:42:39,712 INFO L87 Difference]: Start difference. First operand 304 states and 445 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-12 04:42:40,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:40,030 INFO L93 Difference]: Finished difference Result 397 states and 577 transitions. [2022-07-12 04:42:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 04:42:40,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 103 [2022-07-12 04:42:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:40,034 INFO L225 Difference]: With dead ends: 397 [2022-07-12 04:42:40,034 INFO L226 Difference]: Without dead ends: 276 [2022-07-12 04:42:40,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2022-07-12 04:42:40,035 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 39 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:40,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 239 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:42:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-12 04:42:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2022-07-12 04:42:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 150 states have internal predecessors, (180), 111 states have call successors, (111), 14 states have call predecessors, (111), 14 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-07-12 04:42:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 401 transitions. [2022-07-12 04:42:40,089 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 401 transitions. Word has length 103 [2022-07-12 04:42:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:40,090 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 401 transitions. [2022-07-12 04:42:40,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-12 04:42:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 401 transitions. [2022-07-12 04:42:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 04:42:40,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:40,092 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:40,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 04:42:40,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash -992204181, now seen corresponding path program 4 times [2022-07-12 04:42:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:40,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870657566] [2022-07-12 04:42:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:40,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:40,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870759726] [2022-07-12 04:42:40,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 04:42:40,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:40,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:40,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 04:42:40,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 04:42:40,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:40,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 04:42:40,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 04:42:40,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:42:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:40,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870657566] [2022-07-12 04:42:40,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:40,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870759726] [2022-07-12 04:42:40,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870759726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:42:40,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:42:40,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:42:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888194425] [2022-07-12 04:42:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:42:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:42:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:42:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:42:40,394 INFO L87 Difference]: Start difference. First operand 275 states and 401 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 04:42:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:40,471 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2022-07-12 04:42:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:42:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 106 [2022-07-12 04:42:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:40,472 INFO L225 Difference]: With dead ends: 367 [2022-07-12 04:42:40,472 INFO L226 Difference]: Without dead ends: 194 [2022-07-12 04:42:40,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 04:42:40,474 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:40,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 145 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:42:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-12 04:42:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2022-07-12 04:42:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 93 states have internal predecessors, (104), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-07-12 04:42:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2022-07-12 04:42:40,498 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 106 [2022-07-12 04:42:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:40,499 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2022-07-12 04:42:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 04:42:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2022-07-12 04:42:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 04:42:40,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:40,500 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:40,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-12 04:42:40,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 04:42:40,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash -397785577, now seen corresponding path program 2 times [2022-07-12 04:42:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:40,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992361932] [2022-07-12 04:42:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:40,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:40,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641603570] [2022-07-12 04:42:40,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:42:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:40,744 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:40,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 04:42:40,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:42:40,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:40,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 04:42:40,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-07-12 04:42:40,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-07-12 04:42:41,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992361932] [2022-07-12 04:42:41,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641603570] [2022-07-12 04:42:41,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641603570] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:41,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:41,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-07-12 04:42:41,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383675355] [2022-07-12 04:42:41,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:41,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 04:42:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 04:42:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-12 04:42:41,067 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-12 04:42:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:41,472 INFO L93 Difference]: Finished difference Result 207 states and 278 transitions. [2022-07-12 04:42:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 04:42:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 123 [2022-07-12 04:42:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:41,473 INFO L225 Difference]: With dead ends: 207 [2022-07-12 04:42:41,473 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 04:42:41,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-07-12 04:42:41,474 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:41,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 278 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:42:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 04:42:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-07-12 04:42:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 89 states have (on average 1.101123595505618) internal successors, (98), 90 states have internal predecessors, (98), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-07-12 04:42:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 223 transitions. [2022-07-12 04:42:41,499 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 223 transitions. Word has length 123 [2022-07-12 04:42:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:41,499 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 223 transitions. [2022-07-12 04:42:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-12 04:42:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 223 transitions. [2022-07-12 04:42:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 04:42:41,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:41,501 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:41,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:41,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 04:42:41,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1816082155, now seen corresponding path program 2 times [2022-07-12 04:42:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:41,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782457003] [2022-07-12 04:42:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:41,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:41,732 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8814733] [2022-07-12 04:42:41,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:42:41,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:41,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:41,734 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:41,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 04:42:41,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:42:41,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-12 04:42:41,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 146 proven. 133 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 04:42:43,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-07-12 04:42:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782457003] [2022-07-12 04:42:44,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8814733] [2022-07-12 04:42:44,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8814733] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:44,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:44,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 30 [2022-07-12 04:42:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80938709] [2022-07-12 04:42:44,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 04:42:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 04:42:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2022-07-12 04:42:44,280 INFO L87 Difference]: Start difference. First operand 167 states and 223 transitions. Second operand has 30 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 16 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-12 04:42:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:46,755 INFO L93 Difference]: Finished difference Result 237 states and 305 transitions. [2022-07-12 04:42:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 04:42:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 16 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) Word has length 134 [2022-07-12 04:42:46,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:46,759 INFO L225 Difference]: With dead ends: 237 [2022-07-12 04:42:46,759 INFO L226 Difference]: Without dead ends: 137 [2022-07-12 04:42:46,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 234 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=332, Invalid=1390, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 04:42:46,762 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 76 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:46,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 232 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 04:42:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-12 04:42:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2022-07-12 04:42:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 04:42:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2022-07-12 04:42:46,805 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 134 [2022-07-12 04:42:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:46,807 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2022-07-12 04:42:46,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.0) internal successors, (48), 21 states have internal predecessors, (48), 16 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-12 04:42:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2022-07-12 04:42:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 04:42:46,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:46,809 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:46,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:47,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 821448208, now seen corresponding path program 3 times [2022-07-12 04:42:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:47,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745856851] [2022-07-12 04:42:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:47,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:47,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264847539] [2022-07-12 04:42:47,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:42:47,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:47,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:47,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:47,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 04:42:47,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 04:42:47,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 04:42:47,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 109 proven. 38 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-07-12 04:42:48,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745856851] [2022-07-12 04:42:48,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264847539] [2022-07-12 04:42:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264847539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:48,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:48,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-12 04:42:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063953146] [2022-07-12 04:42:48,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 04:42:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 04:42:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-12 04:42:48,133 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 04:42:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:48,658 INFO L93 Difference]: Finished difference Result 135 states and 171 transitions. [2022-07-12 04:42:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 04:42:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 147 [2022-07-12 04:42:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:48,660 INFO L225 Difference]: With dead ends: 135 [2022-07-12 04:42:48,660 INFO L226 Difference]: Without dead ends: 133 [2022-07-12 04:42:48,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-07-12 04:42:48,661 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:48,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 164 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:42:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-12 04:42:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2022-07-12 04:42:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 04:42:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2022-07-12 04:42:48,682 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 147 [2022-07-12 04:42:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2022-07-12 04:42:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 04:42:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2022-07-12 04:42:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 04:42:48,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:48,699 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:48,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 04:42:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 04:42:48,915 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash 561484725, now seen corresponding path program 4 times [2022-07-12 04:42:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:48,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260563451] [2022-07-12 04:42:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:48,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:48,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195332190] [2022-07-12 04:42:48,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 04:42:48,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:48,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:48,933 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:48,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 04:42:49,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 04:42:49,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:49,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 04:42:49,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 331 proven. 125 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-07-12 04:42:49,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:49,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260563451] [2022-07-12 04:42:49,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:49,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195332190] [2022-07-12 04:42:49,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195332190] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:42:49,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:42:49,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-07-12 04:42:49,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546023427] [2022-07-12 04:42:49,554 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:49,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 04:42:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 04:42:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-07-12 04:42:49,556 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) [2022-07-12 04:42:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:50,287 INFO L93 Difference]: Finished difference Result 194 states and 258 transitions. [2022-07-12 04:42:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 04:42:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) Word has length 211 [2022-07-12 04:42:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:50,289 INFO L225 Difference]: With dead ends: 194 [2022-07-12 04:42:50,289 INFO L226 Difference]: Without dead ends: 138 [2022-07-12 04:42:50,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 04:42:50,290 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 36 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:50,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 428 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 04:42:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-12 04:42:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-07-12 04:42:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-12 04:42:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2022-07-12 04:42:50,321 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 211 [2022-07-12 04:42:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:50,322 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2022-07-12 04:42:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 10 states have call predecessors, (36), 11 states have call successors, (36) [2022-07-12 04:42:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2022-07-12 04:42:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 04:42:50,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:42:50,325 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 9, 9, 9, 9, 9, 9, 8, 8, 8, 6, 6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:42:50,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-12 04:42:50,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 04:42:50,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:42:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:42:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1804370764, now seen corresponding path program 5 times [2022-07-12 04:42:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:42:50,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326683035] [2022-07-12 04:42:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:42:50,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:42:50,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:42:50,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262136646] [2022-07-12 04:42:50,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 04:42:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:42:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:42:50,572 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:42:50,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 04:42:50,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-07-12 04:42:50,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:42:50,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 04:42:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:42:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 369 proven. 167 refuted. 0 times theorem prover too weak. 2043 trivial. 0 not checked. [2022-07-12 04:42:50,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:42:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 177 proven. 107 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2022-07-12 04:42:51,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:42:51,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326683035] [2022-07-12 04:42:51,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:42:51,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262136646] [2022-07-12 04:42:51,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262136646] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:42:51,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:42:51,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-07-12 04:42:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766251216] [2022-07-12 04:42:51,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:42:51,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 04:42:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:42:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 04:42:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-07-12 04:42:51,385 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 20 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (72), 19 states have call predecessors, (72), 20 states have call successors, (72) [2022-07-12 04:42:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:42:51,907 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2022-07-12 04:42:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 04:42:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 20 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (72), 19 states have call predecessors, (72), 20 states have call successors, (72) Word has length 233 [2022-07-12 04:42:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:42:51,908 INFO L225 Difference]: With dead ends: 144 [2022-07-12 04:42:51,909 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:42:51,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 04:42:51,910 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:42:51,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 231 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:42:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:42:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:42:51,911 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) [2022-07-12 04:42:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:42:51,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 233 [2022-07-12 04:42:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:42:51,912 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:42:51,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 20 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (72), 19 states have call predecessors, (72), 20 states have call successors, (72) [2022-07-12 04:42:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:42:51,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:42:51,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:42:51,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 04:42:52,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 04:42:52,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:43:01,234 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse21 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= .cse21 |ULTIMATE.start_main_~a~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse19 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse14 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse18 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse5 .cse16 .cse6 .cse17 .cse18 .cse7 .cse9) (and .cse12 .cse19 .cse13 .cse14 .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 .cse4 (= .cse21 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse6 .cse7 .cse8 (<= .cse20 2) .cse9 .cse10 .cse11) (and .cse12 .cse19 .cse13 .cse14 (= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7)))) [2022-07-12 04:43:01,234 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse21 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= .cse21 |ULTIMATE.start_main_~a~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse19 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse14 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse18 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse5 .cse16 .cse6 .cse17 .cse18 .cse7 .cse9) (and .cse12 .cse19 .cse13 .cse14 .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 .cse4 (= .cse21 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse6 .cse7 .cse8 (<= .cse20 2) .cse9 .cse10 .cse11) (and .cse12 .cse19 .cse13 .cse14 (= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7)))) [2022-07-12 04:43:01,234 INFO L902 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2022-07-12 04:43:01,234 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:43:01,234 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:43:01,234 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:43:01,234 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-07-12 04:43:01,234 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-07-12 04:43:01,234 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse21 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= .cse21 |ULTIMATE.start_main_~a~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse19 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse14 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse18 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse5 .cse16 .cse6 .cse17 .cse18 .cse7 .cse9) (and .cse12 .cse19 .cse13 .cse14 .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 .cse4 (= .cse21 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse6 .cse7 .cse8 (<= .cse20 2) .cse9 .cse10 .cse11) (and .cse12 .cse19 .cse13 .cse14 (= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7)))) [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse0 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse5 (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse7 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse4 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5 .cse6 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse7 (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (< (* 2 |ULTIMATE.start_main_~b~0#1|) 2) .cse1 .cse2 .cse4 .cse5 .cse6) (and .cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse3 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse4))) [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (or (= .cse0 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (= .cse1 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= .cse1 0))) [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse21 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse13 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse16 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse18 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse19 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse9 (= .cse21 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 .cse15 .cse2 .cse16 .cse17 .cse6 .cse18 .cse19 .cse7 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 .cse4 (= .cse21 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse6 .cse7 .cse8 (<= .cse20 2) .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 .cse15 (= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse2 .cse16 .cse17 .cse6 .cse18 .cse19 .cse7) (and .cse12 .cse14 .cse15 .cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse5 .cse17 .cse6 .cse18 .cse19 .cse7 .cse9)))) [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse21 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= .cse21 |ULTIMATE.start_main_~a~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse19 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse14 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse18 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse5 .cse16 .cse6 .cse17 .cse18 .cse7 .cse9) (and .cse12 .cse19 .cse13 .cse14 .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (and .cse0 .cse1 .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 .cse4 (= .cse21 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse6 .cse7 .cse8 (<= .cse20 2) .cse9 .cse10 .cse11) (and .cse12 .cse19 .cse13 .cse14 (= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse2 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7)))) [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-07-12 04:43:01,235 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-07-12 04:43:01,236 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-12 04:43:01,238 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:43:01,240 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:43:01,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:43:01 BoogieIcfgContainer [2022-07-12 04:43:01,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:43:01,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:43:01,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:43:01,266 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:43:01,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:42:24" (3/4) ... [2022-07-12 04:43:01,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:43:01,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-12 04:43:01,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:43:01,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-12 04:43:01,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:43:01,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:43:01,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:43:01,307 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:43:01,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:43:01,308 INFO L158 Benchmark]: Toolchain (without parser) took 37269.85ms. Allocated memory was 81.8MB in the beginning and 148.9MB in the end (delta: 67.1MB). Free memory was 43.2MB in the beginning and 84.9MB in the end (delta: -41.7MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,308 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:43:01,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.47ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 43.0MB in the beginning and 80.4MB in the end (delta: -37.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.98ms. Allocated memory is still 102.8MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:43:01,309 INFO L158 Benchmark]: Boogie Preprocessor took 17.62ms. Allocated memory is still 102.8MB. Free memory was 79.0MB in the beginning and 77.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,309 INFO L158 Benchmark]: RCFGBuilder took 256.25ms. Allocated memory is still 102.8MB. Free memory was 77.6MB in the beginning and 66.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,309 INFO L158 Benchmark]: TraceAbstraction took 36714.76ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 65.8MB in the beginning and 88.0MB in the end (delta: -22.2MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,309 INFO L158 Benchmark]: Witness Printer took 41.12ms. Allocated memory is still 148.9MB. Free memory was 88.0MB in the beginning and 84.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:43:01,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.47ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 43.0MB in the beginning and 80.4MB in the end (delta: -37.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.98ms. Allocated memory is still 102.8MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.62ms. Allocated memory is still 102.8MB. Free memory was 79.0MB in the beginning and 77.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.25ms. Allocated memory is still 102.8MB. Free memory was 77.6MB in the beginning and 66.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 36714.76ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 65.8MB in the beginning and 88.0MB in the end (delta: -22.2MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. * Witness Printer took 41.12ms. Allocated memory is still 148.9MB. Free memory was 88.0MB in the beginning and 84.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.6s, OverallIterations: 18, TraceHistogramMax: 35, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 718 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 630 mSDsluCounter, 3563 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2709 mSDsCounter, 1058 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5922 IncrementalHoareTripleChecker+Invalid, 6980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1058 mSolverCounterUnsat, 854 mSDtfsCounter, 5922 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3025 GetRequests, 2664 SyntacticMatches, 19 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=11, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 145 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 274 PreInvPairs, 352 NumberOfFragments, 1857 HoareAnnotationTreeSize, 274 FomulaSimplifications, 7629 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 17 FomulaSimplificationsInter, 20109 FormulaSimplificationTreeSizeReductionInter, 8.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1710 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2750 ConstructedInterpolants, 0 QuantifiedInterpolants, 10357 SizeOfPredicates, 115 NumberOfNonLiveVariables, 3767 ConjunctsInSsa, 454 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 12208/13081 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((yy == y * y && c == x) && 1 <= y) && s * y + q * x == b) && b <= 2) && r == 0) && q == 0) && k == 0) && 1 <= x) && xy == x * y) && a == x) && r * y + p * x == a) && x <= 2) && s == 1) || (((((((((((a == c + b * k && y <= 2) && a == y) && b == x) && q == 1) && k == 0) && s == 0) && 1 <= x) && r == 1) && b < a) && xy == x * y) && r * y + p * x == a)) || (((((((((((a == c + b * k && p == 0) && y <= 2) && a == y) && s * y + q * x == b) && q == 1) && s == 0) && 1 <= x) && r == 1) && b < a) && xy == x * y) && b + c == a)) || (((((((((((((yy == y * y && 1 <= y) && s * y + q * x == b) && 0 <= c) && r == 0) && q == 0) && r * y + p * x == k * q * x + k * s * y + c) && 1 <= x) && xy == x * y) && a == x) && b + c <= 2) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((((a == c + b * k && p == 0) && y <= 2) && a == y) && 2 * b + c == a) && s * y + q * x == b) && q == 1) && s == 0) && 1 <= x) && r == 1) && b < a) && xy == x * y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((yy == y * y && s * y + q * x == b) && b <= 2) && 1 <= b) && 0 <= c) && r == 0) && q == 0) && 1 <= x) && xy == x * y) && a == x) && r * y + p * x == a) && 2 * c < 2) && x <= 2) && s == 1) || (((((((((0 <= b && y <= 2) && 1 <= y) && s * y + q * x == b) && 2 * b < 2) && 0 <= c) && 1 <= x) && r * y + p * x == a) && 2 * c < 2) && x <= 2)) || ((((((((((y <= 2 && a == y) && 1 <= c) && b == x) && q == 1) && s == 0) && 1 <= x) && r == 1) && xy == x * y) && b + c == a) && r * y + p * x == a) RESULT: Ultimate proved your program to be correct! [2022-07-12 04:43:01,346 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